{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# When Does The Brain Reach It's Peak In Art?\n",
    "\n",
    "\n",
    "## The Museum of Modern Art (MoMA) Collection\n",
    "\n",
    "The Museum of Modern Art (MoMA) acquired its first artworks in 1929, the year it was established. Today, the Museum’s evolving collection contains almost 200,000 works from around the world spanning the last 150 years.\n",
    "MoMA is committed to helping everyone understand, enjoy, and use it collection. The Museum’s website features 88,398 artworks from 26,422 artists. [This research dataset](https://github.com/MuseumofModernArt/collection/blob/master/Artworks.csv) contains 138,161 records, representing all of the works that have been accessioned into MoMA’s collection and cataloged in its database. It includes basic metadata for each work, including title, artist, date made, medium, dimensions, and date acquired by the Museum. At this time, the dataset is available in CSV format, encoded in `UTF-8`.\n",
    "\n",
    "Description of some of the MoMA's columns we are interested in:\n",
    "\n",
    "- `Title`: The title of the artwork.\n",
    "- `Artist`: The name of the artist who created the artwork.\n",
    "- `Nationality`: The nationality of the artist.\n",
    "- `BeginDate`: The year in which the artist was born.\n",
    "- `EndDate`: The year in which the artist died.\n",
    "- `Gender`: The gender of the artist.\n",
    "- `Date`: The date that the artwork was created.\n",
    "- `Department`: The department inside MoMA to which the artwork belongs.\n",
    "- `Medium`: Description of the artwork.\n",
    "- `Classification`: The kind of the artwork.\n",
    "\n",
    "\n",
    "## Introduction\n",
    "\n",
    "Scientists say that the human brain reaches its peak efficiency by the age of 30. For instance, you can read *Chapter 6* of [Behave: The Biology of Humans at Our Best and Worst](https://www.amazon.com/Behave-Biology-Humans-Best-Worst/dp/1594205078) by [Robert M. Sapolsky](https://en.wikipedia.org/wiki/Robert_Sapolsky).  \n",
    "\n",
    "We discovered the Moma dataset and wondered *if most of the artworks were actually created by artists in their 30s*.  \n",
    "\n",
    "We'll proceed from the assumption that, since the artworks have been preserved and included in the collection of the museum, they represent a valuable result of the human brain activity. \n",
    "\n",
    "We'll calculate the age when the artist created his work as the difference between the `Date` and the `BeginDate` columns.  \n",
    "Then we'll create a plot to see *at what age the most of the valuable artworks were created*.\n",
    "\n",
    "\n",
    "## Reading The MoMA Dataset\n",
    "\n",
    "Let's take a look at the data."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "display.width: 80\n",
      "display.width: 120\n"
     ]
    },
    {
     "data": {
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       "<div>\n",
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       "\n",
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       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Title</th>\n",
       "      <th>Artist</th>\n",
       "      <th>ConstituentID</th>\n",
       "      <th>ArtistBio</th>\n",
       "      <th>Nationality</th>\n",
       "      <th>BeginDate</th>\n",
       "      <th>EndDate</th>\n",
       "      <th>Gender</th>\n",
       "      <th>Date</th>\n",
       "      <th>Medium</th>\n",
       "      <th>...</th>\n",
       "      <th>ThumbnailURL</th>\n",
       "      <th>Circumference (cm)</th>\n",
       "      <th>Depth (cm)</th>\n",
       "      <th>Diameter (cm)</th>\n",
       "      <th>Height (cm)</th>\n",
       "      <th>Length (cm)</th>\n",
       "      <th>Weight (kg)</th>\n",
       "      <th>Width (cm)</th>\n",
       "      <th>Seat Height (cm)</th>\n",
       "      <th>Duration (sec.)</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>Ferdinandsbrücke Project, Vienna, Austria (Ele...</td>\n",
       "      <td>Otto Wagner</td>\n",
       "      <td>6210</td>\n",
       "      <td>(Austrian, 1841–1918)</td>\n",
       "      <td>(Austrian)</td>\n",
       "      <td>(1841)</td>\n",
       "      <td>(1918)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1896</td>\n",
       "      <td>Ink and cut-and-pasted painted pages on paper</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjU5NDA1Il0s...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>48.6000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>168.9000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>City of Music, National Superior Conservatory ...</td>\n",
       "      <td>Christian de Portzamparc</td>\n",
       "      <td>7470</td>\n",
       "      <td>(French, born 1944)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1944)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1987</td>\n",
       "      <td>Paint and colored pencil on print</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjk3Il0sWyJw...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>40.6401</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>29.8451</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>Villa near Vienna Project, Outside Vienna, Aus...</td>\n",
       "      <td>Emil Hoppe</td>\n",
       "      <td>7605</td>\n",
       "      <td>(Austrian, 1876–1957)</td>\n",
       "      <td>(Austrian)</td>\n",
       "      <td>(1876)</td>\n",
       "      <td>(1957)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1903</td>\n",
       "      <td>Graphite, pen, color pencil, ink, and gouache ...</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjk4Il0sWyJw...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>34.3000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>31.8000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>The Manhattan Transcripts Project, New York, N...</td>\n",
       "      <td>Bernard Tschumi</td>\n",
       "      <td>7056</td>\n",
       "      <td>(French and Swiss, born Switzerland 1944)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1944)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1980</td>\n",
       "      <td>Photographic reproduction with colored synthet...</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjEyNCJdLFsi...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>50.8000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>50.8000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>Villa, project, outside Vienna, Austria, Exter...</td>\n",
       "      <td>Emil Hoppe</td>\n",
       "      <td>7605</td>\n",
       "      <td>(Austrian, 1876–1957)</td>\n",
       "      <td>(Austrian)</td>\n",
       "      <td>(1876)</td>\n",
       "      <td>(1957)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1903</td>\n",
       "      <td>Graphite, color pencil, ink, and gouache on tr...</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjEyNiJdLFsi...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>38.4000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>19.1000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>5 rows × 29 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                               Title                    Artist ConstituentID  \\\n",
       "0  Ferdinandsbrücke Project, Vienna, Austria (Ele...               Otto Wagner          6210   \n",
       "1  City of Music, National Superior Conservatory ...  Christian de Portzamparc          7470   \n",
       "2  Villa near Vienna Project, Outside Vienna, Aus...                Emil Hoppe          7605   \n",
       "3  The Manhattan Transcripts Project, New York, N...           Bernard Tschumi          7056   \n",
       "4  Villa, project, outside Vienna, Austria, Exter...                Emil Hoppe          7605   \n",
       "\n",
       "                                   ArtistBio Nationality BeginDate EndDate  Gender  Date  \\\n",
       "0                      (Austrian, 1841–1918)  (Austrian)    (1841)  (1918)  (Male)  1896   \n",
       "1                        (French, born 1944)    (French)    (1944)     (0)  (Male)  1987   \n",
       "2                      (Austrian, 1876–1957)  (Austrian)    (1876)  (1957)  (Male)  1903   \n",
       "3  (French and Swiss, born Switzerland 1944)          ()    (1944)     (0)  (Male)  1980   \n",
       "4                      (Austrian, 1876–1957)  (Austrian)    (1876)  (1957)  (Male)  1903   \n",
       "\n",
       "                                              Medium  ...                                       ThumbnailURL  \\\n",
       "0      Ink and cut-and-pasted painted pages on paper  ...  http://www.moma.org/media/W1siZiIsIjU5NDA1Il0s...   \n",
       "1                  Paint and colored pencil on print  ...  http://www.moma.org/media/W1siZiIsIjk3Il0sWyJw...   \n",
       "2  Graphite, pen, color pencil, ink, and gouache ...  ...  http://www.moma.org/media/W1siZiIsIjk4Il0sWyJw...   \n",
       "3  Photographic reproduction with colored synthet...  ...  http://www.moma.org/media/W1siZiIsIjEyNCJdLFsi...   \n",
       "4  Graphite, color pencil, ink, and gouache on tr...  ...  http://www.moma.org/media/W1siZiIsIjEyNiJdLFsi...   \n",
       "\n",
       "  Circumference (cm) Depth (cm) Diameter (cm) Height (cm) Length (cm) Weight (kg)  Width (cm) Seat Height (cm)  \\\n",
       "0                NaN        NaN           NaN     48.6000         NaN         NaN    168.9000              NaN   \n",
       "1                NaN        NaN           NaN     40.6401         NaN         NaN     29.8451              NaN   \n",
       "2                NaN        NaN           NaN     34.3000         NaN         NaN     31.8000              NaN   \n",
       "3                NaN        NaN           NaN     50.8000         NaN         NaN     50.8000              NaN   \n",
       "4                NaN        NaN           NaN     38.4000         NaN         NaN     19.1000              NaN   \n",
       "\n",
       "  Duration (sec.)  \n",
       "0             NaN  \n",
       "1             NaN  \n",
       "2             NaN  \n",
       "3             NaN  \n",
       "4             NaN  \n",
       "\n",
       "[5 rows x 29 columns]"
      ]
     },
     "execution_count": 1,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Import libs\n",
    "from numpy import nan\n",
    "import pandas as pd\n",
    "import re\n",
    "\n",
    "# Set width of display\n",
    "print('display.width:', pd.get_option('display.width'))\n",
    "pd.set_option('display.width', 120)\n",
    "print('display.width:', pd.get_option('display.width'))\n",
    "\n",
    "# Get data\n",
    "moma = pd.read_csv('data/Artworks.csv')\n",
    "moma.head()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class 'pandas.core.frame.DataFrame'>\n",
      "RangeIndex: 138161 entries, 0 to 138160\n",
      "Data columns (total 29 columns):\n",
      " #   Column              Non-Null Count   Dtype  \n",
      "---  ------              --------------   -----  \n",
      " 0   Title               138122 non-null  object \n",
      " 1   Artist              136847 non-null  object \n",
      " 2   ConstituentID       136847 non-null  object \n",
      " 3   ArtistBio           132113 non-null  object \n",
      " 4   Nationality         136847 non-null  object \n",
      " 5   BeginDate           136847 non-null  object \n",
      " 6   EndDate             136847 non-null  object \n",
      " 7   Gender              136847 non-null  object \n",
      " 8   Date                135936 non-null  object \n",
      " 9   Medium              127923 non-null  object \n",
      " 10  Dimensions          128078 non-null  object \n",
      " 11  CreditLine          135629 non-null  object \n",
      " 12  AccessionNumber     138161 non-null  object \n",
      " 13  Classification      138161 non-null  object \n",
      " 14  Department          138161 non-null  object \n",
      " 15  DateAcquired        131029 non-null  object \n",
      " 16  Cataloged           138161 non-null  object \n",
      " 17  ObjectID            138161 non-null  int64  \n",
      " 18  URL                 85925 non-null   object \n",
      " 19  ThumbnailURL        75283 non-null   object \n",
      " 20  Circumference (cm)  10 non-null      float64\n",
      " 21  Depth (cm)          13791 non-null   float64\n",
      " 22  Diameter (cm)       1468 non-null    float64\n",
      " 23  Height (cm)         120027 non-null  float64\n",
      " 24  Length (cm)         741 non-null     float64\n",
      " 25  Weight (kg)         289 non-null     float64\n",
      " 26  Width (cm)          119105 non-null  float64\n",
      " 27  Seat Height (cm)    0 non-null       float64\n",
      " 28  Duration (sec.)     2233 non-null    float64\n",
      "dtypes: float64(9), int64(1), object(19)\n",
      "memory usage: 30.6+ MB\n"
     ]
    }
   ],
   "source": [
    "moma.info()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We see 138,161 artworks. Almost all of the columns contain `null` values.\n",
    "\n",
    "\n",
    "## Exploring The Data\n",
    "\n",
    "Now, we'll overview the `NaN` values in the data."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>nan_count</th>\n",
       "      <th>nan_percentage</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>Title</th>\n",
       "      <td>39</td>\n",
       "      <td>0.028228</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>Artist</th>\n",
       "      <td>1314</td>\n",
       "      <td>0.951064</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>ArtistBio</th>\n",
       "      <td>6048</td>\n",
       "      <td>4.377502</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>Nationality</th>\n",
       "      <td>1314</td>\n",
       "      <td>0.951064</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>BeginDate</th>\n",
       "      <td>1314</td>\n",
       "      <td>0.951064</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>EndDate</th>\n",
       "      <td>1314</td>\n",
       "      <td>0.951064</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>Gender</th>\n",
       "      <td>1314</td>\n",
       "      <td>0.951064</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>Date</th>\n",
       "      <td>2225</td>\n",
       "      <td>1.610440</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>Department</th>\n",
       "      <td>0</td>\n",
       "      <td>0.000000</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "             nan_count  nan_percentage\n",
       "Title               39        0.028228\n",
       "Artist            1314        0.951064\n",
       "ArtistBio         6048        4.377502\n",
       "Nationality       1314        0.951064\n",
       "BeginDate         1314        0.951064\n",
       "EndDate           1314        0.951064\n",
       "Gender            1314        0.951064\n",
       "Date              2225        1.610440\n",
       "Department           0        0.000000"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Number of null values per column\n",
    "moma_nan_cnt = moma[['Title', 'Artist', 'ArtistBio', 'Nationality', 'BeginDate', 'EndDate',\n",
    "                     'Gender', 'Date', 'Department']].isnull().sum()\n",
    "\n",
    "# Percentage of null values\n",
    "moma_nan_pct = moma_nan_cnt / moma.shape[0] * 100\n",
    "\n",
    "moma_nan = pd.DataFrame({'nan_count': moma_nan_cnt, 'nan_percentage': moma_nan_pct})\n",
    "moma_nan"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "It looks like there is no artist defined for 1314 (0.95%) artworks (`Artist`, `Nationality`, `BeginDate`, `EndDate`, `Gender` columns). The important column `Date` contains 1.6% empty values.\n",
    "\n",
    "Let's find duplicate artworks in the dataset using the unique identifier of the object `ObjectID`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Duplicated: 0\n"
     ]
    }
   ],
   "source": [
    "# Duplicated\n",
    "print('Duplicated: {}'.format(moma.duplicated(subset='ObjectID').sum()))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Fortunately, there are no duplicates!\n",
    "\n",
    "Let's inspect **the `ArtistBio` column**."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Title</th>\n",
       "      <th>Artist</th>\n",
       "      <th>ConstituentID</th>\n",
       "      <th>ArtistBio</th>\n",
       "      <th>Nationality</th>\n",
       "      <th>BeginDate</th>\n",
       "      <th>EndDate</th>\n",
       "      <th>Gender</th>\n",
       "      <th>Date</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>151</th>\n",
       "      <td>Slow House Project, North Haven, New York, Pla...</td>\n",
       "      <td>Diller + Scofidio, Elizabeth Diller, Ricardo S...</td>\n",
       "      <td>8707, 6951, 6952</td>\n",
       "      <td>(American, established 1979) (American, born P...</td>\n",
       "      <td>(American) (American) (American)</td>\n",
       "      <td>(1979) (1954) (1935)</td>\n",
       "      <td>(0) (0) (0)</td>\n",
       "      <td>() (Female) (Male)</td>\n",
       "      <td>1989</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>160</th>\n",
       "      <td>City Hall, project, North Canton, Ohio, Perspe...</td>\n",
       "      <td>Venturi and Rauch, Robert Venturi, John Rauch</td>\n",
       "      <td>8213, 6132, 8214</td>\n",
       "      <td>(American, est. 1964–1979) (American, 1925–201...</td>\n",
       "      <td>(American) (American) (American)</td>\n",
       "      <td>(1964) (1925) (1930)</td>\n",
       "      <td>(1979) (2018) (0)</td>\n",
       "      <td>() (Male) (Male)</td>\n",
       "      <td>1965</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>161</th>\n",
       "      <td>House, Northern Delaware, Preliminary study of...</td>\n",
       "      <td>Venturi and Rauch, Robert Venturi, John Rauch,...</td>\n",
       "      <td>8213, 6132, 8214, 8216</td>\n",
       "      <td>(American, est. 1964–1979) (American, 1925–201...</td>\n",
       "      <td>(American) (American) (American) (American)</td>\n",
       "      <td>(1964) (1925) (1930) (1931)</td>\n",
       "      <td>(1979) (2018) (0) (0)</td>\n",
       "      <td>() (Male) (Male) (Female)</td>\n",
       "      <td>1978</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>162</th>\n",
       "      <td>Gordon Wu Hall, Princeton University, Princeto...</td>\n",
       "      <td>Venturi, Rauch and Scott Brown, Robert Venturi...</td>\n",
       "      <td>8215, 6132, 8214, 8216</td>\n",
       "      <td>(American, established 1980) (American, 1925–2...</td>\n",
       "      <td>(American) (American) (American) (American)</td>\n",
       "      <td>(1980) (1925) (1930) (1931)</td>\n",
       "      <td>(0) (2018) (0) (0)</td>\n",
       "      <td>() (Male) (Male) (Female)</td>\n",
       "      <td>1981</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>163</th>\n",
       "      <td>Gordon Wu Hall, Princeton University, Princeto...</td>\n",
       "      <td>Venturi, Rauch and Scott Brown, Robert Venturi...</td>\n",
       "      <td>8215, 6132, 8214, 8216</td>\n",
       "      <td>(American, established 1980) (American, 1925–2...</td>\n",
       "      <td>(American) (American) (American) (American)</td>\n",
       "      <td>(1980) (1925) (1930) (1931)</td>\n",
       "      <td>(0) (2018) (0) (0)</td>\n",
       "      <td>() (Male) (Male) (Female)</td>\n",
       "      <td>1981</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>164</th>\n",
       "      <td>Lewis Thomas Laboratory for Molecular Biology,...</td>\n",
       "      <td>Venturi, Rauch and Scott Brown, Robert Venturi...</td>\n",
       "      <td>8215, 6132, 8214, 8216</td>\n",
       "      <td>(American, established 1980) (American, 1925–2...</td>\n",
       "      <td>(American) (American) (American) (American)</td>\n",
       "      <td>(1980) (1925) (1930) (1931)</td>\n",
       "      <td>(0) (2018) (0) (0)</td>\n",
       "      <td>() (Male) (Male) (Female)</td>\n",
       "      <td>1983</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>241</th>\n",
       "      <td>Sixth Street House project, Santa Monica, CA (...</td>\n",
       "      <td>Morphosis, Santa Monica, CA, Thom Mayne, Andre...</td>\n",
       "      <td>29711, 8218, 22884</td>\n",
       "      <td>(founded 1972) (American, born 1944) (American...</td>\n",
       "      <td>() (American) (American)</td>\n",
       "      <td>(1972) (1944) (1958)</td>\n",
       "      <td>(0) (0) (0)</td>\n",
       "      <td>() (Male) (Male)</td>\n",
       "      <td>1990</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>368</th>\n",
       "      <td>Slow House Project, North Haven, Long Island, ...</td>\n",
       "      <td>Diller + Scofidio, Elizabeth Diller, Ricardo S...</td>\n",
       "      <td>8707, 6951, 6952</td>\n",
       "      <td>(American, established 1979) (American, born P...</td>\n",
       "      <td>(American) (American) (American)</td>\n",
       "      <td>(1979) (1954) (1935)</td>\n",
       "      <td>(0) (0) (0)</td>\n",
       "      <td>() (Female) (Male)</td>\n",
       "      <td>1991</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>450</th>\n",
       "      <td>Eclectic House Facade, project</td>\n",
       "      <td>Venturi and Rauch, John Rauch, Robert Venturi</td>\n",
       "      <td>8213, 8214, 6132</td>\n",
       "      <td>(American, est. 1964–1979) (American, born 193...</td>\n",
       "      <td>(American) (American) (American)</td>\n",
       "      <td>(1964) (1930) (1925)</td>\n",
       "      <td>(1979) (0) (2018)</td>\n",
       "      <td>() (Male) (Male)</td>\n",
       "      <td>1977</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>582</th>\n",
       "      <td>Charrette Submission for The Museum of Modern ...</td>\n",
       "      <td>Herzog &amp; de Meuron, Basel, Jacques Herzog, Pie...</td>\n",
       "      <td>7567, 7421, 7422</td>\n",
       "      <td>(est. 1978) (Swiss, born 1950) (Swiss, born 1950)</td>\n",
       "      <td>(Swiss) (Swiss) (Swiss)</td>\n",
       "      <td>(1978) (1950) (1950)</td>\n",
       "      <td>(0) (0) (0)</td>\n",
       "      <td>() (Male) (Male)</td>\n",
       "      <td>1997</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>584</th>\n",
       "      <td>National Commercial Bank, Jeddah, Saudi Arabia...</td>\n",
       "      <td>Skidmore Owings &amp; Merrill, Gordon Bunshaft</td>\n",
       "      <td>5518, 8170</td>\n",
       "      <td>(American, founded 1936) (American, 1909–1990)</td>\n",
       "      <td>(American) (American)</td>\n",
       "      <td>(1936) (1909)</td>\n",
       "      <td>(0) (1990)</td>\n",
       "      <td>() (Male)</td>\n",
       "      <td>1977</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>586</th>\n",
       "      <td>National Commercial Bank, Jeddah, Saudi Arabia...</td>\n",
       "      <td>Skidmore Owings &amp; Merrill, Gordon Bunshaft</td>\n",
       "      <td>5518, 8170</td>\n",
       "      <td>(American, founded 1936) (American, 1909–1990)</td>\n",
       "      <td>(American) (American)</td>\n",
       "      <td>(1936) (1909)</td>\n",
       "      <td>(0) (1990)</td>\n",
       "      <td>() (Male)</td>\n",
       "      <td>1977</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>588</th>\n",
       "      <td>National Commercial Bank, Jeddah, Saudi Arabia...</td>\n",
       "      <td>Skidmore Owings &amp; Merrill, Gordon Bunshaft</td>\n",
       "      <td>5518, 8170</td>\n",
       "      <td>(American, founded 1936) (American, 1909–1990)</td>\n",
       "      <td>(American) (American)</td>\n",
       "      <td>(1936) (1909)</td>\n",
       "      <td>(0) (1990)</td>\n",
       "      <td>() (Male)</td>\n",
       "      <td>1977</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>590</th>\n",
       "      <td>National Commercial Bank, Jeddah, Saudi Arabia...</td>\n",
       "      <td>Skidmore Owings &amp; Merrill, Gordon Bunshaft</td>\n",
       "      <td>5518, 8170</td>\n",
       "      <td>(American, founded 1936) (American, 1909–1990)</td>\n",
       "      <td>(American) (American)</td>\n",
       "      <td>(1936) (1909)</td>\n",
       "      <td>(0) (1990)</td>\n",
       "      <td>() (Male)</td>\n",
       "      <td>1977</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>591</th>\n",
       "      <td>Charrette Submission for The Museum of Modern ...</td>\n",
       "      <td>Dominique Perrault Architecture, Paris, Domini...</td>\n",
       "      <td>8053, 8052</td>\n",
       "      <td>(founded 1981) (French, born 1953)</td>\n",
       "      <td>(French) (French)</td>\n",
       "      <td>(1981) (1953)</td>\n",
       "      <td>(0) (0)</td>\n",
       "      <td>() (Male)</td>\n",
       "      <td>1997</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                 Title                                             Artist  \\\n",
       "151  Slow House Project, North Haven, New York, Pla...  Diller + Scofidio, Elizabeth Diller, Ricardo S...   \n",
       "160  City Hall, project, North Canton, Ohio, Perspe...      Venturi and Rauch, Robert Venturi, John Rauch   \n",
       "161  House, Northern Delaware, Preliminary study of...  Venturi and Rauch, Robert Venturi, John Rauch,...   \n",
       "162  Gordon Wu Hall, Princeton University, Princeto...  Venturi, Rauch and Scott Brown, Robert Venturi...   \n",
       "163  Gordon Wu Hall, Princeton University, Princeto...  Venturi, Rauch and Scott Brown, Robert Venturi...   \n",
       "164  Lewis Thomas Laboratory for Molecular Biology,...  Venturi, Rauch and Scott Brown, Robert Venturi...   \n",
       "241  Sixth Street House project, Santa Monica, CA (...  Morphosis, Santa Monica, CA, Thom Mayne, Andre...   \n",
       "368  Slow House Project, North Haven, Long Island, ...  Diller + Scofidio, Elizabeth Diller, Ricardo S...   \n",
       "450                     Eclectic House Facade, project      Venturi and Rauch, John Rauch, Robert Venturi   \n",
       "582  Charrette Submission for The Museum of Modern ...  Herzog & de Meuron, Basel, Jacques Herzog, Pie...   \n",
       "584  National Commercial Bank, Jeddah, Saudi Arabia...         Skidmore Owings & Merrill, Gordon Bunshaft   \n",
       "586  National Commercial Bank, Jeddah, Saudi Arabia...         Skidmore Owings & Merrill, Gordon Bunshaft   \n",
       "588  National Commercial Bank, Jeddah, Saudi Arabia...         Skidmore Owings & Merrill, Gordon Bunshaft   \n",
       "590  National Commercial Bank, Jeddah, Saudi Arabia...         Skidmore Owings & Merrill, Gordon Bunshaft   \n",
       "591  Charrette Submission for The Museum of Modern ...  Dominique Perrault Architecture, Paris, Domini...   \n",
       "\n",
       "              ConstituentID                                          ArtistBio  \\\n",
       "151        8707, 6951, 6952  (American, established 1979) (American, born P...   \n",
       "160        8213, 6132, 8214  (American, est. 1964–1979) (American, 1925–201...   \n",
       "161  8213, 6132, 8214, 8216  (American, est. 1964–1979) (American, 1925–201...   \n",
       "162  8215, 6132, 8214, 8216  (American, established 1980) (American, 1925–2...   \n",
       "163  8215, 6132, 8214, 8216  (American, established 1980) (American, 1925–2...   \n",
       "164  8215, 6132, 8214, 8216  (American, established 1980) (American, 1925–2...   \n",
       "241      29711, 8218, 22884  (founded 1972) (American, born 1944) (American...   \n",
       "368        8707, 6951, 6952  (American, established 1979) (American, born P...   \n",
       "450        8213, 8214, 6132  (American, est. 1964–1979) (American, born 193...   \n",
       "582        7567, 7421, 7422  (est. 1978) (Swiss, born 1950) (Swiss, born 1950)   \n",
       "584              5518, 8170     (American, founded 1936) (American, 1909–1990)   \n",
       "586              5518, 8170     (American, founded 1936) (American, 1909–1990)   \n",
       "588              5518, 8170     (American, founded 1936) (American, 1909–1990)   \n",
       "590              5518, 8170     (American, founded 1936) (American, 1909–1990)   \n",
       "591              8053, 8052                 (founded 1981) (French, born 1953)   \n",
       "\n",
       "                                     Nationality                    BeginDate                EndDate  \\\n",
       "151             (American) (American) (American)         (1979) (1954) (1935)            (0) (0) (0)   \n",
       "160             (American) (American) (American)         (1964) (1925) (1930)      (1979) (2018) (0)   \n",
       "161  (American) (American) (American) (American)  (1964) (1925) (1930) (1931)  (1979) (2018) (0) (0)   \n",
       "162  (American) (American) (American) (American)  (1980) (1925) (1930) (1931)     (0) (2018) (0) (0)   \n",
       "163  (American) (American) (American) (American)  (1980) (1925) (1930) (1931)     (0) (2018) (0) (0)   \n",
       "164  (American) (American) (American) (American)  (1980) (1925) (1930) (1931)     (0) (2018) (0) (0)   \n",
       "241                     () (American) (American)         (1972) (1944) (1958)            (0) (0) (0)   \n",
       "368             (American) (American) (American)         (1979) (1954) (1935)            (0) (0) (0)   \n",
       "450             (American) (American) (American)         (1964) (1930) (1925)      (1979) (0) (2018)   \n",
       "582                      (Swiss) (Swiss) (Swiss)         (1978) (1950) (1950)            (0) (0) (0)   \n",
       "584                        (American) (American)                (1936) (1909)             (0) (1990)   \n",
       "586                        (American) (American)                (1936) (1909)             (0) (1990)   \n",
       "588                        (American) (American)                (1936) (1909)             (0) (1990)   \n",
       "590                        (American) (American)                (1936) (1909)             (0) (1990)   \n",
       "591                            (French) (French)                (1981) (1953)                (0) (0)   \n",
       "\n",
       "                        Gender  Date  \n",
       "151         () (Female) (Male)  1989  \n",
       "160           () (Male) (Male)  1965  \n",
       "161  () (Male) (Male) (Female)  1978  \n",
       "162  () (Male) (Male) (Female)  1981  \n",
       "163  () (Male) (Male) (Female)  1981  \n",
       "164  () (Male) (Male) (Female)  1983  \n",
       "241           () (Male) (Male)  1990  \n",
       "368         () (Female) (Male)  1991  \n",
       "450           () (Male) (Male)  1977  \n",
       "582           () (Male) (Male)  1997  \n",
       "584                  () (Male)  1977  \n",
       "586                  () (Male)  1977  \n",
       "588                  () (Male)  1977  \n",
       "590                  () (Male)  1977  \n",
       "591                  () (Male)  1997  "
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "artist_bio_pattern_org = r'(?:founded|established|est\\.|active|formed)'\n",
    "\n",
    "# Value examples\n",
    "moma.loc[((moma['ArtistBio'].notnull())\n",
    "          & (moma['ArtistBio'].str.contains(artist_bio_pattern_org, flags=re.I))\n",
    "         ),\n",
    "         ['Title', 'Artist', 'ConstituentID', 'ArtistBio',\n",
    "          'Nationality', 'BeginDate', 'EndDate', 'Gender', 'Date'\n",
    "         ]\n",
    "        ].head(15)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Let's inspect **the `Gender` column**."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(Male)                    104121\n",
       "(Female)                   17728\n",
       "()                          7403\n",
       "(Male) (Male)               1771\n",
       "NaN                         1314\n",
       "(Male) (Male) (Male)         885\n",
       "(Male) ()                    819\n",
       "(Male) (Female)              731\n",
       "() (Male)                    520\n",
       "(Female) (Male)              489\n",
       "(Female) (Female)            172\n",
       "() ()                        146\n",
       "(Female) (Male) (Male)       110\n",
       "() (Male) (Female)           106\n",
       "() (Male) (Male)              97\n",
       "Name: Gender, dtype: int64"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Value examples\n",
    "moma['Gender'].value_counts(dropna=False).head(15)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The `Gender` column can contain the following:\n",
    "\n",
    "- `Male`\n",
    "- `Female`\n",
    "- empty value\n",
    "- combinations of the values above\n",
    "\n",
    "Let's look at the last case."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Title</th>\n",
       "      <th>Artist</th>\n",
       "      <th>ConstituentID</th>\n",
       "      <th>ArtistBio</th>\n",
       "      <th>Nationality</th>\n",
       "      <th>BeginDate</th>\n",
       "      <th>EndDate</th>\n",
       "      <th>Gender</th>\n",
       "      <th>Date</th>\n",
       "      <th>Medium</th>\n",
       "      <th>...</th>\n",
       "      <th>ThumbnailURL</th>\n",
       "      <th>Circumference (cm)</th>\n",
       "      <th>Depth (cm)</th>\n",
       "      <th>Diameter (cm)</th>\n",
       "      <th>Height (cm)</th>\n",
       "      <th>Length (cm)</th>\n",
       "      <th>Weight (kg)</th>\n",
       "      <th>Width (cm)</th>\n",
       "      <th>Seat Height (cm)</th>\n",
       "      <th>Duration (sec.)</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>65</th>\n",
       "      <td>House IV Project, Falls Village, Connecticut (...</td>\n",
       "      <td>Peter Eisenman, Robert Cole</td>\n",
       "      <td>6969, 8134</td>\n",
       "      <td>(American, born 1932)</td>\n",
       "      <td>(American) ()</td>\n",
       "      <td>(1932) (0)</td>\n",
       "      <td>(0) (0)</td>\n",
       "      <td>(Male) (Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Ink and color ink on frosted polymer sheet</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjIxMDA0MSJd...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>34.9251</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>113.3477</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>66</th>\n",
       "      <td>Villa dall'Ava, Paris (Saint-Cloud), France, E...</td>\n",
       "      <td>Rem Koolhaas, Madelon Vriesendorp</td>\n",
       "      <td>6956, 6957</td>\n",
       "      <td>(Dutch, born 1944) (Dutch, born 1945)</td>\n",
       "      <td>(Dutch) (Dutch)</td>\n",
       "      <td>(1944) (1945)</td>\n",
       "      <td>(0) (0)</td>\n",
       "      <td>(Male) (Female)</td>\n",
       "      <td>1987</td>\n",
       "      <td>Synthetic polymer paint and ink on paper</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjYwMTEyIl0s...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>63.5001</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>99.0602</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>76</th>\n",
       "      <td>Regional Administrative Center, project \"Tries...</td>\n",
       "      <td>Aldo Rossi, Gianni Braghieri, M. Bosshard</td>\n",
       "      <td>7661, 8131, 8180</td>\n",
       "      <td>(Italian, 1931–1997) (Italian, born 1945) (Ita...</td>\n",
       "      <td>(Italian) (Italian) (Italian)</td>\n",
       "      <td>(1931) (1945) (0)</td>\n",
       "      <td>(1997) (0) (0)</td>\n",
       "      <td>(Male) (Male) (Male)</td>\n",
       "      <td>1974</td>\n",
       "      <td>Rubbed ink and pastel on whiteprint</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjY5MSJdLFsi...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>72.4000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>91.4000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107</th>\n",
       "      <td>Woodland Crematorium, Woodland Cemetery, Stock...</td>\n",
       "      <td>Erik Gunnar Asplund, Sigurd Lewerentz</td>\n",
       "      <td>27, 24452</td>\n",
       "      <td>(Swedish, 1885–1940) (Swedish)</td>\n",
       "      <td>(Swedish) (Swedish)</td>\n",
       "      <td>(1885) (0)</td>\n",
       "      <td>(1940) (0)</td>\n",
       "      <td>(Male) (Male)</td>\n",
       "      <td>1937</td>\n",
       "      <td>Graphite on tracing paper</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjEyNjUiXSxb...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>41.3000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>96.2000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>110</th>\n",
       "      <td>Palais de la Découverte Project, Paris, France...</td>\n",
       "      <td>Paul Nelson, Frantz Jourdain, Oscar Nitzchke</td>\n",
       "      <td>8102, 6703, 4312</td>\n",
       "      <td>(American, 1895–1979) (French, 1847–1935) (Ame...</td>\n",
       "      <td>(American) (French) (American)</td>\n",
       "      <td>(1895) (1847) (1900)</td>\n",
       "      <td>(1979) (1935) (1991)</td>\n",
       "      <td>(Male) (Male) (Male)</td>\n",
       "      <td>1938</td>\n",
       "      <td>Ink and color pencil on paper mounted on board</td>\n",
       "      <td>...</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjEzMjMiXSxb...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1.3</td>\n",
       "      <td>NaN</td>\n",
       "      <td>37.5000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>95.3000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137981</th>\n",
       "      <td>Algae Geographies cup</td>\n",
       "      <td>Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...</td>\n",
       "      <td>131930, 132165, 132166, 132113</td>\n",
       "      <td>(est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...</td>\n",
       "      <td>() (Dutch) (Dutch) (Dutch)</td>\n",
       "      <td>(2016) (1978) (0) (2014)</td>\n",
       "      <td>(0) (0) (0) (0)</td>\n",
       "      <td>() (Male) (Female) ()</td>\n",
       "      <td>2019</td>\n",
       "      <td>Microalgae and sugar-based biopolymer</td>\n",
       "      <td>...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137982</th>\n",
       "      <td>Algae Geographies cup</td>\n",
       "      <td>Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...</td>\n",
       "      <td>131930, 132165, 132166, 132113</td>\n",
       "      <td>(est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...</td>\n",
       "      <td>() (Dutch) (Dutch) (Dutch)</td>\n",
       "      <td>(2016) (1978) (0) (2014)</td>\n",
       "      <td>(0) (0) (0) (0)</td>\n",
       "      <td>() (Male) (Female) ()</td>\n",
       "      <td>2019</td>\n",
       "      <td>Microalgae and sugar-based biopolymer</td>\n",
       "      <td>...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137983</th>\n",
       "      <td>Algae Geographies cup</td>\n",
       "      <td>Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...</td>\n",
       "      <td>131930, 132165, 132166, 132113</td>\n",
       "      <td>(est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...</td>\n",
       "      <td>() (Dutch) (Dutch) (Dutch)</td>\n",
       "      <td>(2016) (1978) (0) (2014)</td>\n",
       "      <td>(0) (0) (0) (0)</td>\n",
       "      <td>() (Male) (Female) ()</td>\n",
       "      <td>2019</td>\n",
       "      <td>Microalgae and sugar-based biopolymer</td>\n",
       "      <td>...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137984</th>\n",
       "      <td>Algae Geographies cup</td>\n",
       "      <td>Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...</td>\n",
       "      <td>131930, 132165, 132166, 132113</td>\n",
       "      <td>(est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...</td>\n",
       "      <td>() (Dutch) (Dutch) (Dutch)</td>\n",
       "      <td>(2016) (1978) (0) (2014)</td>\n",
       "      <td>(0) (0) (0) (0)</td>\n",
       "      <td>() (Male) (Female) ()</td>\n",
       "      <td>2019</td>\n",
       "      <td>Microalgae and sugar-based biopolymer</td>\n",
       "      <td>...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137985</th>\n",
       "      <td>Algae Geographies cup</td>\n",
       "      <td>Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...</td>\n",
       "      <td>131930, 132165, 132166, 132113</td>\n",
       "      <td>(est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...</td>\n",
       "      <td>() (Dutch) (Dutch) (Dutch)</td>\n",
       "      <td>(2016) (1978) (0) (2014)</td>\n",
       "      <td>(0) (0) (0) (0)</td>\n",
       "      <td>() (Male) (Female) ()</td>\n",
       "      <td>2019</td>\n",
       "      <td>Microalgae and sugar-based biopolymer</td>\n",
       "      <td>...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>7.0000</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>7554 rows × 29 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    Title                                             Artist  \\\n",
       "65      House IV Project, Falls Village, Connecticut (...                        Peter Eisenman, Robert Cole   \n",
       "66      Villa dall'Ava, Paris (Saint-Cloud), France, E...                  Rem Koolhaas, Madelon Vriesendorp   \n",
       "76      Regional Administrative Center, project \"Tries...          Aldo Rossi, Gianni Braghieri, M. Bosshard   \n",
       "107     Woodland Crematorium, Woodland Cemetery, Stock...              Erik Gunnar Asplund, Sigurd Lewerentz   \n",
       "110     Palais de la Découverte Project, Paris, France...       Paul Nelson, Frantz Jourdain, Oscar Nitzchke   \n",
       "...                                                   ...                                                ...   \n",
       "137981                              Algae Geographies cup  Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...   \n",
       "137982                              Algae Geographies cup  Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...   \n",
       "137983                              Algae Geographies cup  Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...   \n",
       "137984                              Algae Geographies cup  Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...   \n",
       "137985                              Algae Geographies cup  Atelier Luma/ Luma Arles, Eric Klarenbeek, Maa...   \n",
       "\n",
       "                         ConstituentID                                          ArtistBio  \\\n",
       "65                          6969, 8134                              (American, born 1932)   \n",
       "66                          6956, 6957              (Dutch, born 1944) (Dutch, born 1945)   \n",
       "76                    7661, 8131, 8180  (Italian, 1931–1997) (Italian, born 1945) (Ita...   \n",
       "107                          27, 24452                     (Swedish, 1885–1940) (Swedish)   \n",
       "110                   8102, 6703, 4312  (American, 1895–1979) (French, 1847–1935) (Ame...   \n",
       "...                                ...                                                ...   \n",
       "137981  131930, 132165, 132166, 132113  (est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...   \n",
       "137982  131930, 132165, 132166, 132113  (est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...   \n",
       "137983  131930, 132165, 132166, 132113  (est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...   \n",
       "137984  131930, 132165, 132166, 132113  (est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...   \n",
       "137985  131930, 132165, 132166, 132113  (est. 2016) (Dutch, born 1978) (Dutch) (Dutch,...   \n",
       "\n",
       "                           Nationality                 BeginDate               EndDate                 Gender  Date  \\\n",
       "65                       (American) ()                (1932) (0)               (0) (0)          (Male) (Male)  1975   \n",
       "66                     (Dutch) (Dutch)             (1944) (1945)               (0) (0)        (Male) (Female)  1987   \n",
       "76       (Italian) (Italian) (Italian)         (1931) (1945) (0)        (1997) (0) (0)   (Male) (Male) (Male)  1974   \n",
       "107                (Swedish) (Swedish)                (1885) (0)            (1940) (0)          (Male) (Male)  1937   \n",
       "110     (American) (French) (American)      (1895) (1847) (1900)  (1979) (1935) (1991)   (Male) (Male) (Male)  1938   \n",
       "...                                ...                       ...                   ...                    ...   ...   \n",
       "137981      () (Dutch) (Dutch) (Dutch)  (2016) (1978) (0) (2014)       (0) (0) (0) (0)  () (Male) (Female) ()  2019   \n",
       "137982      () (Dutch) (Dutch) (Dutch)  (2016) (1978) (0) (2014)       (0) (0) (0) (0)  () (Male) (Female) ()  2019   \n",
       "137983      () (Dutch) (Dutch) (Dutch)  (2016) (1978) (0) (2014)       (0) (0) (0) (0)  () (Male) (Female) ()  2019   \n",
       "137984      () (Dutch) (Dutch) (Dutch)  (2016) (1978) (0) (2014)       (0) (0) (0) (0)  () (Male) (Female) ()  2019   \n",
       "137985      () (Dutch) (Dutch) (Dutch)  (2016) (1978) (0) (2014)       (0) (0) (0) (0)  () (Male) (Female) ()  2019   \n",
       "\n",
       "                                                Medium  ...                                       ThumbnailURL  \\\n",
       "65          Ink and color ink on frosted polymer sheet  ...  http://www.moma.org/media/W1siZiIsIjIxMDA0MSJd...   \n",
       "66            Synthetic polymer paint and ink on paper  ...  http://www.moma.org/media/W1siZiIsIjYwMTEyIl0s...   \n",
       "76                 Rubbed ink and pastel on whiteprint  ...  http://www.moma.org/media/W1siZiIsIjY5MSJdLFsi...   \n",
       "107                          Graphite on tracing paper  ...  http://www.moma.org/media/W1siZiIsIjEyNjUiXSxb...   \n",
       "110     Ink and color pencil on paper mounted on board  ...  http://www.moma.org/media/W1siZiIsIjEzMjMiXSxb...   \n",
       "...                                                ...  ...                                                ...   \n",
       "137981           Microalgae and sugar-based biopolymer  ...                                                NaN   \n",
       "137982           Microalgae and sugar-based biopolymer  ...                                                NaN   \n",
       "137983           Microalgae and sugar-based biopolymer  ...                                                NaN   \n",
       "137984           Microalgae and sugar-based biopolymer  ...                                                NaN   \n",
       "137985           Microalgae and sugar-based biopolymer  ...                                                NaN   \n",
       "\n",
       "       Circumference (cm) Depth (cm) Diameter (cm) Height (cm) Length (cm) Weight (kg)  Width (cm) Seat Height (cm)  \\\n",
       "65                    NaN        NaN           NaN     34.9251         NaN         NaN    113.3477              NaN   \n",
       "66                    NaN        NaN           NaN     63.5001         NaN         NaN     99.0602              NaN   \n",
       "76                    NaN        NaN           NaN     72.4000         NaN         NaN     91.4000              NaN   \n",
       "107                   NaN        NaN           NaN     41.3000         NaN         NaN     96.2000              NaN   \n",
       "110                   NaN        1.3           NaN     37.5000         NaN         NaN     95.3000              NaN   \n",
       "...                   ...        ...           ...         ...         ...         ...         ...              ...   \n",
       "137981                NaN        7.0           NaN      7.0000         NaN         NaN      7.0000              NaN   \n",
       "137982                NaN        7.0           NaN      7.0000         NaN         NaN      7.0000              NaN   \n",
       "137983                NaN        7.0           NaN      7.0000         NaN         NaN      7.0000              NaN   \n",
       "137984                NaN        7.0           NaN      7.0000         NaN         NaN      7.0000              NaN   \n",
       "137985                NaN        7.0           NaN      7.0000         NaN         NaN      7.0000              NaN   \n",
       "\n",
       "       Duration (sec.)  \n",
       "65                 NaN  \n",
       "66                 NaN  \n",
       "76                 NaN  \n",
       "107                NaN  \n",
       "110                NaN  \n",
       "...                ...  \n",
       "137981             NaN  \n",
       "137982             NaN  \n",
       "137983             NaN  \n",
       "137984             NaN  \n",
       "137985             NaN  \n",
       "\n",
       "[7554 rows x 29 columns]"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "gender_pattern_arr = r'(?:\\((?:male|female)?\\))'\n",
    "\n",
    "# Value examples\n",
    "moma.loc[((moma['Gender'].notnull())\n",
    "          & (moma['Gender'].str.count(gender_pattern_arr, flags=re.I) > 1)\n",
    "         )\n",
    "        ]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "By exploring the columns `Gender` and `ArtistBio` above, we have found that the artist can be represented by a company, a collective of artists, an association of a company and artists.\n",
    "  \n",
    "There is no clear indication in the data to check whether the artist is an individual or a team.  \n",
    "We could identify the teams by the missing value in the `Gender` column.  \n",
    "However, gender can also be specified for the team. Below is an example of such data:\n",
    "\n",
    "- `Robin Schwartz` is a photographer,\n",
    "- `General Idea` is a collective of three Canadian artists,\n",
    "- `Hi Red Center` is a short-lived radical art collective."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
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       "\n",
       "    .dataframe tbody tr th {\n",
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       "    }\n",
       "\n",
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       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Title</th>\n",
       "      <th>Artist</th>\n",
       "      <th>ConstituentID</th>\n",
       "      <th>ArtistBio</th>\n",
       "      <th>Nationality</th>\n",
       "      <th>BeginDate</th>\n",
       "      <th>EndDate</th>\n",
       "      <th>Gender</th>\n",
       "      <th>Date</th>\n",
       "      <th>Medium</th>\n",
       "      <th>Dimensions</th>\n",
       "      <th>CreditLine</th>\n",
       "      <th>AccessionNumber</th>\n",
       "      <th>Classification</th>\n",
       "      <th>Department</th>\n",
       "      <th>DateAcquired</th>\n",
       "      <th>Cataloged</th>\n",
       "      <th>ObjectID</th>\n",
       "      <th>URL</th>\n",
       "      <th>ThumbnailURL</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>101220</th>\n",
       "      <td>News Flash! What Is the Communication Satellit...</td>\n",
       "      <td>Hi Red Center</td>\n",
       "      <td>36946</td>\n",
       "      <td>(Japanese, 1963–1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1963)</td>\n",
       "      <td>(1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>1964</td>\n",
       "      <td>Offset</td>\n",
       "      <td>sheet: 6 7/8 x 10\" (17.4 x 25.4 cm)</td>\n",
       "      <td>The Gilbert and Lila Silverman Fluxus Collecti...</td>\n",
       "      <td>FC2887</td>\n",
       "      <td>Print</td>\n",
       "      <td>Fluxus Collection</td>\n",
       "      <td>2008-10-08</td>\n",
       "      <td>N</td>\n",
       "      <td>136625</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>63914</th>\n",
       "      <td>Mid-summer Meadow</td>\n",
       "      <td>Robin Schwartz</td>\n",
       "      <td>5287</td>\n",
       "      <td>(American, born 1957)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1957)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1958</td>\n",
       "      <td>Woodcut</td>\n",
       "      <td>composition: 16 1/4 x 17 1/16\" (41.3 x 43.4cm)...</td>\n",
       "      <td>The Ingram-Merrill Foundation</td>\n",
       "      <td>385.1958</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1958-12-19</td>\n",
       "      <td>Y</td>\n",
       "      <td>68210</td>\n",
       "      <td>http://www.moma.org/collection/works/68210</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjIyMzM4NCJd...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>131800</th>\n",
       "      <td>Bundle of Events from Fluxus 1</td>\n",
       "      <td>Hi Red Center</td>\n",
       "      <td>36946</td>\n",
       "      <td>(Japanese, 1963–1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1963)</td>\n",
       "      <td>(1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>1964, assembled c. 1976</td>\n",
       "      <td>Double-sided offset</td>\n",
       "      <td>book: 7 1/2 × 8 1/4 × 1 15/16\" (19.1 × 21 × 5 cm)</td>\n",
       "      <td>The Gilbert and Lila Silverman Fluxus Collecti...</td>\n",
       "      <td>2183.2008.16</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>2008-10-08</td>\n",
       "      <td>N</td>\n",
       "      <td>277655</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136750</th>\n",
       "      <td>Orgasm Energy Chart</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>7474</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1970</td>\n",
       "      <td>Offset lithograph</td>\n",
       "      <td>composition (irreg.): 15 15/16 × 6 7/16\" (40.5...</td>\n",
       "      <td>Anonymous gift</td>\n",
       "      <td>785.2019</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>2020-04-01</td>\n",
       "      <td>Y</td>\n",
       "      <td>402075</td>\n",
       "      <td>http://www.moma.org/collection/works/402075</td>\n",
       "      <td>http://www.moma.org/media/W1siZiIsIjQ4MTc1MSJd...</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    Title          Artist ConstituentID              ArtistBio  \\\n",
       "101220  News Flash! What Is the Communication Satellit...   Hi Red Center         36946  (Japanese, 1963–1964)   \n",
       "63914                                   Mid-summer Meadow  Robin Schwartz          5287  (American, born 1957)   \n",
       "131800                     Bundle of Events from Fluxus 1   Hi Red Center         36946  (Japanese, 1963–1964)   \n",
       "136750                                Orgasm Energy Chart    General Idea          7474  (Canadian, 1969–1994)   \n",
       "\n",
       "       Nationality BeginDate EndDate    Gender                     Date               Medium  \\\n",
       "101220          ()    (1963)  (1964)        ()                     1964               Offset   \n",
       "63914   (American)    (1957)     (0)  (Female)                     1958              Woodcut   \n",
       "131800          ()    (1963)  (1964)        ()  1964, assembled c. 1976  Double-sided offset   \n",
       "136750  (Canadian)    (1969)  (1994)    (Male)                     1970    Offset lithograph   \n",
       "\n",
       "                                               Dimensions                                         CreditLine  \\\n",
       "101220                sheet: 6 7/8 x 10\" (17.4 x 25.4 cm)  The Gilbert and Lila Silverman Fluxus Collecti...   \n",
       "63914   composition: 16 1/4 x 17 1/16\" (41.3 x 43.4cm)...                      The Ingram-Merrill Foundation   \n",
       "131800  book: 7 1/2 × 8 1/4 × 1 15/16\" (19.1 × 21 × 5 cm)  The Gilbert and Lila Silverman Fluxus Collecti...   \n",
       "136750  composition (irreg.): 15 15/16 × 6 7/16\" (40.5...                                     Anonymous gift   \n",
       "\n",
       "       AccessionNumber    Classification         Department DateAcquired Cataloged  ObjectID  \\\n",
       "101220          FC2887             Print  Fluxus Collection   2008-10-08         N    136625   \n",
       "63914         385.1958             Print  Drawings & Prints   1958-12-19         Y     68210   \n",
       "131800    2183.2008.16  Illustrated Book  Drawings & Prints   2008-10-08         N    277655   \n",
       "136750        785.2019             Print  Drawings & Prints   2020-04-01         Y    402075   \n",
       "\n",
       "                                                URL                                       ThumbnailURL  \n",
       "101220                                          NaN                                                NaN  \n",
       "63914    http://www.moma.org/collection/works/68210  http://www.moma.org/media/W1siZiIsIjIyMzM4NCJd...  \n",
       "131800                                          NaN                                                NaN  \n",
       "136750  http://www.moma.org/collection/works/402075  http://www.moma.org/media/W1siZiIsIjQ4MTc1MSJd...  "
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Value examples\n",
    "moma.iloc[[101220, 63914, 131800, 136750], 0:20]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Since the main goal of this project is to analyze the individual capabilities of the human brain, we'll focus on the artworks created by single authors, not teams.\n",
    "\n",
    "Let's inspect **the `date` columns** such as **`BeginDate`, `EndDate`, `Date`**."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(1995) (1966) (1965)                                                                                                         1\n",
      "(1995) (1968) (1965)                                                                                                         1\n",
      "(1996)                                                                                                                       2\n",
      "(1996) (1960) (1961)                                                                                                         5\n",
      "(1996) (1963) (1965) (1963) (1966) (1965)                                                                                    1\n",
      "(1996) (1963) (1966) (1965) (1963) (1965)                                                                                    1\n",
      "(1997)                                                                                                                      42\n",
      "(1997) (1964) (1966)                                                                                                         3\n",
      "(1997) (1988) (1938) (1968)                                                                                                  1\n",
      "(1998)                                                                                                                       2\n",
      "(1998) (1972)                                                                                                                1\n",
      "(1999)                                                                                                                       1\n",
      "(1999) (1979)                                                                                                                1\n",
      "(2000)                                                                                                                       1\n",
      "(2000) (1969) (1972)                                                                                                         1\n",
      "(2000) (1971) (1972)                                                                                                         1\n",
      "(2001) (1955)                                                                                                                1\n",
      "(2002) (1957) (1959) (1958) (1971) (1958) (1964) (1965) (1963) (1958) (0)                                                    1\n",
      "(2002) (1977)                                                                                                                1\n",
      "(2002) (1977) (1971) (1980)                                                                                                  3\n",
      "(2003)                                                                                                                       3\n",
      "(2003) (0)                                                                                                                   2\n",
      "(2003) (1973) (1972) (1973)                                                                                                  3\n",
      "(2004)                                                                                                                       3\n",
      "(2004) (1973) (0) (0)                                                                                                        1\n",
      "(2004) (1976)                                                                                                                4\n",
      "(2005)                                                                                                                      12\n",
      "(2005) (1943) (1953) (1965) (1960) (1967) (1960) (1967) (1974) (1999) (1959) (1996) (1976) (2004) (1952) (1996) (1988)       6\n",
      "(2006) (1974) (1976) (1976)                                                                                                  1\n",
      "(2006) (1975) (1983)                                                                                                        13\n",
      "(2007)                                                                                                                       1\n",
      "(2007) (0) (1977) (1973) (0) (0)                                                                                             6\n",
      "(2007) (1979) (1980)                                                                                                         3\n",
      "(2007) (1979) (1980) (0) (1977)                                                                                              1\n",
      "(2009) (1980) (1983)                                                                                                         5\n",
      "(2010)                                                                                                                       3\n",
      "(2012)                                                                                                                       1\n",
      "(2014)                                                                                                                       5\n",
      "(2016) (1978) (0) (2014)                                                                                                    15\n",
      "NaN                                                                                                                       1314\n",
      "Name: BeginDate, dtype: int64\n",
      "Index(['(0)', '(0) (0)', '(0) (0) (0)', '(0) (0) (0) (0)', '(0) (0) (0) (0) (0)', '(0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (1957)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (1957)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (1957)', '(0) (0) (0) (0) (0) (0) (0) (0) (0) (1957)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (1957)',\n",
      "       '(0) (0) (0) (0) (0) (0) (1955) (0) (0) (1956) (0) (1943) (0) (1954) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (1957)', '(0) (0) (0) (0) (0) (1923) (0) (0) (0)', '(0) (0) (0) (0) (0) (2001)',\n",
      "       '(0) (0) (0) (0) (1937) (0) (0) (1939) (0)', '(0) (0) (0) (1867) (0)', '(0) (0) (0) (1872) (0)',\n",
      "       '(0) (0) (0) (1875) (0) (0)', '(0) (0) (0) (1897)',\n",
      "       '(0) (0) (0) (1922) (0) (0) (1933) (1937) (1916) (1899) (1935)', '(0) (0) (1862) (1861) (0)',\n",
      "       '(0) (0) (1863) (0) (0)', '(0) (0) (1877)', '(0) (0) (1886) (1883)',\n",
      "       '(0) (0) (1889) (1888) (1892) (0) (0) (1875) (0) (0) (1891) (0) (1891) (0) (1861) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (1894) (0) (0) (0) (1898)', '(0) (0) (1894) (0) (0) (1894) (0) (0) (0) (0)', '(0) (0) (1895)',\n",
      "       '(0) (0) (1896) (1892)', '(0) (0) (1897) (1892)', '(0) (0) (1899) (0) (1883) (1891)', '(0) (0) (1902) (0)',\n",
      "       '(0) (0) (1903)',\n",
      "       '(0) (0) (1922) (1922) (1930) (1938) (1925) (1927) (1936) (1916) (1928) (1928) (1926) (1930) (0) (0) (0)',\n",
      "       '(0) (0) (1925) (1894)', '(0) (0) (1925) (1900) (1904)', '(0) (0) (1926)',\n",
      "       '(0) (0) (1934) (0) (1927) (1938) (0) (1927) (1940) (1933) (1929) (1936) (0) (1926) (1926) (1932) (1932) (0) (1930) (1930) (1925) (1935) (1932) (1928) (0)'],\n",
      "      dtype='object')\n"
     ]
    }
   ],
   "source": [
    "# Value examples\n",
    "print(moma['BeginDate'].value_counts(dropna=False).sort_index().tail(40),\n",
    "      moma['BeginDate'].value_counts(dropna=False).sort_index().head(40).index,\n",
    "      sep='\\n'\n",
    "     )"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(2017) (0) (0)                                                               10\n",
      "(2017) (0) (0) (0) (0)                                                        1\n",
      "(2017) (0) (0) (0) (0) (0) (0)                                                1\n",
      "(2017) (0) (0) (0) (0) (0) (1988) (0) (0) (0) (0) (0)                         1\n",
      "(2017) (0) (1970) (0)                                                         1\n",
      "(2017) (1986)                                                                 1\n",
      "(2017) (2006) (2009)                                                         23\n",
      "(2017) (2013)                                                                 1\n",
      "(2017) (2014)                                                                 3\n",
      "(2017) (2017)                                                                 1\n",
      "(2017) (2018) (2007) (1997) (0) (0) (0)                                       5\n",
      "(2018)                                                                      513\n",
      "(2018) (0)                                                                    2\n",
      "(2018) (0) (1978) (1993)                                                      1\n",
      "(2018) (0) (2008)                                                             2\n",
      "(2018) (1966)                                                                 4\n",
      "(2018) (1978)                                                                 2\n",
      "(2018) (1978) (0)                                                             1\n",
      "(2018) (1987)                                                                 1\n",
      "(2018) (1988)                                                                 1\n",
      "(2018) (2006) (2009)                                                         29\n",
      "(2018) (2017) (0)                                                             1\n",
      "(2019)                                                                      479\n",
      "(2019) (0)                                                                   13\n",
      "(2019) (0) (0)                                                                1\n",
      "(2019) (0) (0) (0)                                                            1\n",
      "(2019) (0) (0) (0) (0) (0) (0) (0)                                           10\n",
      "(2019) (1958)                                                                 1\n",
      "(2019) (1981)                                                                 1\n",
      "(2019) (1998) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)                         1\n",
      "(2020)                                                                      570\n",
      "(2020) (0)                                                                    6\n",
      "(2020) (0) (0) (0) (0) (2015) (0) (0) (2012) (2020) (0) (0) (0) (0) (0)       1\n",
      "(2020) (0) (1969)                                                             1\n",
      "(2020) (1989) (0)                                                             1\n",
      "(2020) (2006)                                                                 8\n",
      "(2020) (2006) (2009)                                                         64\n",
      "(2020) (2010)                                                                 1\n",
      "(2020) (2011)                                                                 2\n",
      "NaN                                                                        1314\n",
      "Name: EndDate, dtype: int64\n",
      "Index(['(0)', '(0) (0)', '(0) (0) (0)', '(0) (0) (0) (0)', '(0) (0) (0) (0) (0)', '(0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0)', '(0) (0) (0) (0) (0) (0) (0) (0)', '(0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0)', '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)', '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (1999) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (1992) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (2017) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (0) (2011) (1995) (0) (0) (0) (2007) (2017) (2005) (0) (2003) (0)',\n",
      "       '(0) (0) (0) (0) (0) (0) (0) (0) (2009) (0)', '(0) (0) (0) (0) (0) (0) (1999) (0) (0) (0) (2005)',\n",
      "       '(0) (0) (0) (0) (0) (0) (2013) (0)', '(0) (0) (0) (0) (0) (1997) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (2004) (0) (0) (0)', '(0) (0) (0) (0) (0) (2012) (0) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (0) (2014) (0)', '(0) (0) (0) (0) (0) (2014) (0) (0) (0) (0) (0)',\n",
      "       '(0) (0) (0) (0) (1983) (2008) (0) (0) (1987) (0) (2004) (2010) (2006) (0) (0) (1990) (2015) (2005) (2003) (0) (2019) (1990)',\n",
      "       '(0) (0) (0) (0) (1988)', '(0) (0) (0) (0) (1991) (0)',\n",
      "       '(0) (0) (0) (0) (1995) (1998) (0) (2006) (0) (0) (1998) (0) (0) (2017) (0) (1993) (2006) (0) (1998) (0) (1991) (0) (1998) (2013) (0)',\n",
      "       '(0) (0) (0) (0) (1996) (0) (0) (0) (0) (0) (0) (0)', '(0) (0) (0) (0) (2009) (0)',\n",
      "       '(0) (0) (0) (0) (2012) (0) (0) (0)', '(0) (0) (0) (1910) (0)', '(0) (0) (0) (1923) (0)', '(0) (0) (0) (1932)',\n",
      "       '(0) (0) (0) (1936) (0)'],\n",
      "      dtype='object')\n"
     ]
    }
   ],
   "source": [
    "# Value examples\n",
    "print(moma['EndDate'].value_counts(dropna=False).sort_index().tail(40),\n",
    "      moma['EndDate'].value_counts(dropna=False).sort_index().head(40).index,\n",
    "      sep='\\n'\n",
    "     )"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " 1961                                               1\n",
      "(1858)                                              1\n",
      "(1868-69?)                                          1\n",
      "(1873)                                              1\n",
      "(1883)                                              1\n",
      "                                                 ... \n",
      "version I, 1918                                     1\n",
      "version I, 1920 (close to the marble of 1915)       1\n",
      "winter 1908-09                                      1\n",
      "winter 1911-12                                      1\n",
      "NaN                                              2225\n",
      "Name: Date, Length: 9384, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "# Value examples\n",
    "print(moma['Date'].value_counts(dropna=False).sort_index())"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The `BeginDate` and `EndDate` columns, like the `Gender` column, contain groups of values for the teams:\n",
    "\n",
    "- `(2020) (2006) (2009)`\n",
    "- `(0) (0) (0) (0)`\n",
    "- `(0) (0) (0) (1936) (0)`\n",
    "\n",
    "The `Date` column contains quite mixed data that needs to be cleaned up. The artwork creation date can be:\n",
    "\n",
    "- one year,\n",
    "- range of years.\n",
    "\n",
    "So, we have a following plan to clean up the data:\n",
    "\n",
    "1. Drop the rows where the `BeginDate` or `Date` columns contain null values, since we won't be able calculate the age.\n",
    "2. Drop the rows where artist is not a single author.\n",
    "3. For the `BeginDate` and `EndDate` columns:\n",
    "\n",
    "    - Extract and convert the year to a number.\n",
    "    - Assign it to the new columns `begin_date_clean` and `end_date_clean`.\n",
    "\n",
    "\n",
    "4. Clean up the gender and assign it to the `gender_clean` column.\n",
    "5. For the `Date` column:\n",
    "\n",
    "    - If the date isn't a range:\n",
    "\n",
    "        * Extract and convert the value to a number.\n",
    "\n",
    "    - If the date is a range:\n",
    "\n",
    "        * Extract two bound years.\n",
    "        * Convert them to the integer type and then average them by adding them together and dividing by two.\n",
    "        * Use the round() function to round the average, so values like 1872.5 become 1872.\n",
    "\n",
    "    - Assign the year to the `data_clean` column.\n",
    "\n",
    "\n",
    "## Clearing The Data\n",
    "\n",
    "We'll perform data cleanup iteratively, step by step. We'll use hard-coded regular expression patterns to avoid missing any values.\n",
    "\n",
    "### Drop the columns\n",
    "\n",
    "First, let's drop the unnecessary columns from the dataframe.  \n",
    "The `ConstituentID`, `Medium`, `Dimensions`, `CreditLine`, `AccessionNumber`, `DateAcquired`, `Cataloged`, `ObjectID`, `URL`, `ThumbnailURL`, `Circumference (cm)`, `Depth (cm)`, `Diameter (cm)`, `Height (cm)`, `Length (cm)`, `Weight (kg)`, `Width (cm)`, `Seat Height (cm)`, `Duration (sec.)` columns don't contain some useful information for our goal."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop:\n",
      "Index(['Title', 'Artist', 'ConstituentID', 'ArtistBio', 'Nationality', 'BeginDate', 'EndDate', 'Gender', 'Date',\n",
      "       'Medium', 'Dimensions', 'CreditLine', 'AccessionNumber', 'Classification', 'Department', 'DateAcquired',\n",
      "       'Cataloged', 'ObjectID', 'URL', 'ThumbnailURL', 'Circumference (cm)', 'Depth (cm)', 'Diameter (cm)',\n",
      "       'Height (cm)', 'Length (cm)', 'Weight (kg)', 'Width (cm)', 'Seat Height (cm)', 'Duration (sec.)'],\n",
      "      dtype='object')\n",
      "\n",
      "After drop:\n",
      "Index(['Title', 'Artist', 'ArtistBio', 'Nationality', 'BeginDate', 'EndDate', 'Gender', 'Date', 'Classification',\n",
      "       'Department'],\n",
      "      dtype='object')\n"
     ]
    }
   ],
   "source": [
    "print('Before drop:', moma.columns, sep='\\n', end='\\n\\n')\n",
    "\n",
    "# List to drop\n",
    "drop_cols = ['ConstituentID', 'Medium', 'Dimensions', 'CreditLine', 'AccessionNumber', 'DateAcquired',\n",
    "             'Cataloged', 'ObjectID', 'URL', 'ThumbnailURL', 'Circumference (cm)',\n",
    "             'Depth (cm)', 'Diameter (cm)', 'Height (cm)', 'Length (cm)', 'Weight (kg)', 'Width (cm)',\n",
    "             'Seat Height (cm)', 'Duration (sec.)'\n",
    "            ]\n",
    "\n",
    "# Drop columns\n",
    "moma.drop(drop_cols, axis=1, inplace=True)\n",
    "\n",
    "print('After drop:', moma.columns, sep='\\n')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Rename the columns\n",
    "\n",
    "Let's convert the remaining column names to `snake_case` format."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before rename:\n",
      "Index(['Title', 'Artist', 'ArtistBio', 'Nationality', 'BeginDate', 'EndDate', 'Gender', 'Date', 'Classification',\n",
      "       'Department'],\n",
      "      dtype='object')\n",
      "\n",
      "After rename:\n",
      "Index(['title', 'artist', 'artist_bio', 'nationality', 'begin_date', 'end_date', 'gender', 'date', 'classification',\n",
      "       'department'],\n",
      "      dtype='object')\n"
     ]
    }
   ],
   "source": [
    "print('Before rename:', moma.columns, sep='\\n', end='\\n\\n')\n",
    "\n",
    "# Convert to lower case\n",
    "moma.columns = moma.columns.str.lower()\n",
    "\n",
    "# Add underline\n",
    "cols = {'artistbio':'artist_bio', 'begindate':'begin_date', 'enddate':'end_date'}\n",
    "moma.rename(columns=cols, inplace=True)\n",
    "\n",
    "print('After rename:', moma.columns, sep='\\n')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Clear the `ArtistBio` column\n",
    "\n",
    "The `ArtistBio` column contains some details about the artist. Years from this column are also represented in the `BeginDate` and `EndDate` columns we are interested in.\n",
    "\n",
    "As mentioned, we need to remove all companies and other author groups. For instance, the `ArtistBio` contains values such as `(British, founded 1967)` or `(Italian, established 1969)` for organizations.\n",
    "\n",
    "Also, the column may represent the artist's years of activity, rather than the years of life. Since we are interested in the year of birth to calculate the age, these rows are useless.\n",
    "\n",
    "Let's drop all of them."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                        artist_bio  artist_bio_pattern_drop\n",
      "0          (British, founded 1967)                     True\n",
      "1      (Italian, established 1969)                     True\n",
      "2                      (est. 1933)                     True\n",
      "3  (American, active 1904–present)                     True\n",
      "\n"
     ]
    },
    {
     "data": {
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       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>valid_count</th>\n",
       "      <th>valid_percentage</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>True</th>\n",
       "      <td>136719</td>\n",
       "      <td>136719</td>\n",
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       "    <tr>\n",
       "      <th>False</th>\n",
       "      <td>1442</td>\n",
       "      <td>1442</td>\n",
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       "  </tbody>\n",
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       "</div>"
      ],
      "text/plain": [
       "       valid_count  valid_percentage\n",
       "True        136719            136719\n",
       "False         1442              1442"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "artist_bio_pattern_drop = r'(?:founded|established|est\\.|active|formed)'\n",
    "\n",
    "# Test\n",
    "artist_bio_test = pd.DataFrame(['(British, founded 1967)',\n",
    "                                '(Italian, established 1969)',\n",
    "                                '(est. 1933)',\n",
    "                                '(American, active 1904–present)'\n",
    "                               ], columns=['artist_bio'])\n",
    "artist_bio_test['artist_bio_pattern_drop'] = artist_bio_test['artist_bio'].str.contains(artist_bio_pattern_drop, flags=re.I)\n",
    "print(artist_bio_test, end='\\n\\n')\n",
    "\n",
    "artist_bio_bool_drop = moma['artist_bio'].str.contains(artist_bio_pattern_drop, flags=re.I) # bool mask to drop\n",
    "artist_bio_bool_drop.fillna(False, inplace=True) # do not drop artist_bio with NaN\n",
    "\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "artist_bio_cnt = (~artist_bio_bool_drop).value_counts(dropna=False)\n",
    "\n",
    "# Percentage of valid (True) and invalid (False) rows\n",
    "artist_bio_pct = artist_bio_cnt * 100 / moma.shape[0]\n",
    "artist_bio_pct = (~artist_bio_bool_drop).value_counts(dropna=False)\n",
    "\n",
    "artist_bio_stat = pd.DataFrame({'valid_count': artist_bio_cnt, 'valid_percentage': artist_bio_pct})\n",
    "artist_bio_stat"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop:\n",
      "total: 138161\n",
      "True     136719\n",
      "False      1442\n",
      "Name: artist_bio, dtype: int64\n",
      "\n",
      "After drop:\n",
      "total: 136719\n",
      "True    136719\n",
      "Name: artist_bio, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~artist_bio_bool_drop).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "artist_bio_drop = moma[artist_bio_bool_drop].index # rows to drop\n",
    "moma.drop(index=artist_bio_drop, inplace=True)\n",
    "\n",
    "print('After drop:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~(moma['artist_bio'].str.contains(artist_bio_pattern_drop, flags=re.I)\n",
    "                           .fillna(False)\n",
    "        )\n",
    "      ).value_counts(dropna=False)\n",
    "     )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Clear the `BeginDate` column\n",
    "\n",
    "According to the plan above, we'll remove rows with `NaN` values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before dropna:\n",
      "total: 136719\n",
      "NaNs: 1314\n",
      "\n",
      "After dropna:\n",
      "total: 135405\n",
      "NaNs: 0\n"
     ]
    }
   ],
   "source": [
    "print('Before dropna:')\n",
    "print('total:', moma.shape[0]) # print the total number of rows before\n",
    "print('NaNs:', moma['begin_date'].isna().sum(), end='\\n\\n') # print the number of NaNs before\n",
    "\n",
    "moma.dropna(subset=['begin_date'], axis=0, inplace=True) # drop NaNs\n",
    "\n",
    "print('After dropna:')\n",
    "print('total:', moma.shape[0]) # print the total number of rows after\n",
    "print('NaNs:', moma['begin_date'].isna().sum()) # print the number of NaNs after"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Let's remove rows containing a group of values from the dataset (for example, `(2020) (0) (1969)`), that is, organizations."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                       begin_date  begin_date_pattern\n",
      "0                             (0)               False\n",
      "1                        (0)  (0)               False\n",
      "2                      (1885) (0)               False\n",
      "3  (0) (1995)(1895) (1847) (1900)               False\n",
      "4                          (1880)                True\n",
      "\n"
     ]
    },
    {
     "data": {
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       "      <th></th>\n",
       "      <th>valid_count</th>\n",
       "      <th>valid_percentage</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>True</th>\n",
       "      <td>120458</td>\n",
       "      <td>88.961264</td>\n",
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       "    <tr>\n",
       "      <th>False</th>\n",
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       "       valid_count  valid_percentage\n",
       "True        120458         88.961264\n",
       "False        14947         11.038736"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "begin_date_pattern = r'^\\(([0-2]\\d{3})\\)$'\n",
    "\n",
    "# Test\n",
    "begin_date_test = pd.DataFrame(['(0)',\n",
    "                                '(0)  (0)',\n",
    "                                '(1885) (0)',\n",
    "                                '(0) (1995)'\n",
    "                                '(1895) (1847) (1900)',\n",
    "                                '(1880)'\n",
    "                         ], columns=['begin_date'])\n",
    "begin_date_test['begin_date_pattern'] = (begin_date_test['begin_date'].str.replace(r'\\s', '')\n",
    "                                                                      .str.match(begin_date_pattern, flags=re.I)\n",
    "                                        )\n",
    "print(begin_date_test, end='\\n\\n')\n",
    "\n",
    "# Valid rows\n",
    "begin_date_bool_valid = moma['begin_date'].str.replace(r'\\s', '').str.match(begin_date_pattern, flags=re.I)\n",
    "\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "begin_date_cnt = begin_date_bool_valid.value_counts(dropna=False)\n",
    "\n",
    "# Percentage of valid (True) and invalid (False) rows\n",
    "begin_date_pct = begin_date_cnt * 100 / moma.shape[0]\n",
    "\n",
    "begin_date_stat = pd.DataFrame({'valid_count': begin_date_cnt, 'valid_percentage': begin_date_pct})\n",
    "begin_date_stat"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Although this is a large percentage (about 11%) of the total number of rows, we have to drop them."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop:\n",
      "total: 135405\n",
      "True     120458\n",
      "False     14947\n",
      "Name: begin_date, dtype: int64\n",
      "\n",
      "After drop:\n",
      "total: 120458\n",
      "True    120458\n",
      "Name: begin_date, dtype: int64\n",
      "\n"
     ]
    }
   ],
   "source": [
    "print('Before drop:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print(begin_date_bool_valid.value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "begin_date_drop = moma[~begin_date_bool_valid].index # rows to drop\n",
    "moma.drop(index=begin_date_drop, inplace=True)\n",
    "\n",
    "print('After drop:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((moma['begin_date'].str.replace(r'\\s', '')\n",
    "                         .str.match(begin_date_pattern, flags=re.I)\n",
    "                         .value_counts(dropna=False)\n",
    "      ), end='\\n\\n'\n",
    "     )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now let's convert the years to the integer type and add these values to the new `begin_date_clean` column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "<style scoped>\n",
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       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>begin_date</th>\n",
       "      <th>begin_date_clean</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>(1841)</td>\n",
       "      <td>1841</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>(1876)</td>\n",
       "      <td>1876</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>(1876)</td>\n",
       "      <td>1876</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>(1944)</td>\n",
       "      <td>1944</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "  begin_date  begin_date_clean\n",
       "0     (1841)              1841\n",
       "1     (1944)              1944\n",
       "2     (1876)              1876\n",
       "3     (1944)              1944\n",
       "4     (1876)              1876\n",
       "5     (1944)              1944\n",
       "6     (1944)              1944\n",
       "7     (1944)              1944\n",
       "8     (1944)              1944\n",
       "9     (1944)              1944"
      ]
     },
     "execution_count": 19,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Extract the birth year\n",
    "moma['begin_date_clean'] = (moma['begin_date'].str.replace(r'\\s', '')\n",
    "                                              .str.extract(begin_date_pattern, flags=re.I)\n",
    "                                              .astype(int)\n",
    "                           )\n",
    "moma[['begin_date', 'begin_date_clean']].head(10) # check the values"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Clear the `EndDate` column\n",
    "\n",
    "The year of death is not directly involved in the calculation of age. However, we'll clean up the `end_date` column to use it for validation: `date <= end_date`.\n",
    "\n",
    "Let's check the column for `NaN` values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "NaNs: 0\n"
     ]
    }
   ],
   "source": [
    "print('NaNs:', moma['end_date'].isna().sum()) # print the number of NaNs"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "There are no empty values in the `end_date`.  \n",
    "\n",
    "Let's take a look at the single year values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "\n",
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>valid_count</th>\n",
       "      <th>valid_percentage</th>\n",
       "    </tr>\n",
       "  </thead>\n",
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       "    <tr>\n",
       "      <th>True</th>\n",
       "      <td>82898</td>\n",
       "      <td>68.819007</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>False</th>\n",
       "      <td>37560</td>\n",
       "      <td>31.180993</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "       valid_count  valid_percentage\n",
       "True         82898         68.819007\n",
       "False        37560         31.180993"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "end_date_pattern = r'^\\(([0-2]\\d{3})\\)$'\n",
    "\n",
    "# Valid rows\n",
    "end_date_bool_valid = moma['end_date'].str.replace(r'\\s', '').str.match(end_date_pattern, flags=re.I)\n",
    "\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "end_date_cnt = end_date_bool_valid.value_counts(dropna=False)\n",
    "\n",
    "# Percentage of valid (True) and invalid (False) rows\n",
    "end_date_pct = end_date_cnt * 100 / moma.shape[0]\n",
    "\n",
    "end_date_stat = pd.DataFrame({'valid_count': end_date_cnt, 'valid_percentage': end_date_pct})\n",
    "end_date_stat"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(0)    37560\n",
       "Name: end_date, dtype: int64"
      ]
     },
     "execution_count": 22,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Inspect values\n",
    "moma.loc[~end_date_bool_valid, 'end_date'].value_counts()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "About 30% of the rows doesn't contain the year of death.  \n",
    "\n",
    "We'll extract the years and convert them to an integer, then add those values to the `end_date_clean` column.\n",
    "Also we'll fill in the empty values with `0` in the `end_date_clean` column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "True    120458\n",
      "Name: end_date_clean, dtype: int64\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
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       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>end_date</th>\n",
       "      <th>end_date_clean</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>(1918)</td>\n",
       "      <td>1918</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>(0)</td>\n",
       "      <td>0</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>(1957)</td>\n",
       "      <td>1957</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>(0)</td>\n",
       "      <td>0</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>(1957)</td>\n",
       "      <td>1957</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>(0)</td>\n",
       "      <td>0</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "  end_date  end_date_clean\n",
       "0   (1918)            1918\n",
       "1      (0)               0\n",
       "2   (1957)            1957\n",
       "3      (0)               0\n",
       "4   (1957)            1957\n",
       "5      (0)               0"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Extract the death year\n",
    "moma['end_date_clean'] = (moma.loc[end_date_bool_valid, 'end_date'].str.replace(r'\\s', '')\n",
    "                                                                   .str.extract(end_date_pattern, flags=re.I)\n",
    "                         )\n",
    "moma['end_date_clean'].fillna(0, inplace=True)\n",
    "moma['end_date_clean'] = moma['end_date_clean'].astype(int)\n",
    "\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print(moma['end_date_clean'].notnull().value_counts())\n",
    "moma[['end_date', 'end_date_clean']].head(6) # check the values"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Clear the `Gender` column\n",
    "\n",
    "We'll clean up the `Gender` column to create plots for men and women.\n",
    "\n",
    "Let's check for NaN values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "NaNs: 0\n"
     ]
    }
   ],
   "source": [
    "print('NaNs:', moma['gender'].isna().sum()) # print the number of NaNs"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "There are no `NaN` values in the `gender` column.\n",
    "\n",
    "Let's consider the rows where the `gender` column contains a single value."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>valid_count</th>\n",
       "      <th>valid_percentage</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>True</th>\n",
       "      <td>120029</td>\n",
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       "    <tr>\n",
       "      <th>False</th>\n",
       "      <td>429</td>\n",
       "      <td>0.356141</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "       valid_count  valid_percentage\n",
       "True        120029         99.643859\n",
       "False          429          0.356141"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "gender_pattern = r'^\\((?P<gender>(?:male|female))\\)$'\n",
    "\n",
    "# Valid rows\n",
    "gender_bool_valid = moma['gender'].str.replace(r'\\s', '').str.match(gender_pattern, flags=re.I)\n",
    "\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "gender_cnt = gender_bool_valid.value_counts(dropna=False)\n",
    "\n",
    "# Percentage of valid (True) and invalid (False) rows\n",
    "gender_pct = gender_cnt * 100 / moma.shape[0]\n",
    "\n",
    "gender_stat = pd.DataFrame({'valid_count': gender_cnt, 'valid_percentage': gender_pct})\n",
    "gender_stat"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "()              418\n",
       "(Non-Binary)     11\n",
       "Name: gender, dtype: int64"
      ]
     },
     "execution_count": 26,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Inspect values\n",
    "moma.loc[~gender_bool_valid, 'gender'].value_counts()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The gender is not defined in 429 rows.\n",
    "\n",
    "We'll extract valid gender values and assign them to the `gender_clean` column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "True     120029\n",
      "False       429\n",
      "Name: gender_clean, dtype: int64\n",
      "\n",
      "male      102580\n",
      "female     17449\n",
      "NaN          429\n",
      "Name: gender_clean, dtype: int64\n"
     ]
    },
    {
     "data": {
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       "      <th></th>\n",
       "      <th>gender</th>\n",
       "      <th>gender_clean</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>(Male)</td>\n",
       "      <td>male</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>(Male)</td>\n",
       "      <td>male</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>(Male)</td>\n",
       "      <td>male</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>(Male)</td>\n",
       "      <td>male</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>(Male)</td>\n",
       "      <td>male</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "   gender gender_clean\n",
       "0  (Male)         male\n",
       "1  (Male)         male\n",
       "2  (Male)         male\n",
       "3  (Male)         male\n",
       "4  (Male)         male"
      ]
     },
     "execution_count": 27,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Extract the gender\n",
    "moma['gender_clean'] = (moma.loc[gender_bool_valid, 'gender'].str.replace(r'\\s', '')\n",
    "                                                             .str.extract(gender_pattern, flags=re.I)['gender']\n",
    "                                                             .str.lower()\n",
    "                       )\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print(moma['gender_clean'].notnull().value_counts(), end='\\n\\n')\n",
    "print(moma['gender_clean'].value_counts(dropna=False))\n",
    "moma[['gender', 'gender_clean']].head() # check the values"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Clear the `Nationality` column\n",
    "\n",
    "We'll process the this column to create plots depending on nationality.\n",
    "\n",
    "First, check for NaN values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "NaNs: 0\n"
     ]
    }
   ],
   "source": [
    "print('NaNs:', moma['nationality'].isna().sum()) # print the number of NaNs"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "There are no `NaN` values in the `Nationality` column.\n",
    "\n",
    "Let's consider the rows where the `nationality` column contains a single value."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>valid_count</th>\n",
       "      <th>valid_percentage</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>True</th>\n",
       "      <td>120295</td>\n",
       "      <td>99.864683</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>False</th>\n",
       "      <td>163</td>\n",
       "      <td>0.135317</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "       valid_count  valid_percentage\n",
       "True        120295         99.864683\n",
       "False          163          0.135317"
      ]
     },
     "execution_count": 29,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "nationality_pattern = r'^\\((?P<nationality>(.+))\\)$'\n",
    "\n",
    "# Valid rows\n",
    "nationality_bool_valid = moma['nationality'].str.replace(r'\\s', '').str.match(nationality_pattern, flags=re.I)\n",
    "\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "nationality_cnt = nationality_bool_valid.value_counts(dropna=False)\n",
    "\n",
    "# Percentage of valid (True) and invalid (False) rows\n",
    "nationality_pct = nationality_cnt * 100 / moma.shape[0]\n",
    "\n",
    "nationality_stat = pd.DataFrame({'valid_count': nationality_cnt, 'valid_percentage': nationality_pct})\n",
    "nationality_stat"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "()    163\n",
       "Name: nationality, dtype: int64"
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Inspect values\n",
    "moma.loc[~nationality_bool_valid, 'nationality'].value_counts()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The nationality is not defined in 163 rows.\n",
    "\n",
    "We'll extract valid nationality values and assign them to the `nationality_clean` column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "True     120295\n",
      "False       163\n",
      "Name: nationality_clean, dtype: int64\n",
      "\n",
      "american       56038\n",
      "french         22392\n",
      "german          8955\n",
      "british         5306\n",
      "spanish         3082\n",
      "               ...  \n",
      "kuwaiti            1\n",
      "ugandan            1\n",
      "vietnamese         1\n",
      "nicaraguan         1\n",
      "azerbaijani        1\n",
      "Name: nationality_clean, Length: 113, dtype: int64\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
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       "    }\n",
       "\n",
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       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>nationality</th>\n",
       "      <th>nationality_clean</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>(Austrian)</td>\n",
       "      <td>austrian</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>(French)</td>\n",
       "      <td>french</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>(Austrian)</td>\n",
       "      <td>austrian</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>()</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>(Austrian)</td>\n",
       "      <td>austrian</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "  nationality nationality_clean\n",
       "0  (Austrian)          austrian\n",
       "1    (French)            french\n",
       "2  (Austrian)          austrian\n",
       "3          ()               NaN\n",
       "4  (Austrian)          austrian"
      ]
     },
     "execution_count": 31,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Extract the nationality\n",
    "moma['nationality_clean'] = (moma.loc[nationality_bool_valid, 'nationality'].str.replace(r'\\s', '')\n",
    "                                     .str.extract(nationality_pattern, flags=re.I)['nationality']\n",
    "                                     .str.lower()\n",
    "                       )\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print(moma['nationality_clean'].notnull().value_counts(), end='\\n\\n')\n",
    "print(moma['nationality_clean'].value_counts(dropna=False))\n",
    "moma[['nationality', 'nationality_clean']].head() # check the values"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Clear the `Date` column\n",
    "\n",
    "Now, we'll continue with clearing the `date` column.\n",
    "\n",
    "As a reminder, we decided to process the `date` column as follows:\n",
    "\n",
    "- If the date isn't a range:\n",
    "\n",
    "    * Extract and convert the value to a number.\n",
    "\n",
    "- If the date is a range:\n",
    "\n",
    "    * Extract two bound years.\n",
    "    * Convert them to the integer type and then average them by adding them together and dividing by two.\n",
    "    * Use the round() function to round the average, so values like 1872.5 become 1872.\n",
    "\n",
    "- Assign the year to the `data_clean` column.\n",
    "\n",
    "Let's drop the rows with `NaN` values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before dropna:\n",
      "total: 120458\n",
      "NaNs: 1362\n",
      "\n",
      "After dropna:\n",
      "total: 119096\n",
      "NaNs: 0\n"
     ]
    }
   ],
   "source": [
    "print('Before dropna:')\n",
    "print('total:', moma.shape[0]) # print the total number of rows before\n",
    "print('NaNs:', moma['date'].isna().sum(), end='\\n\\n') # print the number of NaNs before\n",
    "\n",
    "moma.dropna(subset=['date'], axis=0, inplace=True) # drop NaNs\n",
    "\n",
    "print('After dropna:')\n",
    "print('total:', moma.shape[0]) # print the total number of rows after\n",
    "print('NaNs:', moma['date'].isna().sum()) # print the number of NaNs after"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "First, we'll prepare the data: remove `c.`, `(`, `)` and do some others replacements that you can see below."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                                          date                 date_pattern_char_replace\n",
      "0                                     c. 1960s                                     1960s\n",
      "1                        c. 1964, printed 1992                        1964, printed 1992\n",
      "2                                  c.1935-1945                                 1935-1945\n",
      "3                         c. 1983, signed 2007                         1983, signed 2007\n",
      "4                                 (c. 1914-20)                                   1914-20\n",
      "5                       1964, assembled c.1965                      1964, assembled 1965\n",
      "6        1927.  (Print executed c. 1925-1927).           1927. Print executed 1925-1927.\n",
      "7                            published c. 1946                            published 1946\n",
      "8                                      (1960s)                                     1960s\n",
      "9                        1973 (published 1974)                       1973 published 1974\n",
      "10  Published 1944 (Prints executed 1915-1930)  Published 1944 Prints executed 1915-1930\n",
      "11             (September 29-October 24, 1967)             September 29-October 24, 1967\n",
      "12                      1965-66,  printed 1983                     1965-66, printed 1983\n",
      "13                                 1968 - 1972                                 1968-1972\n",
      "14                     1947–49, published 1949                   1947-49, published 1949\n",
      "15                                Dec. 9, 1954                              Dec. 9, 1954\n",
      "\n",
      "Before replace:\n",
      "138151    1935 (originals executed 1933–34)\n",
      "138152    1935 (originals executed 1933–34)\n",
      "138153    1935 (originals executed 1933–34)\n",
      "138154    1935 (originals executed 1933–34)\n",
      "138155    1935 (originals executed 1933–34)\n",
      "138156    1935 (originals executed 1933–34)\n",
      "138157    1935 (originals executed 1933–34)\n",
      "138158    1935 (originals executed 1933–34)\n",
      "138159    1935 (originals executed 1933–34)\n",
      "138160    1935 (originals executed 1933–34)\n",
      "Name: date, dtype: object\n",
      "\n",
      "After replace:\n",
      "138151    1935 originals executed 1933-34\n",
      "138152    1935 originals executed 1933-34\n",
      "138153    1935 originals executed 1933-34\n",
      "138154    1935 originals executed 1933-34\n",
      "138155    1935 originals executed 1933-34\n",
      "138156    1935 originals executed 1933-34\n",
      "138157    1935 originals executed 1933-34\n",
      "138158    1935 originals executed 1933-34\n",
      "138159    1935 originals executed 1933-34\n",
      "138160    1935 originals executed 1933-34\n",
      "Name: date, dtype: object\n"
     ]
    }
   ],
   "source": [
    "date_pattern_char_replace = {r'(?:\\bc\\.\\s?|\\(|\\)|;|:)': '', # remove special chars\n",
    "                             r'\\s+': ' ', # reduce gaps\n",
    "                             r'(?:\\–|\\/|\\s\\-\\s)': '-' # set range character as hyphen\n",
    "                            } # dictionary to replace\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['c. 1960s',\n",
    "                          'c. 1964, printed 1992',\n",
    "                          'c.1935-1945',\n",
    "                          'c. 1983, signed 2007',\n",
    "                          '(c. 1914-20)',\n",
    "                          '1964, assembled c.1965',\n",
    "                          '1927.  (Print executed c. 1925-1927).',\n",
    "                          'published c. 1946',\n",
    "                          '(1960s)',\n",
    "                          '1973 (published 1974)',\n",
    "                          'Published 1944 (Prints executed 1915-1930)',\n",
    "                          '(September 29-October 24, 1967)',\n",
    "                          '1965-66,  printed 1983',\n",
    "                          '1968 - 1972',\n",
    "                          '1947–49, published 1949',\n",
    "                          'Dec. 9, 1954'\n",
    "                         ], columns=['date'])\n",
    "date_test['date_pattern_char_replace'] = date_test['date'].replace(regex=date_pattern_char_replace)\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "# Replace chars\n",
    "print('Before replace:', moma['date'].tail(10), sep='\\n', end='\\n\\n')\n",
    "moma['date'] = moma['date'].replace(regex=date_pattern_char_replace) # replace\n",
    "print('After replace:', moma['date'].tail(10), sep='\\n')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Look at the values without year pattern."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "moma values:\n",
      "n.d.                                                                              676\n",
      "Unknown                                                                           123\n",
      "unknown                                                                            19\n",
      "London?, published in aid of the Comforts Fund for Women and Children of Sovie      7\n",
      "no date                                                                             4\n",
      "TBC                                                                                 3\n",
      "New York                                                                            2\n",
      "TBD                                                                                 2\n",
      "Various                                                                             1\n",
      "196?                                                                                1\n",
      "date of publicati                                                                   1\n",
      "newspaper published March 30                                                        1\n",
      "Unkown                                                                              1\n",
      "n.d                                                                                 1\n",
      "nd                                                                                  1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 843\n"
     ]
    }
   ],
   "source": [
    "date_pattern_drop_1 = r'([0-2]\\d{3})'\n",
    "\n",
    "date_bool_drop_1 = moma['date'].str.count(date_pattern_drop_1) == 0 # bool mask to drop\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_drop_1, 'date'].value_counts(dropna=False), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_drop_1.sum()))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "It doesn't make sense to do data recovery as part of this project. So we'll get rid of these rows."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop 1:\n",
      "total: 119096\n",
      "True     118253\n",
      "False       843\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After drop 1:\n",
      "total: 118253\n",
      "True    118253\n",
      "Name: date, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop 1:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~date_bool_drop_1).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "date_drop_1 = moma[date_bool_drop_1].index # rows to drop\n",
    "moma.drop(index=date_drop_1, inplace=True)\n",
    "\n",
    "print('After drop 1:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((moma['date'].str.count(date_pattern_drop_1) != 0).value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We'll discard values such as `early 1940s`, `1920s`, since this is a rather vague period and therefore has no value for our task."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "             date  date_pattern_drop_2\n",
      "0           1915?                 True\n",
      "1          1860s?                 True\n",
      "2          1880 ?                 True\n",
      "3           1920s                 True\n",
      "4       1880s-90s                 True\n",
      "5     1960s-1970s                 True\n",
      "6  1920s or 1930s                 True\n",
      "7      late 1950s                 True\n",
      "8     early 1940s                 True\n",
      "9    Early 1970's                 True\n",
      "\n",
      "moma values:\n",
      "early 1940s       152\n",
      "early 1930s        97\n",
      "1950s              84\n",
      "1960s              71\n",
      "1930s              63\n",
      "1920s              58\n",
      "1970s              54\n",
      "1901?              25\n",
      "1960s-1970s        12\n",
      "late 1950s         11\n",
      "1896?              11\n",
      "1990s               8\n",
      "early 1950s         8\n",
      "early 1960s         6\n",
      "1940s               6\n",
      "1870s               5\n",
      "late 1930s          4\n",
      "1980s               4\n",
      "1880s-90s           4\n",
      "late 1960s          4\n",
      "1850s               4\n",
      "1890s               3\n",
      "Late 1930s          3\n",
      "early 1970s         3\n",
      "late 1920s          3\n",
      "1960's              3\n",
      "Early 1950's        2\n",
      "1920s or 1930s      2\n",
      "1922?               2\n",
      "1956?               2\n",
      "1860s               2\n",
      "1840s               2\n",
      "1900?               2\n",
      "1930s or 1940s      2\n",
      "1910?               2\n",
      "1910s               2\n",
      "1970's              2\n",
      "1987?               1\n",
      "1880 ?              1\n",
      "1920's              1\n",
      "1908?               1\n",
      "1959?               1\n",
      "late 1850s          1\n",
      "1927?               1\n",
      "1915?               1\n",
      "Early 1960s         1\n",
      "1950s-1960s         1\n",
      "1860s or 70s        1\n",
      "1855?               1\n",
      "1879?               1\n",
      "late 1970's         1\n",
      "Early 1950s         1\n",
      "1880s               1\n",
      "Early 1970's        1\n",
      "1903?               1\n",
      "1969?               1\n",
      "early 1900s         1\n",
      "1860s?              1\n",
      "early 1980s         1\n",
      "1963?               1\n",
      "1930?               1\n",
      "1964?               1\n",
      "1929?               1\n",
      "late 1970s          1\n",
      "late 1940s          1\n",
      "1907?               1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 757\n"
     ]
    }
   ],
   "source": [
    "date_pattern_drop_2 = (r'^(?:early|late)?\\s?[0-2]\\d{3}\\'?(?:s|\\s?\\?|s\\?)'\n",
    "                         '(?:(?:\\-|\\sor\\s)(?:[0-2]\\d)?\\d{2}\\'?(?:s|\\s?\\?|s\\?))?$'\n",
    "                      )\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['1915?',\n",
    "                          '1860s?',\n",
    "                          '1880 ?',\n",
    "                          '1920s',\n",
    "                          '1880s-90s',\n",
    "                          '1960s-1970s',\n",
    "                          '1920s or 1930s',\n",
    "                          'late 1950s',\n",
    "                          'early 1940s',\n",
    "                          'Early 1970\\'s'\n",
    "                         ], columns=['date'])\n",
    "date_test['date_pattern_drop_2'] = date_test['date'].str.contains(date_pattern_drop_2, flags=re.I)\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_drop_2 = moma['date'].str.contains(date_pattern_drop_2, flags=re.I) # bool mask to drop\n",
    "\n",
    "# Inspect values\n",
    "pd.set_option('display.max_rows', 80) # increase the number of rows to display\n",
    "print('moma values:', moma.loc[date_bool_drop_2, 'date'].value_counts(dropna=False), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_drop_2.sum()))\n",
    "pd.reset_option('display.max_rows') # reset the number of rows to display to default"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop 2:\n",
      "total: 118253\n",
      "True     117496\n",
      "False       757\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After drop 2:\n",
      "total: 117496\n",
      "True    117496\n",
      "Name: date, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop 2:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~date_bool_drop_2).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "date_drop_2 = moma[date_bool_drop_2].index # rows to drop\n",
    "moma.drop(index=date_drop_2, inplace=True)\n",
    "\n",
    "print('After drop 2:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~moma['date'].str.contains(date_pattern_drop_2, flags=re.I)).value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "And such as `Before 1900`, `After 1933`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "           date  date_pattern_drop_3\n",
      "0   Before 1900                 True\n",
      "1  Before 1900?                 True\n",
      "2    After 1933                 True\n",
      "3    after 1891                 True\n",
      "\n",
      "moma values:\n",
      "Before 1900     177\n",
      "After 1933       62\n",
      "after 1891       34\n",
      "After 1924       16\n",
      "after 1938        9\n",
      "After 1929        8\n",
      "after 1888        6\n",
      "Before 1952       5\n",
      "after 1900        5\n",
      "Before 1899       4\n",
      "Before 1941       4\n",
      "Before 1948       3\n",
      "before 1927       3\n",
      "after 1910        2\n",
      "Before 1955       2\n",
      "after 1890        2\n",
      "Before 1910       2\n",
      "Before 1946       2\n",
      "Before 1900?      2\n",
      "before 1933       2\n",
      "Before 1975       2\n",
      "Before 1959       2\n",
      "before 1930       2\n",
      "After 1959        2\n",
      "Before 1979       1\n",
      "Before 1870       1\n",
      "Before 1931       1\n",
      "After 1925        1\n",
      "Before 1961       1\n",
      "before 1929       1\n",
      "after 1962        1\n",
      "After 1957        1\n",
      "before 1924       1\n",
      "Before 1929       1\n",
      "Before 1980       1\n",
      "Before 1949       1\n",
      "before 1887       1\n",
      "Before 1960       1\n",
      "before 1985       1\n",
      "Before 1935       1\n",
      "Before 1908       1\n",
      "Before 1954       1\n",
      "before 1943       1\n",
      "before 1971       1\n",
      "Before 1934       1\n",
      "after 1923        1\n",
      "Before 1933       1\n",
      "After 1954        1\n",
      "After 1852        1\n",
      "after 1895        1\n",
      "Before 1977       1\n",
      "Before 1932       1\n",
      "before 1928       1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 387\n"
     ]
    }
   ],
   "source": [
    "date_pattern_drop_3 = r'^(?:before|after)\\s?[0-2]\\d{3}\\s?\\??$'\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['Before 1900',\n",
    "                          'Before 1900?',\n",
    "                          'After 1933',\n",
    "                          'after 1891'\n",
    "                         ], columns=['date'])\n",
    "date_test['date_pattern_drop_3'] = date_test['date'].str.contains(date_pattern_drop_3, flags=re.I)\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_drop_3 = moma['date'].str.contains(date_pattern_drop_3, flags=re.I) # bool mask to drop\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_drop_3, 'date'].value_counts(dropna=False), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_drop_3.sum()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop 3:\n",
      "total: 117496\n",
      "True     117109\n",
      "False       387\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After drop 3:\n",
      "total: 117109\n",
      "True    117109\n",
      "Name: date, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop 3:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~date_bool_drop_3).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "date_drop_3 = moma[date_bool_drop_3].index # rows to drop\n",
    "moma.drop(index=date_drop_3, inplace=True)\n",
    "\n",
    "print('After drop 3:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~moma['date'].str.contains(date_pattern_drop_3, flags=re.I)).value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "As well as the rows with an indistinct year such as `1898 or earlier`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "              date  date_pattern_drop_4\n",
      "0  1898 or earlier                 True\n",
      "1  1898 or before?                 True\n",
      "\n",
      "moma values:\n",
      "1899 or before     25\n",
      "1910 or earlier    14\n",
      "1910 or before      6\n",
      "1939 or before      3\n",
      "1898 or earlier     2\n",
      "1898 or before?     2\n",
      "1853 or earlier     1\n",
      "1911 or after       1\n",
      "1931 or after       1\n",
      "1931 or earlier     1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 56\n"
     ]
    }
   ],
   "source": [
    "date_pattern_drop_4 = r'^[0-2]\\d{3}\\sor\\s(?:before|after|earlier)\\??$'\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['1898 or earlier',\n",
    "                          '1898 or before?'\n",
    "                         ], columns=['date'])\n",
    "date_test['date_pattern_drop_4'] = date_test['date'].str.contains(date_pattern_drop_4, flags=re.I)\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_drop_4 = moma['date'].str.contains(date_pattern_drop_4, flags=re.I) # bool mask to drop\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_drop_4, 'date'].value_counts(dropna=False), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_drop_4.sum()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop 4:\n",
      "total: 117109\n",
      "True     117053\n",
      "False        56\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After drop 4:\n",
      "total: 117053\n",
      "True    117053\n",
      "Name: date, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop 4:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~date_bool_drop_4).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "date_drop_4 = moma[date_bool_drop_4].index # rows to drop\n",
    "moma.drop(index=date_drop_4, inplace=True)\n",
    "\n",
    "print('After drop 4:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~moma['date'].str.contains(date_pattern_drop_4, flags=re.I)).value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "For some artworks, the years of publication are specified instead of the years of creation (`published 1965`, `published April 1898`). We'll remove these data from the dataset."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                                       date  date_pattern_drop_5\n",
      "0                            published 1965                 True\n",
      "1                            Published 1946                 True\n",
      "2                      published April 1898                 True\n",
      "3       newspaper published May 15-16, 1999                 True\n",
      "4  Published 1944 Prints executed 1915-1930                False\n",
      "\n",
      "moma values:\n",
      "published 1942                            25\n",
      "published April 1898                       5\n",
      "published November 1897                    4\n",
      "published October 1897                     4\n",
      "published December 1897                    3\n",
      "                                          ..\n",
      "newspaper published August 23-29, 2004     1\n",
      "newspaper published May 5, 2000            1\n",
      "published January 1985                     1\n",
      "newspaper published November 4, 2000       1\n",
      "newspaper published July 25, 1995          1\n",
      "Name: date, Length: 296, dtype: int64\n",
      "\n",
      "Matched: 350\n"
     ]
    }
   ],
   "source": [
    "date_pattern_drop_5 = r'(?!.*prints executed.*)^(?:newspapers?\\s)?(?:published.*)'\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['published 1965',\n",
    "                          'Published 1946',\n",
    "                          'published April 1898',\n",
    "                          'newspaper published May 15-16, 1999',\n",
    "                          'Published 1944 Prints executed 1915-1930' # must be False (we'll explore this later)\n",
    "                         ], columns=['date'])\n",
    "date_test['date_pattern_drop_5'] = date_test['date'].str.contains(date_pattern_drop_5, flags=re.I)\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_drop_5 = moma['date'].str.contains(date_pattern_drop_5, flags=re.I) # bool mask to drop\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_drop_5, 'date'].value_counts(dropna=False), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_drop_5.sum()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop 5:\n",
      "total: 117053\n",
      "True     116703\n",
      "False       350\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After drop 5:\n",
      "total: 116703\n",
      "True    116703\n",
      "Name: date, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop 5:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~date_bool_drop_5).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "date_drop_5 = moma[date_bool_drop_5].index # rows to drop\n",
    "moma.drop(index=date_drop_5, inplace=True)\n",
    "\n",
    "print('After drop 5:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~moma['date'].str.contains(date_pattern_drop_5, flags=re.I)).value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Let's distinguish three groups among the remaining values:\n",
    "\n",
    "- Year or range of years followed by additional information, for instance:\n",
    "    - year of printing `(1964, printed 1992)`,\n",
    "    - years of assembly `(1961, assembled 1964-65)`.  \n",
    "\n",
    "- Year or range of years specified after `executed`:\n",
    "    - `(1922, executed 1920-21)`,\n",
    "    - for prints `(Print executed 1936)`.  \n",
    "\n",
    "- Year or range of years with detailed information such as season, month, date, place, etc., such as:\n",
    "    - `September 29-October 24, 1967`,\n",
    "    - `August 5, 1877-June 22, 1894`,\n",
    "    - `Fontainebleau, summer 1921`.\n",
    "\n",
    "\n",
    "We'll consider each case separately.\n",
    "\n",
    "In *the first case* we'll do the following:\n",
    "\n",
    "- Replace the secondary words with placeholder `updated` for convenience.\n",
    "- Extract the year or years of creation.\n",
    "- Store them in the additional columns `year_1` and `year_2` of the `moma` dataframe."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                         date year_1 year_2\n",
      "0                        1896   1896    NaN\n",
      "1                   1941-1948   1941   1948\n",
      "2                     1969-70   1969     70\n",
      "3           1965 printed 2014   1965    NaN\n",
      "4          1964, printed 1992   1964    NaN\n",
      "5       2000-01, printed 2007   2000     01\n",
      "6         1973 published 1974   1973    NaN\n",
      "7        1941, published 1943   1941    NaN\n",
      "8        1975 Published 1976.   1975    NaN\n",
      "9     1947-49, published 1949   1947     49\n",
      "10  1918, published 1922-1923   1918    NaN\n",
      "11    1961, assembled 1964-65   1961    NaN\n",
      "12        1969, realized 1973   1969    NaN\n",
      "13          1983, signed 2007   1983    NaN\n",
      "14       1945, reprinted 1990   1945    NaN\n",
      "15   1961, reconstructed 1981   1961    NaN\n",
      "16      1963, fabricated 1975   1963    NaN\n",
      "17        1985, released 1990   1985    NaN\n",
      "18      1944, printed in 1967   1944    NaN\n",
      "19     1966 repainted in 1990   1966    NaN\n",
      "20  1950-52 manufactured 1955   1950     52\n",
      "21               1950-55-1980   1950     55\n",
      "\n",
      "moma values:\n",
      "1963-66, published 1966    1\n",
      "1953-1959                  1\n",
      "1964-73                    1\n",
      "1936, published 1938       1\n",
      "1983-2002                  1\n",
      "1976-82                    1\n",
      "1910-1915                  1\n",
      "1960, assembled 1976       1\n",
      "1956-59                    1\n",
      "1949-50, printed 1966      1\n",
      "1962-80, assembled 1980    1\n",
      "1958-87                    1\n",
      "1926-27 cast 1976          1\n",
      "2001-2008                  1\n",
      "1854-58                    1\n",
      "1912, published 1921       1\n",
      "1893-1931                  1\n",
      "1881-86                    1\n",
      "1960-62, assembled 1965    1\n",
      "1967, printed in 1968      1\n",
      "1963-1978                  1\n",
      "1944 cast 1954             1\n",
      "1898, published 1918       1\n",
      "1974-82                    1\n",
      "1945, printed 1980         1\n",
      "1949, printed 1980         1\n",
      "1961-2010                  1\n",
      "1986-88                    1\n",
      "1969, published 1976       1\n",
      "1915 published 1918        1\n",
      "1902-09                    1\n",
      "1882-84                    1\n",
      "1897, printed 1950         1\n",
      "1928-50                    1\n",
      "1966-1980                  1\n",
      "1943-49                    1\n",
      "1923-27                    1\n",
      "1966 repainted in 1990     1\n",
      "1938-39 cast 1959          1\n",
      "1948 reprinted 1990        1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 110718\n"
     ]
    }
   ],
   "source": [
    "date_updated_replace = (r'(?:published|repainted\\sin|printed\\sin|printed|assembled|'\n",
    "                         'realized|signed|reprinted|reconstructed|fabricated|'\n",
    "                         'released|cast|arranged|manufactured)'\n",
    "                       ) # keys to replace with placeholder\n",
    "date_pattern_1 = (r'^(?P<year_1>[0-2]\\d{3})'\n",
    "                   '(?:\\-(?P<year_2>(?:[0-2]\\d)?\\d{2}))?'\n",
    "                   '(?:,?(?:\\supdated|\\-)\\s?[0-2]\\d{3}(?:\\-(?:[0-2]\\d)?\\d{2})?)?s?\\.?$'\n",
    "                 )\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['1896',\n",
    "                          '1941-1948',\n",
    "                          '1969-70',\n",
    "                          '1965 printed 2014',\n",
    "                          '1964, printed 1992',\n",
    "                          '2000-01, printed 2007',\n",
    "                          '1973 published 1974',\n",
    "                          '1941, published 1943',\n",
    "                          '1975 Published 1976.',\n",
    "                          '1947-49, published 1949',\n",
    "                          '1918, published 1922-1923',\n",
    "                          '1961, assembled 1964-65',\n",
    "                          '1969, realized 1973',\n",
    "                          '1983, signed 2007',\n",
    "                          '1945, reprinted 1990',\n",
    "                          '1961, reconstructed 1981',\n",
    "                          '1963, fabricated 1975',\n",
    "                          '1985, released 1990',\n",
    "                          '1944, printed in 1967',\n",
    "                          '1966 repainted in 1990',\n",
    "                          '1950-52 manufactured 1955',\n",
    "                          '1950-55-1980'\n",
    "                         ], columns=['date'])\n",
    "date_test[['year_1', 'year_2']] = (date_test['date'].str.replace(date_updated_replace, 'updated', flags=re.I)\n",
    "                                                    .str.extract(date_pattern_1, flags=re.I)\n",
    "                                  )\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_1 = (moma['date'].str.replace(date_updated_replace, 'updated', flags=re.I)\n",
    "                           .str.match(date_pattern_1, flags=re.I)\n",
    "              ) # bool mask to extract the years\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_1, 'date'].value_counts(dropna=False).tail(40), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_1.sum()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 45,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before extract 1:\n",
      "total: 116703\n",
      "True     110718\n",
      "False      5985\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After extract 1:\n",
      "          date  year_1 year_2\n",
      "count   116703  110718  20104\n",
      "unique    6236     195    236\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>date</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>1896</td>\n",
       "      <td>1896</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>1987</td>\n",
       "      <td>1987</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>1903</td>\n",
       "      <td>1903</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>1980</td>\n",
       "      <td>1980</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>1903</td>\n",
       "      <td>1903</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>1976-77</td>\n",
       "      <td>1976</td>\n",
       "      <td>77</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>1976-77</td>\n",
       "      <td>1976</td>\n",
       "      <td>77</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>1976-77</td>\n",
       "      <td>1976</td>\n",
       "      <td>77</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "      date year_1 year_2\n",
       "0     1896   1896    NaN\n",
       "1     1987   1987    NaN\n",
       "2     1903   1903    NaN\n",
       "3     1980   1980    NaN\n",
       "4     1903   1903    NaN\n",
       "5  1976-77   1976     77\n",
       "6  1976-77   1976     77\n",
       "7  1976-77   1976     77"
      ]
     },
     "execution_count": 45,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "print('Before extract 1:')\n",
    "# Total number of rows\n",
    "print('total:', moma.shape[0])\n",
    "# Number of rows matching the pattern (True) and the rest (False)\n",
    "print(date_bool_1.value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Extract\n",
    "moma.loc[date_bool_1, ['year_1', 'year_2']] = (moma.loc[date_bool_1, 'date']\n",
    "                                                   .str.replace(date_updated_replace, 'updated', flags=re.I)\n",
    "                                                   .str.extract(date_pattern_1, flags=re.I)\n",
    "                                              )\n",
    "\n",
    "# Inspect values\n",
    "print('After extract 1:', moma[['date', 'year_1', 'year_2']].describe().loc[['count', 'unique']], sep='\\n', end='\\n\\n')\n",
    "moma.loc[date_bool_1, ['date', 'year_1', 'year_2']].head(8)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We have extracted most of the data in the `Date` column (94.9%)!\n",
    "\n",
    "Let's move on to *the second case* (that is, `executed`)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 46,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "Illustrated Book    630\n",
       "Print                11\n",
       "Periodical            2\n",
       "Name: classification, dtype: int64"
      ]
     },
     "execution_count": 46,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "(moma.loc[moma['date'].str.contains(r'print executed', flags=re.I), 'classification']\n",
    "     .value_counts()\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>title</th>\n",
       "      <th>artist</th>\n",
       "      <th>artist_bio</th>\n",
       "      <th>nationality</th>\n",
       "      <th>begin_date</th>\n",
       "      <th>end_date</th>\n",
       "      <th>gender</th>\n",
       "      <th>date</th>\n",
       "      <th>classification</th>\n",
       "      <th>department</th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>end_date_clean</th>\n",
       "      <th>gender_clean</th>\n",
       "      <th>nationality_clean</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>7951</th>\n",
       "      <td>Group in a Storm (Gruppe im Sturm)(plate 14) f...</td>\n",
       "      <td>Ernst Barlach</td>\n",
       "      <td>(German, 1870–1938)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1870)</td>\n",
       "      <td>(1938)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1920 print executed 1919</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1870</td>\n",
       "      <td>1938</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7961</th>\n",
       "      <td>Peasants Strolling (Bauerngang) from the illus...</td>\n",
       "      <td>Heinrich Campendonk</td>\n",
       "      <td>(German, 1889–1957)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1889)</td>\n",
       "      <td>(1957)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1920 print executed 1918</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1889</td>\n",
       "      <td>1957</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7962</th>\n",
       "      <td>Sick Girl (Krankes Mädchen) (plate 19) from th...</td>\n",
       "      <td>Erich Heckel</td>\n",
       "      <td>(German, 1883–1970)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1883)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1920 print executed 1913</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1883</td>\n",
       "      <td>1970</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7964</th>\n",
       "      <td>Woman Desired by Man (Weib vom Manne begehrt) ...</td>\n",
       "      <td>Max Pechstein</td>\n",
       "      <td>(German, 1881–1955)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1881)</td>\n",
       "      <td>(1955)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1920 print executed 1919</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1881</td>\n",
       "      <td>1955</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7965</th>\n",
       "      <td>Woman's Head (plate 22) from the illustrated b...</td>\n",
       "      <td>Karl Schmidt-Rottluff</td>\n",
       "      <td>(German, 1884–1976)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1884)</td>\n",
       "      <td>(1976)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1920 print executed in 1916</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1884</td>\n",
       "      <td>1976</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>100039</th>\n",
       "      <td>40 dessins de Picasso en marge du Buffon</td>\n",
       "      <td>Pablo Picasso</td>\n",
       "      <td>(Spanish, 1881–1973)</td>\n",
       "      <td>(Spanish)</td>\n",
       "      <td>(1881)</td>\n",
       "      <td>(1973)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>Paris, Berggruen, 1957. Print executed 1954-1957.</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1881</td>\n",
       "      <td>1973</td>\n",
       "      <td>male</td>\n",
       "      <td>spanish</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>100040</th>\n",
       "      <td>40 dessins de Picasso en marge du Buffon</td>\n",
       "      <td>Pablo Picasso</td>\n",
       "      <td>(Spanish, 1881–1973)</td>\n",
       "      <td>(Spanish)</td>\n",
       "      <td>(1881)</td>\n",
       "      <td>(1973)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>Paris, Berggruen, 1957. Print executed 1954-1957.</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1881</td>\n",
       "      <td>1973</td>\n",
       "      <td>male</td>\n",
       "      <td>spanish</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>102304</th>\n",
       "      <td>Members of the Brücke Artists' Group (Titelvig...</td>\n",
       "      <td>Ernst Ludwig Kirchner</td>\n",
       "      <td>(German, 1880–1938)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1880)</td>\n",
       "      <td>(1938)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1910 print executed 1907</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1880</td>\n",
       "      <td>1938</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>102305</th>\n",
       "      <td>PM (Passive Members) [PM (Passive Mitglieder)]...</td>\n",
       "      <td>Ernst Ludwig Kirchner</td>\n",
       "      <td>(German, 1880–1938)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1880)</td>\n",
       "      <td>(1938)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1910 print executed 1907</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1880</td>\n",
       "      <td>1938</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>102306</th>\n",
       "      <td>PM (Passive Members) [PM (Passive Mitglieder)]...</td>\n",
       "      <td>Ernst Ludwig Kirchner</td>\n",
       "      <td>(German, 1880–1938)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1880)</td>\n",
       "      <td>(1938)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1910 print executed 1908</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1880</td>\n",
       "      <td>1938</td>\n",
       "      <td>male</td>\n",
       "      <td>german</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>643 rows × 16 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    title                 artist            artist_bio nationality  \\\n",
       "7951    Group in a Storm (Gruppe im Sturm)(plate 14) f...          Ernst Barlach   (German, 1870–1938)    (German)   \n",
       "7961    Peasants Strolling (Bauerngang) from the illus...    Heinrich Campendonk   (German, 1889–1957)    (German)   \n",
       "7962    Sick Girl (Krankes Mädchen) (plate 19) from th...           Erich Heckel   (German, 1883–1970)    (German)   \n",
       "7964    Woman Desired by Man (Weib vom Manne begehrt) ...          Max Pechstein   (German, 1881–1955)    (German)   \n",
       "7965    Woman's Head (plate 22) from the illustrated b...  Karl Schmidt-Rottluff   (German, 1884–1976)    (German)   \n",
       "...                                                   ...                    ...                   ...         ...   \n",
       "100039           40 dessins de Picasso en marge du Buffon          Pablo Picasso  (Spanish, 1881–1973)   (Spanish)   \n",
       "100040           40 dessins de Picasso en marge du Buffon          Pablo Picasso  (Spanish, 1881–1973)   (Spanish)   \n",
       "102304  Members of the Brücke Artists' Group (Titelvig...  Ernst Ludwig Kirchner   (German, 1880–1938)    (German)   \n",
       "102305  PM (Passive Members) [PM (Passive Mitglieder)]...  Ernst Ludwig Kirchner   (German, 1880–1938)    (German)   \n",
       "102306  PM (Passive Members) [PM (Passive Mitglieder)]...  Ernst Ludwig Kirchner   (German, 1880–1938)    (German)   \n",
       "\n",
       "       begin_date end_date  gender                                               date    classification  \\\n",
       "7951       (1870)   (1938)  (Male)                           1920 print executed 1919  Illustrated Book   \n",
       "7961       (1889)   (1957)  (Male)                           1920 print executed 1918  Illustrated Book   \n",
       "7962       (1883)   (1970)  (Male)                           1920 print executed 1913  Illustrated Book   \n",
       "7964       (1881)   (1955)  (Male)                           1920 print executed 1919  Illustrated Book   \n",
       "7965       (1884)   (1976)  (Male)                        1920 print executed in 1916  Illustrated Book   \n",
       "...           ...      ...     ...                                                ...               ...   \n",
       "100039     (1881)   (1973)  (Male)  Paris, Berggruen, 1957. Print executed 1954-1957.  Illustrated Book   \n",
       "100040     (1881)   (1973)  (Male)  Paris, Berggruen, 1957. Print executed 1954-1957.  Illustrated Book   \n",
       "102304     (1880)   (1938)  (Male)                           1910 print executed 1907  Illustrated Book   \n",
       "102305     (1880)   (1938)  (Male)                           1910 print executed 1907  Illustrated Book   \n",
       "102306     (1880)   (1938)  (Male)                           1910 print executed 1908  Illustrated Book   \n",
       "\n",
       "               department  begin_date_clean  end_date_clean gender_clean nationality_clean year_1 year_2  \n",
       "7951    Drawings & Prints              1870            1938         male            german    NaN    NaN  \n",
       "7961    Drawings & Prints              1889            1957         male            german    NaN    NaN  \n",
       "7962    Drawings & Prints              1883            1970         male            german    NaN    NaN  \n",
       "7964    Drawings & Prints              1881            1955         male            german    NaN    NaN  \n",
       "7965    Drawings & Prints              1884            1976         male            german    NaN    NaN  \n",
       "...                   ...               ...             ...          ...               ...    ...    ...  \n",
       "100039  Drawings & Prints              1881            1973         male           spanish    NaN    NaN  \n",
       "100040  Drawings & Prints              1881            1973         male           spanish    NaN    NaN  \n",
       "102304  Drawings & Prints              1880            1938         male            german    NaN    NaN  \n",
       "102305  Drawings & Prints              1880            1938         male            german    NaN    NaN  \n",
       "102306  Drawings & Prints              1880            1938         male            german    NaN    NaN  \n",
       "\n",
       "[643 rows x 16 columns]"
      ]
     },
     "execution_count": 47,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Value examples\n",
    "(moma.loc[moma['date'].str.contains(r'print executed', flags=re.I)])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We need to extract the year when the print was created.\n",
    "\n",
    "Now let's process the values with `originals executed` etc."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 48,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                                   date year_1 year_2\n",
      "0                    1921 executed 1920   1920    NaN\n",
      "1                1922, executed 1920-21   1920     21\n",
      "2       1935 originals executed 1933-34   1933     34\n",
      "3        1935 drawings executed 1933-34   1933     34\n",
      "4     1922-23 original executed in 1922   1922    NaN\n",
      "5              1973-1974, executed 1973   1973    NaN\n",
      "6                   Print executed 1936   1936    NaN\n",
      "7                  Prints executed 1956   1956    NaN\n",
      "8          1950, print executed 1949-50   1949     50\n",
      "9       1972. Print executed 1971-1972.   1971   1972\n",
      "10           1962. Print executed 1960.   1960    NaN\n",
      "11           1944. Print executed 1942.   1942    NaN\n",
      "12      1927. Print executed 1925-1927.   1925   1927\n",
      "13          1963 Woodcuts executed 1907   1907    NaN\n",
      "14  1970. Sculpture executed 1968-1970.   1968   1970\n",
      "\n",
      "moma values:\n",
      "1898, prints executed 1897          1\n",
      "Prints executed 1953                1\n",
      "1950, prints executed 1945-1950     1\n",
      "1951. Prints executed 1948-1951.    1\n",
      "Print executed 1945                 1\n",
      "1950. prints executed 1949.         1\n",
      "1951. Print executed 1942.          1\n",
      "1953 original executed in 1932      1\n",
      "Print executed 1909-1917            1\n",
      "1918 prints executed 1917           1\n",
      "Print executed 1930-1932            1\n",
      "1828. Prints executed 1826-1827.    1\n",
      "1926 print executed 1921            1\n",
      "Print executed 1924-1925            1\n",
      "1962, prints executed 1948          1\n",
      "1922 prints executed 1921           1\n",
      "1983. Prints executed 1981-1983.    1\n",
      "1917 executed 1914                  1\n",
      "1944. Prints executed 1943.         1\n",
      "1962 Prints executed 1959-1961.     1\n",
      "1963. Prints executed 1949-1963.    1\n",
      "1968. Prints executed 1966-1967.    1\n",
      "1965. Prints executed 1964.         1\n",
      "1921. Prints executed 1920-1921.    1\n",
      "1968, prints executed 1967-68       1\n",
      "1920 print executed in 1916         1\n",
      "1931. Prints executed 1930.         1\n",
      "1920 print executed 1916            1\n",
      "Print executed 1960                 1\n",
      "1918 executed 1911                  1\n",
      "Prints executed 1954-1955           1\n",
      "1948. Prints executed 1942-1948.    1\n",
      "1947. Prints executed 1946-1947.    1\n",
      "1954, woodcut executed 1948         1\n",
      "1920 print executed 1918            1\n",
      "1927. Print executed 1926-1927.     1\n",
      "Print executed 1921                 1\n",
      "Prints executed 1956-1957           1\n",
      "1930, prints executed 1929          1\n",
      "1964 Prints executed 1963           1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 1110\n"
     ]
    }
   ],
   "source": [
    "date_char_trim = r'[\\.,]'\n",
    "date_pattern_2 = (r'^(?:[0-2]\\d{3})?(?:\\-\\d{2,4})?,?\\s?'\n",
    "                   '(?:originals?|drawings?|prints?|woodcuts?|sculpture?)?\\s?executed\\s(?:in\\s)?'\n",
    "                   '(?P<year_1>[0-2]\\d{3})(?:\\-(?P<year_2>(?:[0-2]\\d)?\\d{2}))?$'\n",
    "                 )\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['1921 executed 1920',\n",
    "                          '1922, executed 1920-21',\n",
    "                          '1935 originals executed 1933-34',\n",
    "                          '1935 drawings executed 1933-34',\n",
    "                          '1922-23 original executed in 1922',\n",
    "                          '1973-1974, executed 1973',\n",
    "                          'Print executed 1936',\n",
    "                          'Prints executed 1956',\n",
    "                          '1950, print executed 1949-50',\n",
    "                          '1972. Print executed 1971-1972.',\n",
    "                          '1962. Print executed 1960.',\n",
    "                          '1944. Print executed 1942.',\n",
    "                          '1927. Print executed 1925-1927.',\n",
    "                          '1963 Woodcuts executed 1907',\n",
    "                          '1970. Sculpture executed 1968-1970.'\n",
    "                         ], columns=['date'])\n",
    "date_test[['year_1', 'year_2']] = (date_test['date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                                                    .str.extract(date_pattern_2, flags=re.I)\n",
    "                                  )\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_2 = (moma['date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                           .str.match(date_pattern_2, flags=re.I)\n",
    "              ) # bool mask to extract the years\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_2, 'date'].value_counts(dropna=False).tail(40), sep='\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_2.sum()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before extract 2:\n",
      "total: 116703\n",
      "False    115593\n",
      "True       1110\n",
      "Name: date, dtype: int64\n",
      "\n",
      "After extract 2:\n",
      "          date  year_1 year_2\n",
      "count   116703  111828  20470\n",
      "unique    6236     195    238\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>date</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>11027</th>\n",
       "      <td>1944. Print executed 1938.</td>\n",
       "      <td>1938</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11029</th>\n",
       "      <td>1944. Print executed 1942.</td>\n",
       "      <td>1942</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11030</th>\n",
       "      <td>1944. Print executed 1942.</td>\n",
       "      <td>1942</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11031</th>\n",
       "      <td>1944. Print executed 1942.</td>\n",
       "      <td>1942</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11481</th>\n",
       "      <td>1963 Woodcuts executed 1907</td>\n",
       "      <td>1907</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11773</th>\n",
       "      <td>1962. Prints executed 1960-1962.</td>\n",
       "      <td>1960</td>\n",
       "      <td>1962</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11843</th>\n",
       "      <td>1918. Prints executed 1913.</td>\n",
       "      <td>1913</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12004</th>\n",
       "      <td>1921. Prints executed 1920-1921.</td>\n",
       "      <td>1920</td>\n",
       "      <td>1921</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12011</th>\n",
       "      <td>1981. Prints executed 1979-1981.</td>\n",
       "      <td>1979</td>\n",
       "      <td>1981</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12138</th>\n",
       "      <td>1919, executed 1918</td>\n",
       "      <td>1918</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                   date year_1 year_2\n",
       "11027        1944. Print executed 1938.   1938    NaN\n",
       "11029        1944. Print executed 1942.   1942    NaN\n",
       "11030        1944. Print executed 1942.   1942    NaN\n",
       "11031        1944. Print executed 1942.   1942    NaN\n",
       "11481       1963 Woodcuts executed 1907   1907    NaN\n",
       "11773  1962. Prints executed 1960-1962.   1960   1962\n",
       "11843       1918. Prints executed 1913.   1913    NaN\n",
       "12004  1921. Prints executed 1920-1921.   1920   1921\n",
       "12011  1981. Prints executed 1979-1981.   1979   1981\n",
       "12138               1919, executed 1918   1918    NaN"
      ]
     },
     "execution_count": 49,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "print('Before extract 2:')\n",
    "# Total number of rows\n",
    "print('total:', moma.shape[0])\n",
    "# Number of rows matching the pattern (True) and the rest (False)\n",
    "print(date_bool_2.value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Extract\n",
    "moma.loc[date_bool_2, ['year_1', 'year_2']] = (moma.loc[date_bool_2, 'date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                                                                            .str.extract(date_pattern_2, flags=re.I)\n",
    "                                              )\n",
    "\n",
    "# Inspect values\n",
    "print('After extract 2:', moma[['date', 'year_1', 'year_2']].describe().loc[['count', 'unique']], sep='\\n', end='\\n\\n')\n",
    "moma.loc[date_bool_2, ['date', 'year_1', 'year_2']][120:130]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Let's continue with *the third case*. \n",
    "\n",
    "\n",
    "We'll classify this group of values as special cases.  \n",
    "Since it is better for our task to drop data than to have questionable cleaned data, we will only clean up the values that we can say for sure that this is the year the artwork was created.\n",
    "\n",
    "For convenience, we'll first create a dictionary, with the patterns we are sure of. Then we'll extract the year or range of years the artwork was created from the values corresponding to the dictionary."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "                                date  date_pattern_special year_1 year_2_2 year_2_4 year_2\n",
      "0                       October 1977                  True   1977      NaN      NaN    NaN\n",
      "1                     August 15 1966                  True   1966      NaN      NaN    NaN\n",
      "2                   February 1, 1970                  True   1970      NaN      NaN    NaN\n",
      "3                      May 15, 1962.                  True   1962      NaN      NaN    NaN\n",
      "4                       11 July 1854                  True   1854      NaN      NaN    NaN\n",
      "5                      May-June 1991                  True   1991      NaN      NaN    NaN\n",
      "6                    May 13-19, 1970                  True   1970      NaN      NaN    NaN\n",
      "7                      May 2-10 1969                  True   1969      NaN      NaN    NaN\n",
      "8      September 29-October 24, 1967                  True   1967      NaN      NaN    NaN\n",
      "9       August 5, 1877-June 22, 1894                  True   1877      NaN     1894   1894\n",
      "10                      Dec. 9, 1954                  True   1954      NaN      NaN    NaN\n",
      "11                       Spring 1909                  True   1909      NaN      NaN    NaN\n",
      "12                        Early 1969                  True   1969      NaN      NaN    NaN\n",
      "13                    Late 1924-1925                  True   1924      NaN     1925   1925\n",
      "14                         Mars 1926                  True   1926      NaN      NaN    NaN\n",
      "15            Mars, 7 h. matin, 1925                  True   1925      NaN      NaN    NaN\n",
      "16                          Mai 1926                  True   1926      NaN      NaN    NaN\n",
      "17             Mai, 8 h. matin, 1925                  True   1925      NaN      NaN    NaN\n",
      "18                     Gallifa, 1956                  True   1956      NaN      NaN    NaN\n",
      "19                      Juillet 1921                  True   1921      NaN      NaN    NaN\n",
      "20        Fontainebleau, summer 1921                  True   1921      NaN      NaN    NaN\n",
      "21           Avril, 7 h. matin, 1925                  True   1925      NaN      NaN    NaN\n",
      "22            Juin, 7 h. matin, 1925                  True   1925      NaN      NaN    NaN\n",
      "23                    Kamakura, 1952                  True   1952      NaN      NaN    NaN\n",
      "24                         Août 1924                  True   1924      NaN      NaN    NaN\n",
      "25                      Decemer 1888                  True   1888      NaN      NaN    NaN\n",
      "26  Issy-les-Moulineaux, summer 1916                  True   1916      NaN      NaN    NaN\n",
      "27                 Paris, early 1899                  True   1899      NaN      NaN    NaN\n",
      "28           Paris, June - July 1914                  True   1914      NaN      NaN    NaN\n",
      "29             Paris, winter 1914-15                  True   1914       15      NaN     15\n",
      "30                Paris, spring 1908                  True   1908      NaN      NaN    NaN\n",
      "31                    Frankfurt 1920                  True   1920      NaN      NaN    NaN\n",
      "32                      Cannes, 1958                  True   1958      NaN      NaN    NaN\n",
      "33            Mars, 8 h. matin, 1925                  True   1925      NaN      NaN    NaN\n",
      "34                        circa 1980                  True   1980      NaN      NaN    NaN\n",
      "35                        Begun 1938                  True   1938      NaN      NaN    NaN\n",
      "36                       Berlin 1926                  True   1926      NaN      NaN    NaN\n",
      "37                       Meudon 1932                  True   1932      NaN      NaN    NaN\n",
      "38               Jupiter Island 1992                  True   1992      NaN      NaN    NaN\n",
      "39    Seasons of 1871, 1872 and 1873                 False   1873      NaN      NaN    NaN\n",
      "\n",
      "moma values:\n",
      "\n",
      "July 24-27, 1968            1\n",
      "April 21, 1893              1\n",
      "May 1968                    1\n",
      "September 1 1965            1\n",
      "July 1934                   1\n",
      "July 16, 1993               1\n",
      "August 11, 1893             1\n",
      "December 10-11, 1962        1\n",
      "July 27-August 5 1966       1\n",
      "January 19, 1986            1\n",
      "February 12-March 3 1966    1\n",
      "March 26-27 1963            1\n",
      "February 10, 1893           1\n",
      "June 2, 1964                1\n",
      "July 14-17, 1965            1\n",
      "Summer 1983                 1\n",
      "June 14-19, 1968            1\n",
      "August 14-24 1961           1\n",
      "May 1961                    1\n",
      "November 17, 1984           1\n",
      "Name: date, dtype: int64\n",
      "\n",
      "Matched: 3991\n"
     ]
    }
   ],
   "source": [
    "date_char_trim = r'[\\.,]'\n",
    "date_pattern_special = (r'^(?:\\d{,2}\\s)?(?:issy-les-moulineaux\\ssummer|fontainebleau\\ssummer|'\n",
    "                         'summer|spring|winter|autumn|fall|january|february|march|'\n",
    "                         'april|may|june|july|august|september|october|november|'\n",
    "                         'december|decemer|dec|begun|late|early|'\n",
    "                         'mars\\s7\\sh\\smatin|mars\\s8\\sh\\smatin|mars|'\n",
    "                         'avril\\s7\\sh\\smatin|avril|'\n",
    "                         'paris\\sjune\\s-\\sjuly|paris\\searly|paris\\swinter|paris\\sspring|paris|'\n",
    "                         'juin\\s7\\sh\\smatin|juin|'\n",
    "                         'mai\\s8\\sh\\smatin|mai|'\n",
    "                         'gallifa|juillet|kamakura|août|frankfurt|cannes|circa|hiver|bogotá|cuba|'\n",
    "                         'berlin|meudon|jupiter\\sisland|barcelona|cavalière|arles|germany|rome|'\n",
    "                         'horta\\sde\\ssan\\sjoan|collioure|new\\syork|saint\\srémy|issy-les-moulineaux)'\n",
    "                       ) # special cases\n",
    "date_pattern_3 = (r'^.*?(?P<year_1>[0-2]\\d{3})'\n",
    "                   '(?:\\-(?:(?P<year_2_2>[0-2]\\d)|.*(?P<year_2_4>[0-2]\\d{3})))?$'\n",
    "                 )\n",
    "\n",
    "# Test\n",
    "date_test = pd.DataFrame(['October 1977',\n",
    "                          'August 15 1966',\n",
    "                          'February 1, 1970',\n",
    "                          'May 15, 1962.',\n",
    "                          '11 July 1854',\n",
    "                          'May-June 1991',\n",
    "                          'May 13-19, 1970',\n",
    "                          'May 2-10 1969',\n",
    "                          'September 29-October 24, 1967',\n",
    "                          'August 5, 1877-June 22, 1894',\n",
    "                          'Dec. 9, 1954',\n",
    "                          'Spring 1909',\n",
    "                          'Early 1969',\n",
    "                          'Late 1924-1925',\n",
    "                          'Mars 1926',\n",
    "                          'Mars, 7 h. matin, 1925',\n",
    "                          'Mai 1926',\n",
    "                          'Mai, 8 h. matin, 1925',\n",
    "                          'Gallifa, 1956',\n",
    "                          'Juillet 1921',\n",
    "                          'Fontainebleau, summer 1921',\n",
    "                          'Avril, 7 h. matin, 1925',\n",
    "                          'Juin, 7 h. matin, 1925',\n",
    "                          'Kamakura, 1952',\n",
    "                          'Août 1924',\n",
    "                          'Decemer 1888',\n",
    "                          'Issy-les-Moulineaux, summer 1916',\n",
    "                          'Paris, early 1899',\n",
    "                          'Paris, June - July 1914',\n",
    "                          'Paris, winter 1914-15',\n",
    "                          'Paris, spring 1908',\n",
    "                          'Frankfurt 1920',\n",
    "                          'Cannes, 1958',\n",
    "                          'Mars, 8 h. matin, 1925',\n",
    "                          'circa 1980',\n",
    "                          'Begun 1938',\n",
    "                          'Berlin 1926',\n",
    "                          'Meudon 1932',\n",
    "                          'Jupiter Island 1992',\n",
    "                          'Seasons of 1871, 1872 and 1873' # must be False (we'll explore this later)\n",
    "                         ], columns=['date'])\n",
    "date_test['date_pattern_special'] = (date_test['date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                                                      .str.contains(date_pattern_special, flags=re.I)\n",
    "                                    )\n",
    "date_test[['year_1', 'year_2_2', 'year_2_4']] = (date_test['date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                                                                  .str.extract(date_pattern_3, flags=re.I)\n",
    "                                                )\n",
    "date_test['year_2'] = date_test['year_2_2'].fillna(date_test['year_2_4'])\n",
    "print(date_test, end='\\n\\n')\n",
    "\n",
    "date_bool_3 = (moma['date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                           .str.match(date_pattern_3, flags=re.I)\n",
    "               & moma['year_1'].isnull() # among the remaining rows\n",
    "               & moma['date'].str.replace(date_char_trim, '', flags=re.I)\n",
    "                             .str.contains(date_pattern_special, flags=re.I) # among the rows with special cases\n",
    "              ) # bool mask to extract the years\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:', moma.loc[date_bool_3, 'date'].value_counts(dropna=False).tail(20), sep='\\n\\n', end='\\n\\n')\n",
    "print('Matched: {}'.format(date_bool_3.sum()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 51,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before extract 3:\n",
      "total: 116703\n",
      "False    112712\n",
      "True       3991\n",
      "dtype: int64\n",
      "\n",
      "After extract 3:\n",
      "          date  year_1 year_2\n",
      "count   116703  115819  20651\n",
      "unique    6236     195    238\n",
      "\n"
     ]
    },
    {
     "data": {
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       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
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       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>date</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>7602</th>\n",
       "      <td>Late 1924-1925</td>\n",
       "      <td>1924</td>\n",
       "      <td>1925</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9749</th>\n",
       "      <td>April 1994 plate printed November 1983.</td>\n",
       "      <td>1983</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9758</th>\n",
       "      <td>December 1984</td>\n",
       "      <td>1984</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12550</th>\n",
       "      <td>December 24, 1898.</td>\n",
       "      <td>1898</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12577</th>\n",
       "      <td>February 5, 1898-October 22, 1898</td>\n",
       "      <td>1898</td>\n",
       "      <td>1898</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13216</th>\n",
       "      <td>June 16, 1898</td>\n",
       "      <td>1898</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13237</th>\n",
       "      <td>Paris, privately published, 1949.</td>\n",
       "      <td>1949</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13239</th>\n",
       "      <td>Paris, privately published, 1949.</td>\n",
       "      <td>1949</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                          date year_1 year_2\n",
       "7602                            Late 1924-1925   1924   1925\n",
       "9749   April 1994 plate printed November 1983.   1983    NaN\n",
       "9758                             December 1984   1984    NaN\n",
       "12550                       December 24, 1898.   1898    NaN\n",
       "12577        February 5, 1898-October 22, 1898   1898   1898\n",
       "13216                            June 16, 1898   1898    NaN\n",
       "13237        Paris, privately published, 1949.   1949    NaN\n",
       "13239        Paris, privately published, 1949.   1949    NaN"
      ]
     },
     "execution_count": 51,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "print('Before extract 3:')\n",
    "# Total number of rows\n",
    "print('total:', moma.shape[0])\n",
    "# Number of rows matching the pattern (True) and the rest (False)\n",
    "print(date_bool_3.value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Extract\n",
    "moma.loc[date_bool_3, ['year_1', 'year_2_2', 'year_2_4']] = (moma.loc[date_bool_3, 'date']\n",
    "                                                                 .str.replace(date_char_trim, '', flags=re.I)\n",
    "                                                                 .str.extract(date_pattern_3, flags=re.I)\n",
    "                                                            )\n",
    "moma.loc[date_bool_3, 'year_2'] = moma.loc[date_bool_3, 'year_2_2'].fillna(moma.loc[date_bool_3, 'year_2_4'])\n",
    "\n",
    "# Inspect values\n",
    "print('After extract 3:', moma[['date', 'year_1', 'year_2']].describe().loc[['count', 'unique']], sep='\\n', end='\\n\\n')\n",
    "moma.loc[date_bool_3, ['date', 'year_1', 'year_2']].head(8)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We have processed 3991 special cases. In general, we have cleaned up 115,819 values.\n",
    "\n",
    "Let's evaluate the remaining data in the `date` column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "rest count: 884\n",
      "rest percentage: 0.76\n",
      "rest count unique: 582\n",
      "total: 116703\n",
      "\n",
      "moma values:\n",
      "1893 reproduced drawings executed 1891-93                                       33\n",
      "Seasons of 1871, 1872 and 1873                                                  25\n",
      "1991 project begun 1989.                                                        25\n",
      "1929. Play produced and reproduced drawings executed 1907.                      24\n",
      "1947 reproduced drawing executed 1938                                           24\n",
      "book published, 1958                                                            15\n",
      "Book commissioned, but unpublished by Vollard Print executed 1922 Book publi    14\n",
      "2015-ongoing                                                                    12\n",
      "Probably 1914-21 not later than 1925                                            10\n",
      "1999-present                                                                     9\n",
      "first published 1883                                                             8\n",
      "Drawing on mylar executed 1967                                                   8\n",
      "Commissioned, but unpublished by Vollard Print executed 1922-1927.               8\n",
      "Book commissioned, but unpublished by Vollard Print executed 1926 Book publi     8\n",
      "1919 reproduced drawings executed 1908-09                                        7\n",
      "Book commissioned, but unpublished by Vollard Print executed 1927 Book publi     7\n",
      "Name: date, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "date_bool_rest = ~(date_bool_1 \n",
    "                    | date_bool_2\n",
    "                    | date_bool_3\n",
    "                  )\n",
    "# Or another way\n",
    "# date_bool_not_year_1 = moma['year_1'].isnull()\n",
    "\n",
    "# Statistics for the rest rows\n",
    "print('rest count: {}'.format(date_bool_rest.sum()))\n",
    "print('rest percentage: {}'.format(round(date_bool_rest.sum()*100/moma.shape[0], 2)))\n",
    "print('rest count unique: {}'.format(moma.loc[date_bool_rest, 'date'].value_counts(dropna=False).shape[0]))\n",
    "print('total: {}'.format(moma.shape[0]), end='\\n\\n')\n",
    "\n",
    "# Inspect values\n",
    "print('moma values:',\n",
    "      (moma.loc[date_bool_rest, 'date']\n",
    "           .value_counts(dropna=False)\n",
    "           .sort_values(ascending=False)\n",
    "           .head(16)\n",
    "      ),\n",
    "      sep='\\n'\n",
    "     )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Only 0.76% of questionable values remain in the `Data` column.\n",
    "\n",
    "We are currently looking for high-level results, so we will not waste time on the rest."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop rest:\n",
      "total: 116703\n",
      "True     115819\n",
      "False       884\n",
      "dtype: int64\n",
      "\n",
      "After drop rest:\n",
      "total: 115819\n",
      "True    115819\n",
      "Name: year_1, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop rest:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((~date_bool_rest).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "date_drop_rest = moma[date_bool_rest].index # rows to drop\n",
    "moma.drop(index=date_drop_rest, inplace=True)\n",
    "\n",
    "print('After drop rest:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print(moma['year_1'].notnull().value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Let's calculate the year the artwork was created."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "       year_1 year_2\n",
      "138156   1933   1934\n",
      "138157   1933   1934\n",
      "138158   1933   1934\n",
      "138159   1933   1934\n",
      "138160   1933   1934\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
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       "    .dataframe tbody tr th {\n",
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       "    }\n",
       "\n",
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>date_clean</th>\n",
       "      <th>age</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>1841</td>\n",
       "      <td>1896</td>\n",
       "      <td>55</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>1944</td>\n",
       "      <td>1987</td>\n",
       "      <td>43</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>1876</td>\n",
       "      <td>1903</td>\n",
       "      <td>27</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>1944</td>\n",
       "      <td>1980</td>\n",
       "      <td>36</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>1876</td>\n",
       "      <td>1903</td>\n",
       "      <td>27</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>1944</td>\n",
       "      <td>1976</td>\n",
       "      <td>32</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>1944</td>\n",
       "      <td>1976</td>\n",
       "      <td>32</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>1944</td>\n",
       "      <td>1976</td>\n",
       "      <td>32</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>1944</td>\n",
       "      <td>1976</td>\n",
       "      <td>32</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>1944</td>\n",
       "      <td>1976</td>\n",
       "      <td>32</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "   begin_date_clean  date_clean  age\n",
       "0              1841        1896   55\n",
       "1              1944        1987   43\n",
       "2              1876        1903   27\n",
       "3              1944        1980   36\n",
       "4              1876        1903   27\n",
       "5              1944        1976   32\n",
       "6              1944        1976   32\n",
       "7              1944        1976   32\n",
       "8              1944        1976   32\n",
       "9              1944        1976   32"
      ]
     },
     "execution_count": 54,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Fill in a two-digit year to four digits\n",
    "year_2_bool_two = moma['year_2'].str.len() == 2\n",
    "\n",
    "moma.loc[year_2_bool_two, 'year_2'] = (moma.loc[year_2_bool_two, 'year_1'].str[0:2] \n",
    "                                       + moma.loc[year_2_bool_two, 'year_2']\n",
    "                                      )\n",
    "\n",
    "# Inspect values\n",
    "print(moma.loc[year_2_bool_two, ['year_1', 'year_2']].tail())\n",
    "\n",
    "# Fill in NaN 'year_2' with 'year_1'\n",
    "moma['year_2'].fillna(value=moma['year_1'], inplace=True)\n",
    "# Cast years to int\n",
    "moma[['year_1', 'year_2']] = moma[['year_1', 'year_2']].astype(int)\n",
    "# Calculate date as average\n",
    "moma['date_clean'] = round((moma['year_2'] + moma['year_1']) / 2)\n",
    "moma['date_clean'] = moma['date_clean'].astype(int) # cast to int\n",
    "# Calculate age\n",
    "moma['age'] = moma['date_clean'] - moma['begin_date_clean']\n",
    "moma['age'] = moma['age'].astype(int) # cast to int\n",
    "# Inspect values\n",
    "moma[['begin_date_clean', 'date_clean', 'age']].head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We need to perform the following data validation:\n",
    "\n",
    "- `year_1 <= year_2` - valid range\n",
    "- `begin_date_clean < year_1`\n",
    "- for the death year:\n",
    "    - `year_2 <= end_date_clean` if `end_date_clean` is specified  \n",
    "    or\n",
    "    - `end_date_clean` may not be specified."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "invalid count: 1146\n",
      "invalid percentage: 0.99\n",
      "total: 115819\n",
      "\n",
      "moma invalid values:\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
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       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>title</th>\n",
       "      <th>artist</th>\n",
       "      <th>artist_bio</th>\n",
       "      <th>nationality</th>\n",
       "      <th>begin_date</th>\n",
       "      <th>end_date</th>\n",
       "      <th>gender</th>\n",
       "      <th>date</th>\n",
       "      <th>classification</th>\n",
       "      <th>department</th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>end_date_clean</th>\n",
       "      <th>gender_clean</th>\n",
       "      <th>nationality_clean</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "      <th>year_2_2</th>\n",
       "      <th>year_2_4</th>\n",
       "      <th>date_clean</th>\n",
       "      <th>age</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>951</th>\n",
       "      <td>Town Center, Seinajoki, Finland</td>\n",
       "      <td>Alvar Aalto</td>\n",
       "      <td>(Finnish, 1898–1976)</td>\n",
       "      <td>(Finnish)</td>\n",
       "      <td>(1898)</td>\n",
       "      <td>(1976)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1958-87</td>\n",
       "      <td>Architecture</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1898</td>\n",
       "      <td>1976</td>\n",
       "      <td>male</td>\n",
       "      <td>finnish</td>\n",
       "      <td>1958</td>\n",
       "      <td>1987</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1972</td>\n",
       "      <td>74</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3348</th>\n",
       "      <td>Canned Transistors SMS Card</td>\n",
       "      <td>Sam Lucente</td>\n",
       "      <td>(American, born 1958)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1958)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1955.</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1958</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>american</td>\n",
       "      <td>1955</td>\n",
       "      <td>1955</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1955</td>\n",
       "      <td>-3</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3430</th>\n",
       "      <td>Swiss Officers' Knife Champion (no. 5012)</td>\n",
       "      <td>Karl Elsener</td>\n",
       "      <td>(Swiss, 1860–1918)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1860)</td>\n",
       "      <td>(1918)</td>\n",
       "      <td>()</td>\n",
       "      <td>1968</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1860</td>\n",
       "      <td>1918</td>\n",
       "      <td>NaN</td>\n",
       "      <td>swiss</td>\n",
       "      <td>1968</td>\n",
       "      <td>1968</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1968</td>\n",
       "      <td>108</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3594</th>\n",
       "      <td>Rabbit Pattern Printed Fabric (no. 23583)</td>\n",
       "      <td>William Morris</td>\n",
       "      <td>(British, 1834–1896)</td>\n",
       "      <td>(British)</td>\n",
       "      <td>(1834)</td>\n",
       "      <td>(1896)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1938</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1834</td>\n",
       "      <td>1896</td>\n",
       "      <td>male</td>\n",
       "      <td>british</td>\n",
       "      <td>1938</td>\n",
       "      <td>1938</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1938</td>\n",
       "      <td>104</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3834</th>\n",
       "      <td>Danger, Don't Touch</td>\n",
       "      <td>Abram Games</td>\n",
       "      <td>(British, 1914–1996)</td>\n",
       "      <td>(British)</td>\n",
       "      <td>(1914)</td>\n",
       "      <td>(1996)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1900-1945</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1914</td>\n",
       "      <td>1996</td>\n",
       "      <td>male</td>\n",
       "      <td>british</td>\n",
       "      <td>1900</td>\n",
       "      <td>1945</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1922</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>135037</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Felix Akinniran Olunloyo</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1950-70</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1970</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>nigerian</td>\n",
       "      <td>1950</td>\n",
       "      <td>1970</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1960</td>\n",
       "      <td>-10</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>135038</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Felix Akinniran Olunloyo</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1950-70</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1970</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>nigerian</td>\n",
       "      <td>1950</td>\n",
       "      <td>1970</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1960</td>\n",
       "      <td>-10</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>135039</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Felix Akinniran Olunloyo</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1950-70</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1970</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>nigerian</td>\n",
       "      <td>1950</td>\n",
       "      <td>1970</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1960</td>\n",
       "      <td>-10</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>135040</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Felix Akinniran Olunloyo</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1950-70</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1970</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>nigerian</td>\n",
       "      <td>1950</td>\n",
       "      <td>1970</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1960</td>\n",
       "      <td>-10</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>135041</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Felix Akinniran Olunloyo</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(Nigerian)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1950-70</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1970</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>nigerian</td>\n",
       "      <td>1950</td>\n",
       "      <td>1970</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1960</td>\n",
       "      <td>-10</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>1146 rows × 20 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                            title                    artist             artist_bio nationality  \\\n",
       "951               Town Center, Seinajoki, Finland               Alvar Aalto   (Finnish, 1898–1976)   (Finnish)   \n",
       "3348                  Canned Transistors SMS Card               Sam Lucente  (American, born 1958)  (American)   \n",
       "3430    Swiss Officers' Knife Champion (no. 5012)              Karl Elsener     (Swiss, 1860–1918)     (Swiss)   \n",
       "3594    Rabbit Pattern Printed Fabric (no. 23583)            William Morris   (British, 1834–1896)   (British)   \n",
       "3834                          Danger, Don't Touch               Abram Games   (British, 1914–1996)   (British)   \n",
       "...                                           ...                       ...                    ...         ...   \n",
       "135037                                   Untitled  Felix Akinniran Olunloyo             (Nigerian)  (Nigerian)   \n",
       "135038                                   Untitled  Felix Akinniran Olunloyo             (Nigerian)  (Nigerian)   \n",
       "135039                                   Untitled  Felix Akinniran Olunloyo             (Nigerian)  (Nigerian)   \n",
       "135040                                   Untitled  Felix Akinniran Olunloyo             (Nigerian)  (Nigerian)   \n",
       "135041                                   Untitled  Felix Akinniran Olunloyo             (Nigerian)  (Nigerian)   \n",
       "\n",
       "       begin_date end_date  gender       date classification             department  begin_date_clean  end_date_clean  \\\n",
       "951        (1898)   (1976)  (Male)    1958-87   Architecture  Architecture & Design              1898            1976   \n",
       "3348       (1958)      (0)  (Male)      1955.         Design  Architecture & Design              1958               0   \n",
       "3430       (1860)   (1918)      ()       1968         Design  Architecture & Design              1860            1918   \n",
       "3594       (1834)   (1896)  (Male)       1938         Design  Architecture & Design              1834            1896   \n",
       "3834       (1914)   (1996)  (Male)  1900-1945         Design  Architecture & Design              1914            1996   \n",
       "...           ...      ...     ...        ...            ...                    ...               ...             ...   \n",
       "135037     (1970)      (0)  (Male)    1950-70     Photograph            Photography              1970               0   \n",
       "135038     (1970)      (0)  (Male)    1950-70     Photograph            Photography              1970               0   \n",
       "135039     (1970)      (0)  (Male)    1950-70     Photograph            Photography              1970               0   \n",
       "135040     (1970)      (0)  (Male)    1950-70     Photograph            Photography              1970               0   \n",
       "135041     (1970)      (0)  (Male)    1950-70     Photograph            Photography              1970               0   \n",
       "\n",
       "       gender_clean nationality_clean  year_1  year_2 year_2_2 year_2_4  date_clean  age  \n",
       "951            male           finnish    1958    1987      NaN      NaN        1972   74  \n",
       "3348           male          american    1955    1955      NaN      NaN        1955   -3  \n",
       "3430            NaN             swiss    1968    1968      NaN      NaN        1968  108  \n",
       "3594           male           british    1938    1938      NaN      NaN        1938  104  \n",
       "3834           male           british    1900    1945      NaN      NaN        1922    8  \n",
       "...             ...               ...     ...     ...      ...      ...         ...  ...  \n",
       "135037         male          nigerian    1950    1970      NaN      NaN        1960  -10  \n",
       "135038         male          nigerian    1950    1970      NaN      NaN        1960  -10  \n",
       "135039         male          nigerian    1950    1970      NaN      NaN        1960  -10  \n",
       "135040         male          nigerian    1950    1970      NaN      NaN        1960  -10  \n",
       "135041         male          nigerian    1950    1970      NaN      NaN        1960  -10  \n",
       "\n",
       "[1146 rows x 20 columns]"
      ]
     },
     "execution_count": 55,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "moma_bool_invalid = ~(\n",
    "                      (moma['year_1'] <= moma['year_2'])\n",
    "                      & (moma['begin_date_clean'] < moma['year_1'])\n",
    "                      & (((moma['end_date_clean'] >= moma['year_2']) & (moma['end_date_clean'] != 0))\n",
    "                         | (moma['end_date_clean'] == 0)\n",
    "                        )\n",
    "                     )\n",
    "\n",
    "# Statistics for the rest rows\n",
    "print('invalid count: {}'.format(moma_bool_invalid.sum()))\n",
    "print('invalid percentage: {}'.format(round(moma_bool_invalid.sum()*100/moma.shape[0], 2)))\n",
    "print('total:', moma.shape[0], end='\\n\\n')\n",
    "\n",
    "# Inspect values\n",
    "print('moma invalid values:')\n",
    "moma.loc[moma_bool_invalid]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We would like to drop the rows that don't pass the validation above."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop invalid:\n",
      "total: 115819\n",
      "True     114673\n",
      "False      1146\n",
      "dtype: int64\n",
      "\n",
      "After drop invalid:\n",
      "total: 114673\n",
      "True    114673\n",
      "dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop invalid:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of the valid (True) and invalid (False) rows\n",
    "print((~moma_bool_invalid).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "moma_drop_invalid = moma[moma_bool_invalid].index # rows to drop\n",
    "moma.drop(index=moma_drop_invalid, inplace=True)\n",
    "\n",
    "print('After drop invalid:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of valid (True) and invalid (False) rows\n",
    "print((\n",
    "       (moma['year_1'] <= moma['year_2'])\n",
    "       & (moma['begin_date_clean'] < moma['year_1'])\n",
    "       & (((moma['end_date_clean'] >= moma['year_2']) & (moma['end_date_clean'] != 0))\n",
    "          | (moma['end_date_clean'] == 0)\n",
    "         )\n",
    "      ).value_counts(dropna=False)\n",
    "     )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Let's take a look at the `age` column."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 57,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "count    114673.000000\n",
       "mean         44.959459\n",
       "std          15.104405\n",
       "min           1.000000\n",
       "25%          34.000000\n",
       "50%          42.000000\n",
       "75%          53.000000\n",
       "max         102.000000\n",
       "Name: age, dtype: float64"
      ]
     },
     "execution_count": 57,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "moma['age'].describe()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can see some suspicious outliers. For instance, it's unlikely that the artwork was created at the age of 1 year. What are these outliers?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 58,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Louise Bourgeois      1184\n",
      "Marc Chagall            31\n",
      "Hans Erni               12\n",
      "Will Barnet             11\n",
      "Carmen Herrera           9\n",
      "Frank Lloyd Wright       8\n",
      "Sylvia Sleigh            1\n",
      "June Wayne               1\n",
      "Pablo Picasso            1\n",
      "Manoel de Oliveira       1\n",
      "Name: artist, dtype: int64\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
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       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>title</th>\n",
       "      <th>artist</th>\n",
       "      <th>artist_bio</th>\n",
       "      <th>nationality</th>\n",
       "      <th>begin_date</th>\n",
       "      <th>end_date</th>\n",
       "      <th>gender</th>\n",
       "      <th>date</th>\n",
       "      <th>classification</th>\n",
       "      <th>department</th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>end_date_clean</th>\n",
       "      <th>gender_clean</th>\n",
       "      <th>nationality_clean</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "      <th>year_2_2</th>\n",
       "      <th>year_2_4</th>\n",
       "      <th>date_clean</th>\n",
       "      <th>age</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>109413</th>\n",
       "      <td>Three Sons, plate 14 of 24, from the series, S...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109406</th>\n",
       "      <td>Michel, plate 7 of 24, from the series, Self P...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109436</th>\n",
       "      <td>Untitled, plate 13 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107875</th>\n",
       "      <td>Untitled, plate 14 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109438</th>\n",
       "      <td>Untitled, plate 15 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107885</th>\n",
       "      <td>Untitled, plate 14 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107886</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107887</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107888</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>100324</th>\n",
       "      <td>Les Fleurs</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109437</th>\n",
       "      <td>Untitled, plate 14 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111747</th>\n",
       "      <td>Ma Maison</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111748</th>\n",
       "      <td>Ma Maison</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111749</th>\n",
       "      <td>Where Would We Be Without Each Other?</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107904</th>\n",
       "      <td>Lips</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111750</th>\n",
       "      <td>Where Would We Be Without Each Other?</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111751</th>\n",
       "      <td>Ma Famille</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111752</th>\n",
       "      <td>La Danse</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111753</th>\n",
       "      <td>La Danse</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111754</th>\n",
       "      <td>La Danse</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111755</th>\n",
       "      <td>The Swarm</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111756</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111757</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>103908</th>\n",
       "      <td>Have You Saved a Soul Today?</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>108650</th>\n",
       "      <td>The Nest</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111816</th>\n",
       "      <td>Self-Pity</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Textile</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107884</th>\n",
       "      <td>Untitled, plate 14 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107883</th>\n",
       "      <td>Untitled, plate 13 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109425</th>\n",
       "      <td>Untitled, plate 2 of 15, from the series, Natu...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107881</th>\n",
       "      <td>Untitled, plate 8 of 15, from the series, Natu...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>110174</th>\n",
       "      <td>Self Portrait</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>110189</th>\n",
       "      <td>Nature Study</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107876</th>\n",
       "      <td>Untitled, plate 9 of 15, from the series, Natu...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115482</th>\n",
       "      <td>Self Portrait</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115481</th>\n",
       "      <td>Marriage, plate 5 of 24, from the series, Self...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115480</th>\n",
       "      <td>La Nausée, plate 22 of 24, from the series, Se...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115479</th>\n",
       "      <td>Nature Study</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115478</th>\n",
       "      <td>Nature Study</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107882</th>\n",
       "      <td>Untitled, plate 9 of 15, from the series, Natu...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115477</th>\n",
       "      <td>Good Mother, plate 17 of 24, from the series, ...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107877</th>\n",
       "      <td>Untitled, plate 10 of 15, from the series, Nat...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107880</th>\n",
       "      <td>Untitled, plate 6 of 15, from the series, Natu...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107879</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107878</th>\n",
       "      <td>Untitled, plate 5 of 15, from the series, Natu...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2009</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2009</td>\n",
       "      <td>98</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107865</th>\n",
       "      <td>Les Fleurs</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109399</th>\n",
       "      <td>To Whom It May Concern</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2009-2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2009</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107866</th>\n",
       "      <td>Les Fleurs</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111210</th>\n",
       "      <td>Deuxième promenade (plate, page 12) from Les r...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111212</th>\n",
       "      <td>Quatrième promenade (plate, page 24) from Les ...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111215</th>\n",
       "      <td>Septième promenade (plate, page 42) from Les r...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107864</th>\n",
       "      <td>Les Fleurs</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111208</th>\n",
       "      <td>Frontispiece from Les rêveries du promeneur so...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111812</th>\n",
       "      <td>I Do</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>110778</th>\n",
       "      <td>Les rêveries du promeneur solitaire (Extraits)</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107651</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111211</th>\n",
       "      <td>Troisième promenade (plate, page 18) from Les ...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111213</th>\n",
       "      <td>Cinquième promenade (plate, page 30) from Les ...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107867</th>\n",
       "      <td>Les Fleurs</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111218</th>\n",
       "      <td>Dixièmem promenade (plate, page 60) from Les r...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113819</th>\n",
       "      <td>Untitled, no. 12 of 12, from the illustrated b...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113818</th>\n",
       "      <td>Untitled, no. 11 of 12, from the illustrated b...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111214</th>\n",
       "      <td>Sixième promenade (plate, page 36) from Les rê...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111209</th>\n",
       "      <td>Première promenade (plate, page 6) from Les rê...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113815</th>\n",
       "      <td>Untitled, no. 8 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113814</th>\n",
       "      <td>Untitled, no. 7 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113813</th>\n",
       "      <td>Untitled, no. 6 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113817</th>\n",
       "      <td>Untitled, no. 10 of 12, from the illustrated b...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113816</th>\n",
       "      <td>Untitled, no. 9 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113811</th>\n",
       "      <td>Untitled, no. 4 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113810</th>\n",
       "      <td>Untitled, no. 3 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113809</th>\n",
       "      <td>Untitled, no. 2 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113808</th>\n",
       "      <td>Untitled, no. 1 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111216</th>\n",
       "      <td>Huitième promenade (plate, page 48) from Les r...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111217</th>\n",
       "      <td>Neuvième promenade (plate, page 54) from Les r...</td>\n",
       "      <td>Hans Erni</td>\n",
       "      <td>(Swiss, 1909–2015)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1909)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>2008</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1909</td>\n",
       "      <td>2015</td>\n",
       "      <td>male</td>\n",
       "      <td>swiss</td>\n",
       "      <td>2008</td>\n",
       "      <td>2008</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2008</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113812</th>\n",
       "      <td>Untitled, no. 5 of 12, from the illustrated bo...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2010</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133436</th>\n",
       "      <td>Untitled from Verde y Negro</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133435</th>\n",
       "      <td>Untitled from Verde y Negro</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133434</th>\n",
       "      <td>Untitled from Verde y Negro</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133433</th>\n",
       "      <td>Untitled from Verde y Amarillo</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115010</th>\n",
       "      <td>The Strange Case of Angelica</td>\n",
       "      <td>Manoel de Oliveira</td>\n",
       "      <td>(Portuguese, 1908–2015)</td>\n",
       "      <td>(Portuguese)</td>\n",
       "      <td>(1908)</td>\n",
       "      <td>(2015)</td>\n",
       "      <td>()</td>\n",
       "      <td>2010</td>\n",
       "      <td>Film</td>\n",
       "      <td>Film</td>\n",
       "      <td>1908</td>\n",
       "      <td>2015</td>\n",
       "      <td>NaN</td>\n",
       "      <td>portuguese</td>\n",
       "      <td>2010</td>\n",
       "      <td>2010</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2010</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133431</th>\n",
       "      <td>Untitled from Verde y Amarillo</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133205</th>\n",
       "      <td>Equilibrio</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133203</th>\n",
       "      <td>Verde y Amarillo</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133432</th>\n",
       "      <td>Untitled from Verde y Amarillo</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133204</th>\n",
       "      <td>Verde y Negro</td>\n",
       "      <td>Carmen Herrera</td>\n",
       "      <td>(Cuban, born 1915)</td>\n",
       "      <td>(Cuban)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>2017</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>cuban</td>\n",
       "      <td>2017</td>\n",
       "      <td>2017</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2017</td>\n",
       "      <td>102</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    title              artist                          artist_bio  \\\n",
       "109413  Three Sons, plate 14 of 24, from the series, S...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "109406  Michel, plate 7 of 24, from the series, Self P...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "109436  Untitled, plate 13 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107875  Untitled, plate 14 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "109438  Untitled, plate 15 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107885  Untitled, plate 14 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107886                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107887                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107888                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "100324                                         Les Fleurs    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "109437  Untitled, plate 14 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111747                                          Ma Maison    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111748                                          Ma Maison    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111749              Where Would We Be Without Each Other?    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107904                                               Lips    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111750              Where Would We Be Without Each Other?    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111751                                         Ma Famille    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111752                                           La Danse    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111753                                           La Danse    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111754                                           La Danse    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111755                                          The Swarm    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111756                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111757                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "103908                       Have You Saved a Soul Today?    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "108650                                           The Nest    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111816                                          Self-Pity    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107884  Untitled, plate 14 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107883  Untitled, plate 13 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "109425  Untitled, plate 2 of 15, from the series, Natu...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107881  Untitled, plate 8 of 15, from the series, Natu...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "110174                                      Self Portrait    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "110189                                       Nature Study    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107876  Untitled, plate 9 of 15, from the series, Natu...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "115482                                      Self Portrait    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "115481  Marriage, plate 5 of 24, from the series, Self...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "115480  La Nausée, plate 22 of 24, from the series, Se...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "115479                                       Nature Study    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "115478                                       Nature Study    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107882  Untitled, plate 9 of 15, from the series, Natu...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "115477  Good Mother, plate 17 of 24, from the series, ...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107877  Untitled, plate 10 of 15, from the series, Nat...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107880  Untitled, plate 6 of 15, from the series, Natu...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107879                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107878  Untitled, plate 5 of 15, from the series, Natu...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107865                                         Les Fleurs    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "109399                             To Whom It May Concern    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "107866                                         Les Fleurs    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111210  Deuxième promenade (plate, page 12) from Les r...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "111212  Quatrième promenade (plate, page 24) from Les ...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "111215  Septième promenade (plate, page 42) from Les r...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "107864                                         Les Fleurs    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111208  Frontispiece from Les rêveries du promeneur so...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "111812                                               I Do    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "110778     Les rêveries du promeneur solitaire (Extraits)           Hans Erni                  (Swiss, 1909–2015)   \n",
       "107651                                           Untitled    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111211  Troisième promenade (plate, page 18) from Les ...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "111213  Cinquième promenade (plate, page 30) from Les ...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "107867                                         Les Fleurs    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111218  Dixièmem promenade (plate, page 60) from Les r...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "113819  Untitled, no. 12 of 12, from the illustrated b...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113818  Untitled, no. 11 of 12, from the illustrated b...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111214  Sixième promenade (plate, page 36) from Les rê...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "111209  Première promenade (plate, page 6) from Les rê...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "113815  Untitled, no. 8 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113814  Untitled, no. 7 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113813  Untitled, no. 6 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113817  Untitled, no. 10 of 12, from the illustrated b...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113816  Untitled, no. 9 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113811  Untitled, no. 4 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113810  Untitled, no. 3 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113809  Untitled, no. 2 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "113808  Untitled, no. 1 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "111216  Huitième promenade (plate, page 48) from Les r...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "111217  Neuvième promenade (plate, page 54) from Les r...           Hans Erni                  (Swiss, 1909–2015)   \n",
       "113812  Untitled, no. 5 of 12, from the illustrated bo...    Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "133436                        Untitled from Verde y Negro      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133435                        Untitled from Verde y Negro      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133434                        Untitled from Verde y Negro      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133433                     Untitled from Verde y Amarillo      Carmen Herrera                  (Cuban, born 1915)   \n",
       "115010                       The Strange Case of Angelica  Manoel de Oliveira             (Portuguese, 1908–2015)   \n",
       "133431                     Untitled from Verde y Amarillo      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133205                                         Equilibrio      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133203                                   Verde y Amarillo      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133432                     Untitled from Verde y Amarillo      Carmen Herrera                  (Cuban, born 1915)   \n",
       "133204                                      Verde y Negro      Carmen Herrera                  (Cuban, born 1915)   \n",
       "\n",
       "         nationality begin_date end_date    gender       date    classification         department  begin_date_clean  \\\n",
       "109413    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "109406    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "109436    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107875    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "109438    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107885    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107886    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107887    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107888    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "100324    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "109437    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111747    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111748    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111749    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107904    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111750    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111751    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111752    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111753    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111754    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111755    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111756    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111757    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "103908    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "108650    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "111816    (American)     (1911)   (2010)  (Female)       2009           Textile  Drawings & Prints              1911   \n",
       "107884    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107883    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "109425    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107881    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "110174    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "110189    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107876    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "115482    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "115481    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "115480    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "115479    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "115478    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107882    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "115477    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107877    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107880    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107879    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107878    (American)     (1911)   (2010)  (Female)       2009             Print  Drawings & Prints              1911   \n",
       "107865    (American)     (1911)   (2010)  (Female)       2010             Print  Drawings & Prints              1911   \n",
       "109399    (American)     (1911)   (2010)  (Female)  2009-2010  Illustrated Book  Drawings & Prints              1911   \n",
       "107866    (American)     (1911)   (2010)  (Female)       2010             Print  Drawings & Prints              1911   \n",
       "111210       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "111212       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "111215       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "107864    (American)     (1911)   (2010)  (Female)       2010             Print  Drawings & Prints              1911   \n",
       "111208       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "111812    (American)     (1911)   (2010)  (Female)       2010             Print  Drawings & Prints              1911   \n",
       "110778       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "107651    (American)     (1911)   (2010)  (Female)       2010             Print  Drawings & Prints              1911   \n",
       "111211       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "111213       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "107867    (American)     (1911)   (2010)  (Female)       2010             Print  Drawings & Prints              1911   \n",
       "111218       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "113819    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113818    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "111214       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "111209       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "113815    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113814    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113813    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113817    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113816    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113811    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113810    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113809    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "113808    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "111216       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "111217       (Swiss)     (1909)   (2015)    (Male)       2008  Illustrated Book  Drawings & Prints              1909   \n",
       "113812    (American)     (1911)   (2010)  (Female)       2010  Illustrated Book  Drawings & Prints              1911   \n",
       "133436       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133435       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133434       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133433       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "115010  (Portuguese)     (1908)   (2015)        ()       2010              Film               Film              1908   \n",
       "133431       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133205       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133203       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133432       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "133204       (Cuban)     (1915)      (0)  (Female)       2017             Print  Drawings & Prints              1915   \n",
       "\n",
       "        end_date_clean gender_clean nationality_clean  year_1  year_2 year_2_2 year_2_4  date_clean  age  \n",
       "109413            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "109406            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "109436            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107875            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "109438            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107885            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107886            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107887            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107888            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "100324            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "109437            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111747            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111748            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111749            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107904            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111750            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111751            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111752            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111753            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111754            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111755            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111756            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111757            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "103908            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "108650            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "111816            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107884            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107883            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "109425            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107881            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "110174            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "110189            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107876            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "115482            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "115481            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "115480            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "115479            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "115478            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107882            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "115477            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107877            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107880            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107879            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107878            2010       female          american    2009    2009      NaN      NaN        2009   98  \n",
       "107865            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "109399            2010       female          american    2009    2010      NaN      NaN        2010   99  \n",
       "107866            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "111210            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "111212            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "111215            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "107864            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "111208            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "111812            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "110778            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "107651            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "111211            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "111213            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "107867            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "111218            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "113819            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113818            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "111214            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "111209            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "113815            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113814            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113813            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113817            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113816            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113811            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113810            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113809            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "113808            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "111216            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "111217            2015         male             swiss    2008    2008      NaN      NaN        2008   99  \n",
       "113812            2010       female          american    2010    2010      NaN      NaN        2010   99  \n",
       "133436               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133435               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133434               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133433               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "115010            2015          NaN        portuguese    2010    2010      NaN      NaN        2010  102  \n",
       "133431               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133205               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133203               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133432               0       female             cuban    2017    2017      NaN      NaN        2017  102  \n",
       "133204               0       female             cuban    2017    2017      NaN      NaN        2017  102  "
      ]
     },
     "execution_count": 58,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pd.set_option('display.max_rows', 85) # increase the number of rows to display\n",
    "\n",
    "# Inspect values\n",
    "print(moma.loc[moma['age'] > 90, 'artist'].value_counts())\n",
    "moma[moma['age'] > 90].sort_values('age').tail(85)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 59,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "General Idea                      35\n",
      "Grapus                             3\n",
      "Hi Red Center                      2\n",
      "Gorgona artists group              1\n",
      "B. Tillmann                        1\n",
      "Grey Organisation                  1\n",
      "Robin Schwartz                     1\n",
      "Richard Pare                       1\n",
      "J.P. Sniadecki                     1\n",
      "Banana Equipment                   1\n",
      "Raúl Anguiano                      1\n",
      "Atelier Martine, Paris, France     1\n",
      "Hermine David                      1\n",
      "Sam Lucente                        1\n",
      "Name: artist, dtype: int64\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>title</th>\n",
       "      <th>artist</th>\n",
       "      <th>artist_bio</th>\n",
       "      <th>nationality</th>\n",
       "      <th>begin_date</th>\n",
       "      <th>end_date</th>\n",
       "      <th>gender</th>\n",
       "      <th>date</th>\n",
       "      <th>classification</th>\n",
       "      <th>department</th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>end_date_clean</th>\n",
       "      <th>gender_clean</th>\n",
       "      <th>nationality_clean</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "      <th>year_2_2</th>\n",
       "      <th>year_2_4</th>\n",
       "      <th>date_clean</th>\n",
       "      <th>age</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>2124</th>\n",
       "      <td>Printed Fabric</td>\n",
       "      <td>Atelier Martine, Paris, France</td>\n",
       "      <td>(1911–1930)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(1930)</td>\n",
       "      <td>()</td>\n",
       "      <td>1912-1913</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1911</td>\n",
       "      <td>1930</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1912</td>\n",
       "      <td>1913</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1912</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136750</th>\n",
       "      <td>Orgasm Energy Chart</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1970</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1970</td>\n",
       "      <td>1970</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1970</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>101220</th>\n",
       "      <td>News Flash! What Is the Communication Satellit...</td>\n",
       "      <td>Hi Red Center</td>\n",
       "      <td>(Japanese, 1963–1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1963)</td>\n",
       "      <td>(1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>1964</td>\n",
       "      <td>Print</td>\n",
       "      <td>Fluxus Collection</td>\n",
       "      <td>1963</td>\n",
       "      <td>1964</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1964</td>\n",
       "      <td>1964</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1964</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>131800</th>\n",
       "      <td>Bundle of Events from Fluxus 1</td>\n",
       "      <td>Hi Red Center</td>\n",
       "      <td>(Japanese, 1963–1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1963)</td>\n",
       "      <td>(1964)</td>\n",
       "      <td>()</td>\n",
       "      <td>1964, assembled 1976</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1963</td>\n",
       "      <td>1964</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1964</td>\n",
       "      <td>1964</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1964</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>63914</th>\n",
       "      <td>Mid-summer Meadow</td>\n",
       "      <td>Robin Schwartz</td>\n",
       "      <td>(American, born 1957)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1957)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1958</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1957</td>\n",
       "      <td>0</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1958</td>\n",
       "      <td>1958</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1958</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133087</th>\n",
       "      <td>Demolition</td>\n",
       "      <td>J.P. Sniadecki</td>\n",
       "      <td>(American, born 1979)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1979)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1980</td>\n",
       "      <td>Video</td>\n",
       "      <td>Film</td>\n",
       "      <td>1979</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>american</td>\n",
       "      <td>1980</td>\n",
       "      <td>1980</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1980</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136751</th>\n",
       "      <td>Looking Ahead</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95212</th>\n",
       "      <td>The 1970 Miss General Idea Pageant</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95213</th>\n",
       "      <td>Artist's Conception: Miss General Idea 1971</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136755</th>\n",
       "      <td>CIGARETTE BURN executed by Andy Warhol on Gran...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136756</th>\n",
       "      <td>Light On (Double Mirror)</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136757</th>\n",
       "      <td>Light On (Drive-in Theatre)</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136758</th>\n",
       "      <td>Untitled Drawing (Bondage)</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1971</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1971</td>\n",
       "      <td>1971</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1971</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136752</th>\n",
       "      <td>Gold-diggers of '84</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1972</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1972</td>\n",
       "      <td>1972</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1972</td>\n",
       "      <td>3</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6009</th>\n",
       "      <td>St. Prex</td>\n",
       "      <td>B. Tillmann</td>\n",
       "      <td>(Swiss, born 1947)</td>\n",
       "      <td>(Swiss)</td>\n",
       "      <td>(1947)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>()</td>\n",
       "      <td>1950</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1947</td>\n",
       "      <td>0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>swiss</td>\n",
       "      <td>1950</td>\n",
       "      <td>1950</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1950</td>\n",
       "      <td>3</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>56719</th>\n",
       "      <td>(Untitled)</td>\n",
       "      <td>Richard Pare</td>\n",
       "      <td>(British, born 1948)</td>\n",
       "      <td>(British)</td>\n",
       "      <td>(1948)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1952</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1948</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>british</td>\n",
       "      <td>1952</td>\n",
       "      <td>1952</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1952</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136759</th>\n",
       "      <td>Luxon V.B.: The 1984 Miss General Idea Pavilli...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1973</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1973</td>\n",
       "      <td>1973</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1973</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95214</th>\n",
       "      <td>Manipulating the Self</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1973</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1973</td>\n",
       "      <td>1973</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1973</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>61723</th>\n",
       "      <td>The Band Stand, Menton (Menton, le kiosque à m...</td>\n",
       "      <td>Hermine David</td>\n",
       "      <td>(French, 1886–1971)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1886)</td>\n",
       "      <td>(1971)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1890</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1886</td>\n",
       "      <td>1971</td>\n",
       "      <td>female</td>\n",
       "      <td>french</td>\n",
       "      <td>1890</td>\n",
       "      <td>1890</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1890</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136760</th>\n",
       "      <td>Art Metropole Letterhead</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1974</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1974</td>\n",
       "      <td>1974</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1974</td>\n",
       "      <td>5</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137886</th>\n",
       "      <td>2. The 1984 Miss General Idea Pageant: Voice Over</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137882</th>\n",
       "      <td>1. The Search for the Spirit of Miss General I...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137892</th>\n",
       "      <td>4. The 1984 Miss General Idea Pavillion: The 1...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137884</th>\n",
       "      <td>2. The 1984 Miss General Idea Pageant: The 198...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>136753</th>\n",
       "      <td>Censor Sunglasses</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137885</th>\n",
       "      <td>2. The 1984 Miss General Idea Pageant: Zoom Ou...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137891</th>\n",
       "      <td>3. Miss General Idea 1984: Miss General Idea 1984</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137893</th>\n",
       "      <td>4. The 1984 Miss General Idea Pavillion: Voice...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137883</th>\n",
       "      <td>1. The Search for the Spirit of Miss General I...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>121499</th>\n",
       "      <td>Album cover for De La Soul, 3 Feet High and Ri...</td>\n",
       "      <td>Grey Organisation</td>\n",
       "      <td>(British, 1983–1991)</td>\n",
       "      <td>(British)</td>\n",
       "      <td>(1983)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1989</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1983</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>british</td>\n",
       "      <td>1989</td>\n",
       "      <td>1989</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1989</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95218</th>\n",
       "      <td>Luxon Louvre (Ambiguity Without Contradiction)</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3351</th>\n",
       "      <td>Solid Logic Technology Module</td>\n",
       "      <td>Sam Lucente</td>\n",
       "      <td>(American, born 1958)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1958)</td>\n",
       "      <td>(0)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1964</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1958</td>\n",
       "      <td>0</td>\n",
       "      <td>male</td>\n",
       "      <td>american</td>\n",
       "      <td>1964</td>\n",
       "      <td>1964</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1964</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95216</th>\n",
       "      <td>The Dr. Brute Colonnade (Dominant Imagery)</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95217</th>\n",
       "      <td>The Dr. Brute Colonnade and Drop Ceiling Detail</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95219</th>\n",
       "      <td>Miss General Idea Glove Pattern (Form Follows ...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95220</th>\n",
       "      <td>Pavillion Construction Hoarding</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95221</th>\n",
       "      <td>Proposed Seating Arrangement (Form Follows Fic...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137895</th>\n",
       "      <td>5. Frame of Reference: Frame of Reference</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109072</th>\n",
       "      <td>Gorgona no. 8</td>\n",
       "      <td>Gorgona artists group</td>\n",
       "      <td>(Zagreb, Croatian 1961–1966)</td>\n",
       "      <td>(Croatian)</td>\n",
       "      <td>(1959)</td>\n",
       "      <td>(1966)</td>\n",
       "      <td>()</td>\n",
       "      <td>1965</td>\n",
       "      <td>Periodical</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1959</td>\n",
       "      <td>1966</td>\n",
       "      <td>NaN</td>\n",
       "      <td>croatian</td>\n",
       "      <td>1965</td>\n",
       "      <td>1965</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1965</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137894</th>\n",
       "      <td>4. The 1984 Miss General Idea Pavillion: Voice...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6124</th>\n",
       "      <td>ON Y VA</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1977</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1977</td>\n",
       "      <td>1977</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1977</td>\n",
       "      <td>7</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95222</th>\n",
       "      <td>General Idea: Search for the Spirit</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1976</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1976</td>\n",
       "      <td>1976</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1976</td>\n",
       "      <td>7</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95223</th>\n",
       "      <td>S/HE: The 1984 Miss General Idea Pageant No. 102</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1977</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1977</td>\n",
       "      <td>1977</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1977</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133545</th>\n",
       "      <td>4-021 The 1984 Miss General Idea Pavillion: No...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1977</td>\n",
       "      <td>Drawing</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1977</td>\n",
       "      <td>1977</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1977</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6642</th>\n",
       "      <td>\"VIVRE LE 14 JUILLET/ 1978\"</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1978</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1978</td>\n",
       "      <td>1978</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1978</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137887</th>\n",
       "      <td>2. The 1984 Miss General Idea Pageant: The Tyr...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1977</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1977</td>\n",
       "      <td>1977</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1977</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6638</th>\n",
       "      <td>Allez-Y De Ma Part</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1978</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1978</td>\n",
       "      <td>1978</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1978</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>131283</th>\n",
       "      <td>Gore-Tex Parka</td>\n",
       "      <td>Banana Equipment</td>\n",
       "      <td>(American, 1972–1980)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1972)</td>\n",
       "      <td>(1980)</td>\n",
       "      <td>()</td>\n",
       "      <td>1980</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1972</td>\n",
       "      <td>1980</td>\n",
       "      <td>NaN</td>\n",
       "      <td>american</td>\n",
       "      <td>1980</td>\n",
       "      <td>1980</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1980</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95224</th>\n",
       "      <td>General Idea: Ménage à Trois</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1978</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1978</td>\n",
       "      <td>1978</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1978</td>\n",
       "      <td>9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>95225</th>\n",
       "      <td>Glamour di General Idea</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1978</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1978</td>\n",
       "      <td>1978</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1978</td>\n",
       "      <td>9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>67412</th>\n",
       "      <td>Peasant of Puebla (Campesino de Puebla)</td>\n",
       "      <td>Raúl Anguiano</td>\n",
       "      <td>(Mexican, 1915–2006)</td>\n",
       "      <td>(Mexican)</td>\n",
       "      <td>(1915)</td>\n",
       "      <td>(2006)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1924</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1915</td>\n",
       "      <td>2006</td>\n",
       "      <td>male</td>\n",
       "      <td>mexican</td>\n",
       "      <td>1924</td>\n",
       "      <td>1924</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1924</td>\n",
       "      <td>9</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    title                          artist  \\\n",
       "2124                                       Printed Fabric  Atelier Martine, Paris, France   \n",
       "136750                                Orgasm Energy Chart                    General Idea   \n",
       "101220  News Flash! What Is the Communication Satellit...                   Hi Red Center   \n",
       "131800                     Bundle of Events from Fluxus 1                   Hi Red Center   \n",
       "63914                                   Mid-summer Meadow                  Robin Schwartz   \n",
       "133087                                         Demolition                  J.P. Sniadecki   \n",
       "136751                                      Looking Ahead                    General Idea   \n",
       "95212                  The 1970 Miss General Idea Pageant                    General Idea   \n",
       "95213         Artist's Conception: Miss General Idea 1971                    General Idea   \n",
       "136755  CIGARETTE BURN executed by Andy Warhol on Gran...                    General Idea   \n",
       "136756                           Light On (Double Mirror)                    General Idea   \n",
       "136757                        Light On (Drive-in Theatre)                    General Idea   \n",
       "136758                         Untitled Drawing (Bondage)                    General Idea   \n",
       "136752                                Gold-diggers of '84                    General Idea   \n",
       "6009                                             St. Prex                     B. Tillmann   \n",
       "56719                                          (Untitled)                    Richard Pare   \n",
       "136759  Luxon V.B.: The 1984 Miss General Idea Pavilli...                    General Idea   \n",
       "95214                               Manipulating the Self                    General Idea   \n",
       "61723   The Band Stand, Menton (Menton, le kiosque à m...                   Hermine David   \n",
       "136760                           Art Metropole Letterhead                    General Idea   \n",
       "137886  2. The 1984 Miss General Idea Pageant: Voice Over                    General Idea   \n",
       "137882  1. The Search for the Spirit of Miss General I...                    General Idea   \n",
       "137892  4. The 1984 Miss General Idea Pavillion: The 1...                    General Idea   \n",
       "137884  2. The 1984 Miss General Idea Pageant: The 198...                    General Idea   \n",
       "136753                                  Censor Sunglasses                    General Idea   \n",
       "137885  2. The 1984 Miss General Idea Pageant: Zoom Ou...                    General Idea   \n",
       "137891  3. Miss General Idea 1984: Miss General Idea 1984                    General Idea   \n",
       "137893  4. The 1984 Miss General Idea Pavillion: Voice...                    General Idea   \n",
       "137883  1. The Search for the Spirit of Miss General I...                    General Idea   \n",
       "121499  Album cover for De La Soul, 3 Feet High and Ri...               Grey Organisation   \n",
       "95218      Luxon Louvre (Ambiguity Without Contradiction)                    General Idea   \n",
       "3351                        Solid Logic Technology Module                     Sam Lucente   \n",
       "95216          The Dr. Brute Colonnade (Dominant Imagery)                    General Idea   \n",
       "95217     The Dr. Brute Colonnade and Drop Ceiling Detail                    General Idea   \n",
       "95219   Miss General Idea Glove Pattern (Form Follows ...                    General Idea   \n",
       "95220                     Pavillion Construction Hoarding                    General Idea   \n",
       "95221   Proposed Seating Arrangement (Form Follows Fic...                    General Idea   \n",
       "137895          5. Frame of Reference: Frame of Reference                    General Idea   \n",
       "109072                                      Gorgona no. 8           Gorgona artists group   \n",
       "137894  4. The 1984 Miss General Idea Pavillion: Voice...                    General Idea   \n",
       "6124                                              ON Y VA                          Grapus   \n",
       "95222                 General Idea: Search for the Spirit                    General Idea   \n",
       "95223    S/HE: The 1984 Miss General Idea Pageant No. 102                    General Idea   \n",
       "133545  4-021 The 1984 Miss General Idea Pavillion: No...                    General Idea   \n",
       "6642                          \"VIVRE LE 14 JUILLET/ 1978\"                          Grapus   \n",
       "137887  2. The 1984 Miss General Idea Pageant: The Tyr...                    General Idea   \n",
       "6638                                   Allez-Y De Ma Part                          Grapus   \n",
       "131283                                     Gore-Tex Parka                Banana Equipment   \n",
       "95224                        General Idea: Ménage à Trois                    General Idea   \n",
       "95225                             Glamour di General Idea                    General Idea   \n",
       "67412             Peasant of Puebla (Campesino de Puebla)                   Raúl Anguiano   \n",
       "\n",
       "                          artist_bio nationality begin_date end_date    gender                  date  \\\n",
       "2124                     (1911–1930)          ()     (1911)   (1930)        ()             1912-1913   \n",
       "136750         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1970   \n",
       "101220         (Japanese, 1963–1964)          ()     (1963)   (1964)        ()                  1964   \n",
       "131800         (Japanese, 1963–1964)          ()     (1963)   (1964)        ()  1964, assembled 1976   \n",
       "63914          (American, born 1957)  (American)     (1957)      (0)  (Female)                  1958   \n",
       "133087         (American, born 1979)  (American)     (1979)      (0)    (Male)                  1980   \n",
       "136751         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "95212          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "95213          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "136755         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "136756         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "136757         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "136758         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1971   \n",
       "136752         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1972   \n",
       "6009              (Swiss, born 1947)     (Swiss)     (1947)      (0)        ()                  1950   \n",
       "56719           (British, born 1948)   (British)     (1948)      (0)    (Male)                  1952   \n",
       "136759         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1973   \n",
       "95214          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1973   \n",
       "61723            (French, 1886–1971)    (French)     (1886)   (1971)  (Female)                  1890   \n",
       "136760         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1974   \n",
       "137886         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137882         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137892         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137884         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "136753         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137885         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137891         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137893         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137883         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "121499          (British, 1983–1991)   (British)     (1983)   (1991)        ()                  1989   \n",
       "95218          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "3351           (American, born 1958)  (American)     (1958)      (0)    (Male)                  1964   \n",
       "95216          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "95217          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "95219          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "95220          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "95221          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "137895         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "109072  (Zagreb, Croatian 1961–1966)  (Croatian)     (1959)   (1966)        ()                  1965   \n",
       "137894         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1975   \n",
       "6124             (French, 1970–1991)    (French)     (1970)   (1991)        ()                  1977   \n",
       "95222          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1976   \n",
       "95223          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1977   \n",
       "133545         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1977   \n",
       "6642             (French, 1970–1991)    (French)     (1970)   (1991)        ()                  1978   \n",
       "137887         (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1977   \n",
       "6638             (French, 1970–1991)    (French)     (1970)   (1991)        ()                  1978   \n",
       "131283         (American, 1972–1980)  (American)     (1972)   (1980)        ()                  1980   \n",
       "95224          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1978   \n",
       "95225          (Canadian, 1969–1994)  (Canadian)     (1969)   (1994)    (Male)                  1978   \n",
       "67412           (Mexican, 1915–2006)   (Mexican)     (1915)   (2006)    (Male)                  1924   \n",
       "\n",
       "          classification             department  begin_date_clean  end_date_clean gender_clean nationality_clean  \\\n",
       "2124              Design  Architecture & Design              1911            1930          NaN               NaN   \n",
       "136750             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "101220             Print      Fluxus Collection              1963            1964          NaN               NaN   \n",
       "131800  Illustrated Book      Drawings & Prints              1963            1964          NaN               NaN   \n",
       "63914              Print      Drawings & Prints              1957               0       female          american   \n",
       "133087             Video                   Film              1979               0         male          american   \n",
       "136751             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "95212   Illustrated Book      Drawings & Prints              1969            1994         male          canadian   \n",
       "95213              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "136755             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "136756             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "136757             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "136758             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "136752             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "6009              Design  Architecture & Design              1947               0          NaN             swiss   \n",
       "56719              Print      Drawings & Prints              1948               0         male           british   \n",
       "136759             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "95214              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "61723              Print      Drawings & Prints              1886            1971       female            french   \n",
       "136760             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137886             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137882             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137892             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137884             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "136753             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137885             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137891             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137893             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137883             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "121499            Design  Architecture & Design              1983            1991          NaN           british   \n",
       "95218              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "3351              Design  Architecture & Design              1958               0         male          american   \n",
       "95216              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "95217              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "95219              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "95220              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "95221              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "137895             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "109072        Periodical      Drawings & Prints              1959            1966          NaN          croatian   \n",
       "137894             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "6124              Design  Architecture & Design              1970            1991          NaN            french   \n",
       "95222   Illustrated Book      Drawings & Prints              1969            1994         male          canadian   \n",
       "95223   Illustrated Book      Drawings & Prints              1969            1994         male          canadian   \n",
       "133545           Drawing      Drawings & Prints              1969            1994         male          canadian   \n",
       "6642              Design  Architecture & Design              1970            1991          NaN            french   \n",
       "137887             Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "6638              Design  Architecture & Design              1970            1991          NaN            french   \n",
       "131283            Design  Architecture & Design              1972            1980          NaN          american   \n",
       "95224   Illustrated Book      Drawings & Prints              1969            1994         male          canadian   \n",
       "95225              Print      Drawings & Prints              1969            1994         male          canadian   \n",
       "67412              Print      Drawings & Prints              1915            2006         male           mexican   \n",
       "\n",
       "        year_1  year_2 year_2_2 year_2_4  date_clean  age  \n",
       "2124      1912    1913      NaN      NaN        1912    1  \n",
       "136750    1970    1970      NaN      NaN        1970    1  \n",
       "101220    1964    1964      NaN      NaN        1964    1  \n",
       "131800    1964    1964      NaN      NaN        1964    1  \n",
       "63914     1958    1958      NaN      NaN        1958    1  \n",
       "133087    1980    1980      NaN      NaN        1980    1  \n",
       "136751    1971    1971      NaN      NaN        1971    2  \n",
       "95212     1971    1971      NaN      NaN        1971    2  \n",
       "95213     1971    1971      NaN      NaN        1971    2  \n",
       "136755    1971    1971      NaN      NaN        1971    2  \n",
       "136756    1971    1971      NaN      NaN        1971    2  \n",
       "136757    1971    1971      NaN      NaN        1971    2  \n",
       "136758    1971    1971      NaN      NaN        1971    2  \n",
       "136752    1972    1972      NaN      NaN        1972    3  \n",
       "6009      1950    1950      NaN      NaN        1950    3  \n",
       "56719     1952    1952      NaN      NaN        1952    4  \n",
       "136759    1973    1973      NaN      NaN        1973    4  \n",
       "95214     1973    1973      NaN      NaN        1973    4  \n",
       "61723     1890    1890      NaN      NaN        1890    4  \n",
       "136760    1974    1974      NaN      NaN        1974    5  \n",
       "137886    1975    1975      NaN      NaN        1975    6  \n",
       "137882    1975    1975      NaN      NaN        1975    6  \n",
       "137892    1975    1975      NaN      NaN        1975    6  \n",
       "137884    1975    1975      NaN      NaN        1975    6  \n",
       "136753    1975    1975      NaN      NaN        1975    6  \n",
       "137885    1975    1975      NaN      NaN        1975    6  \n",
       "137891    1975    1975      NaN      NaN        1975    6  \n",
       "137893    1975    1975      NaN      NaN        1975    6  \n",
       "137883    1975    1975      NaN      NaN        1975    6  \n",
       "121499    1989    1989      NaN      NaN        1989    6  \n",
       "95218     1975    1975      NaN      NaN        1975    6  \n",
       "3351      1964    1964      NaN      NaN        1964    6  \n",
       "95216     1975    1975      NaN      NaN        1975    6  \n",
       "95217     1975    1975      NaN      NaN        1975    6  \n",
       "95219     1975    1975      NaN      NaN        1975    6  \n",
       "95220     1975    1975      NaN      NaN        1975    6  \n",
       "95221     1975    1975      NaN      NaN        1975    6  \n",
       "137895    1975    1975      NaN      NaN        1975    6  \n",
       "109072    1965    1965      NaN      NaN        1965    6  \n",
       "137894    1975    1975      NaN      NaN        1975    6  \n",
       "6124      1977    1977      NaN      NaN        1977    7  \n",
       "95222     1976    1976      NaN      NaN        1976    7  \n",
       "95223     1977    1977      NaN      NaN        1977    8  \n",
       "133545    1977    1977      NaN      NaN        1977    8  \n",
       "6642      1978    1978      NaN      NaN        1978    8  \n",
       "137887    1977    1977      NaN      NaN        1977    8  \n",
       "6638      1978    1978      NaN      NaN        1978    8  \n",
       "131283    1980    1980      NaN      NaN        1980    8  \n",
       "95224     1978    1978      NaN      NaN        1978    9  \n",
       "95225     1978    1978      NaN      NaN        1978    9  \n",
       "67412     1924    1924      NaN      NaN        1924    9  "
      ]
     },
     "execution_count": 59,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Inspect values\n",
    "print(moma.loc[moma['age'] < 10, 'artist'].value_counts())\n",
    "moma[moma['age'] < 10].sort_values('age')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The age values over 90 years old look quite likely.\n",
    "\n",
    "There are many teams and organizations with the `age` value less than 10 years old.\n",
    "\n",
    "As we mentioned above, there is no clear way to check whether the artist is an individual or a team.  \n",
    "However, as a result of exploring the outliers, we found such teams as `Hi Red Center`, `General Idea`, `Gorgona artists group`, `Gray Organization`. Let's remove them from the dataset."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 60,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "org count: 114\n",
      "org percentage: 0.1\n",
      "total: 114673\n",
      "\n",
      "moma org values:\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>title</th>\n",
       "      <th>artist</th>\n",
       "      <th>artist_bio</th>\n",
       "      <th>nationality</th>\n",
       "      <th>begin_date</th>\n",
       "      <th>end_date</th>\n",
       "      <th>gender</th>\n",
       "      <th>date</th>\n",
       "      <th>classification</th>\n",
       "      <th>department</th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>end_date_clean</th>\n",
       "      <th>gender_clean</th>\n",
       "      <th>nationality_clean</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "      <th>year_2_2</th>\n",
       "      <th>year_2_4</th>\n",
       "      <th>date_clean</th>\n",
       "      <th>age</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>2124</th>\n",
       "      <td>Printed Fabric</td>\n",
       "      <td>Atelier Martine, Paris, France</td>\n",
       "      <td>(1911–1930)</td>\n",
       "      <td>()</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(1930)</td>\n",
       "      <td>()</td>\n",
       "      <td>1912-1913</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1911</td>\n",
       "      <td>1930</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1912</td>\n",
       "      <td>1913</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1912</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5580</th>\n",
       "      <td>Raymond Loewy dessine la Studebaker</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1987</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1987</td>\n",
       "      <td>1987</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1987</td>\n",
       "      <td>17</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6124</th>\n",
       "      <td>ON Y VA</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1977</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1977</td>\n",
       "      <td>1977</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1977</td>\n",
       "      <td>7</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6638</th>\n",
       "      <td>Allez-Y De Ma Part</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1978</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1978</td>\n",
       "      <td>1978</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1978</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6642</th>\n",
       "      <td>\"VIVRE LE 14 JUILLET/ 1978\"</td>\n",
       "      <td>Grapus</td>\n",
       "      <td>(French, 1970–1991)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1970)</td>\n",
       "      <td>(1991)</td>\n",
       "      <td>()</td>\n",
       "      <td>1978</td>\n",
       "      <td>Design</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1970</td>\n",
       "      <td>1991</td>\n",
       "      <td>NaN</td>\n",
       "      <td>french</td>\n",
       "      <td>1978</td>\n",
       "      <td>1978</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1978</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137891</th>\n",
       "      <td>3. Miss General Idea 1984: Miss General Idea 1984</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137892</th>\n",
       "      <td>4. The 1984 Miss General Idea Pavillion: The 1...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137893</th>\n",
       "      <td>4. The 1984 Miss General Idea Pavillion: Voice...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137894</th>\n",
       "      <td>4. The 1984 Miss General Idea Pavillion: Voice...</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>137895</th>\n",
       "      <td>5. Frame of Reference: Frame of Reference</td>\n",
       "      <td>General Idea</td>\n",
       "      <td>(Canadian, 1969–1994)</td>\n",
       "      <td>(Canadian)</td>\n",
       "      <td>(1969)</td>\n",
       "      <td>(1994)</td>\n",
       "      <td>(Male)</td>\n",
       "      <td>1975</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1969</td>\n",
       "      <td>1994</td>\n",
       "      <td>male</td>\n",
       "      <td>canadian</td>\n",
       "      <td>1975</td>\n",
       "      <td>1975</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1975</td>\n",
       "      <td>6</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>114 rows × 20 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    title                          artist             artist_bio  \\\n",
       "2124                                       Printed Fabric  Atelier Martine, Paris, France            (1911–1930)   \n",
       "5580                  Raymond Loewy dessine la Studebaker                          Grapus    (French, 1970–1991)   \n",
       "6124                                              ON Y VA                          Grapus    (French, 1970–1991)   \n",
       "6638                                   Allez-Y De Ma Part                          Grapus    (French, 1970–1991)   \n",
       "6642                          \"VIVRE LE 14 JUILLET/ 1978\"                          Grapus    (French, 1970–1991)   \n",
       "...                                                   ...                             ...                    ...   \n",
       "137891  3. Miss General Idea 1984: Miss General Idea 1984                    General Idea  (Canadian, 1969–1994)   \n",
       "137892  4. The 1984 Miss General Idea Pavillion: The 1...                    General Idea  (Canadian, 1969–1994)   \n",
       "137893  4. The 1984 Miss General Idea Pavillion: Voice...                    General Idea  (Canadian, 1969–1994)   \n",
       "137894  4. The 1984 Miss General Idea Pavillion: Voice...                    General Idea  (Canadian, 1969–1994)   \n",
       "137895          5. Frame of Reference: Frame of Reference                    General Idea  (Canadian, 1969–1994)   \n",
       "\n",
       "       nationality begin_date end_date  gender       date classification             department  begin_date_clean  \\\n",
       "2124            ()     (1911)   (1930)      ()  1912-1913         Design  Architecture & Design              1911   \n",
       "5580      (French)     (1970)   (1991)      ()       1987         Design  Architecture & Design              1970   \n",
       "6124      (French)     (1970)   (1991)      ()       1977         Design  Architecture & Design              1970   \n",
       "6638      (French)     (1970)   (1991)      ()       1978         Design  Architecture & Design              1970   \n",
       "6642      (French)     (1970)   (1991)      ()       1978         Design  Architecture & Design              1970   \n",
       "...            ...        ...      ...     ...        ...            ...                    ...               ...   \n",
       "137891  (Canadian)     (1969)   (1994)  (Male)       1975          Print      Drawings & Prints              1969   \n",
       "137892  (Canadian)     (1969)   (1994)  (Male)       1975          Print      Drawings & Prints              1969   \n",
       "137893  (Canadian)     (1969)   (1994)  (Male)       1975          Print      Drawings & Prints              1969   \n",
       "137894  (Canadian)     (1969)   (1994)  (Male)       1975          Print      Drawings & Prints              1969   \n",
       "137895  (Canadian)     (1969)   (1994)  (Male)       1975          Print      Drawings & Prints              1969   \n",
       "\n",
       "        end_date_clean gender_clean nationality_clean  year_1  year_2 year_2_2 year_2_4  date_clean  age  \n",
       "2124              1930          NaN               NaN    1912    1913      NaN      NaN        1912    1  \n",
       "5580              1991          NaN            french    1987    1987      NaN      NaN        1987   17  \n",
       "6124              1991          NaN            french    1977    1977      NaN      NaN        1977    7  \n",
       "6638              1991          NaN            french    1978    1978      NaN      NaN        1978    8  \n",
       "6642              1991          NaN            french    1978    1978      NaN      NaN        1978    8  \n",
       "...                ...          ...               ...     ...     ...      ...      ...         ...  ...  \n",
       "137891            1994         male          canadian    1975    1975      NaN      NaN        1975    6  \n",
       "137892            1994         male          canadian    1975    1975      NaN      NaN        1975    6  \n",
       "137893            1994         male          canadian    1975    1975      NaN      NaN        1975    6  \n",
       "137894            1994         male          canadian    1975    1975      NaN      NaN        1975    6  \n",
       "137895            1994         male          canadian    1975    1975      NaN      NaN        1975    6  \n",
       "\n",
       "[114 rows x 20 columns]"
      ]
     },
     "execution_count": 60,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "artist_org = ['Hi Red Center', 'General Idea', 'Gorgona artists group', \n",
    "              'Grey Organisation', 'Grapus', 'Banana Equipment', \n",
    "              'Atelier Martine, Paris, France'\n",
    "             ]\n",
    "artist_bool_org = moma['artist'].isin(artist_org)\n",
    "\n",
    "# Statistics for the rest rows\n",
    "print('org count:', artist_bool_org.sum())\n",
    "print('org percentage:', round(artist_bool_org.sum()*100/moma.shape[0], 2))\n",
    "print('total:', moma.shape[0], end='\\n\\n')\n",
    "\n",
    "# Inspect values\n",
    "print('moma org values:')\n",
    "moma.loc[artist_bool_org]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 61,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Before drop org:\n",
      "total: 114673\n",
      "True     114559\n",
      "False       114\n",
      "Name: artist, dtype: int64\n",
      "\n",
      "After drop org:\n",
      "total: 114559\n",
      "True    114559\n",
      "Name: artist, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "print('Before drop org:')\n",
    "# Total number of rows before\n",
    "print('total:', moma.shape[0])\n",
    "# Number of the valid (True) and invalid (False) rows\n",
    "print((~artist_bool_org).value_counts(dropna=False), end='\\n\\n')\n",
    "\n",
    "# Drop\n",
    "artist_drop_org = moma[artist_bool_org].index # rows to drop\n",
    "moma.drop(index=artist_drop_org, inplace=True)\n",
    "\n",
    "print('After drop org:')\n",
    "# Total number of rows after\n",
    "print('total:', moma.shape[0])\n",
    "# Number of the valid (True) and invalid (False) rows\n",
    "print((~(moma['artist'].isin(artist_org))).value_counts(dropna=False))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Conclusions\n",
    "\n",
    "Since we were focused on getting quick high-level results, we assume that there are some erroneous values among the cleared data. \n",
    "\n",
    "Now, let's continue with the `age` values."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 62,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "33    3.412216\n",
       "37    3.166927\n",
       "35    3.165181\n",
       "30    3.134629\n",
       "32    3.121536\n",
       "36    3.118044\n",
       "40    2.978378\n",
       "39    2.891087\n",
       "43    2.888468\n",
       "41    2.881485\n",
       "38    2.819508\n",
       "45    2.773243\n",
       "34    2.741819\n",
       "31    2.704283\n",
       "46    2.690317\n",
       "47    2.625721\n",
       "49    2.509624\n",
       "42    2.467724\n",
       "29    2.417968\n",
       "28    2.291396\n",
       "Name: age, dtype: float64"
      ]
     },
     "execution_count": 62,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "moma['age'].value_counts(dropna=False, normalize=True).head(20)*100"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Below is the distribution of the number of artworks by age groups."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 63,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(30.0, 35.0]      15.145034\n",
       "(35.0, 40.0]      14.973944\n",
       "(40.0, 45.0]      13.231610\n",
       "(45.0, 50.0]      11.708377\n",
       "(25.0, 30.0]      11.234386\n",
       "(50.0, 55.0]       8.020321\n",
       "(55.0, 60.0]       6.456935\n",
       "(60.0, 65.0]       4.947669\n",
       "(20.0, 25.0]       3.635681\n",
       "(65.0, 70.0]       3.479430\n",
       "(70.0, 75.0]       1.860177\n",
       "(75.0, 80.0]       1.476095\n",
       "(80.0, 85.0]       1.112964\n",
       "(85.0, 90.0]       1.067572\n",
       "(90.0, 95.0]       0.801334\n",
       "(15.0, 20.0]       0.432092\n",
       "(95.0, 100.0]      0.288934\n",
       "(10.0, 15.0]       0.104750\n",
       "(5.0, 10.0]        0.009602\n",
       "(100.0, 105.0]     0.008729\n",
       "(-0.001, 5.0]      0.004365\n",
       "Name: age, dtype: float64"
      ]
     },
     "execution_count": 63,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "bins=[i for i in range(0, 110, 5)] # age groups\n",
    "moma['age'].value_counts(dropna=False, bins=bins, normalize=True) * 100"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Most of the artworks were created in the 4th decade of life. The peak is 33 years old.\n",
    "\n",
    "### The overall plot\n",
    "\n",
    "Let's plot the distribution of the number of artworks by age."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 64,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Import libs\n",
    "import seaborn as sns\n",
    "import matplotlib.pyplot as plt\n",
    "%matplotlib inline\n",
    "\n",
    "# Turn on svg rendering\n",
    "%config InlineBackend.figure_format = 'svg'\n",
    "\n",
    "# Color palette for the blog\n",
    "snark_palette = ['#e0675a', # red\n",
    "                 '#5ca0af', # green\n",
    "                 '#edde7e', # yellow\n",
    "                 '#211c47' # dark blue\n",
    "                ]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 65,
   "metadata": {},
   "outputs": [
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       "<Figure size 432x288 with 1 Axes>"
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   "source": [
    "# Set the figure\n",
    "sns.set(context='paper', style='ticks', palette=snark_palette,\n",
    "        rc={'xtick.major.size': 4, 'ytick.left':False,\n",
    "            'axes.spines.left': False, 'axes.spines.bottom': True,\n",
    "            'axes.spines.right': False, 'axes.spines.top': False\n",
    "           }\n",
    "       )\n",
    "\n",
    "# Create the plot\n",
    "ax_age = sns.distplot(moma['age'], hist=True, rug=False)\n",
    "ax_age.axvline(x=33, ymin=0, ymax=0.97, marker='x', linestyle=':', color=snark_palette[-1]) # 33 boundary\n",
    "\n",
    "# Set some aesthetic params for the plot\n",
    "ax_age.annotate('33', [35, 0.0325], c=snark_palette[-1]) # set label for the 33 boundary\n",
    "ax_age.set_title('Amount of Artworks by Age', loc='right', pad=0, c=snark_palette[-1]) # set title of the plot\n",
    "ax_age.set_xlabel('Age', c=snark_palette[-1]) # set label of x axis\n",
    "ax_age.get_yaxis().set_visible(False) # hide y axis\n",
    "ax_age.set_xticks([i for i in range(0, 110, 10)]) # set x ticks labels\n",
    "ax_age.set_xlim([10, 100]) # set x axis range\n",
    "ax_age.tick_params(axis='x', colors=snark_palette[-1]) # color x ticks\n",
    "ax_age.spines['bottom'].set_color(snark_palette[-1]) # color x axis\n",
    "\n",
    "# Save and plot\n",
    "plt.savefig('plot.pic\\plot.age.png', dpi=150)\n",
    "plt.show()"
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  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "It's curious that most of the works were created at the age of 33!  \n",
    "33 is a meaningful age. For example, in Christianity, Jesus was crucified and then resurrected at the age of 33.\n",
    "\n",
    "We can assume that there is a certain time lag between the origin of the idea and its implementation, the artist had an idea a little earlier.\n",
    "\n",
    "### Plot by gender\n",
    "\n",
    "We are interested in plotting the distribution of the number of artworks by age for men and women."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 66,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(35.0, 40.0]      16.370506\n",
       "(30.0, 35.0]      14.983175\n",
       "(40.0, 45.0]      12.362005\n",
       "(25.0, 30.0]      10.407934\n",
       "(45.0, 50.0]      10.278057\n",
       "(50.0, 55.0]       6.033414\n",
       "(85.0, 90.0]       5.372218\n",
       "(90.0, 95.0]       5.118366\n",
       "(80.0, 85.0]       4.102958\n",
       "(60.0, 65.0]       3.099357\n",
       "(20.0, 25.0]       3.081646\n",
       "(55.0, 60.0]       2.697916\n",
       "(95.0, 100.0]      1.883228\n",
       "(75.0, 80.0]       1.611665\n",
       "(65.0, 70.0]       1.322392\n",
       "(70.0, 75.0]       0.702521\n",
       "(15.0, 20.0]       0.489994\n",
       "(100.0, 105.0]     0.053132\n",
       "(10.0, 15.0]       0.017711\n",
       "(-0.001, 5.0]      0.011807\n",
       "Name: age, dtype: float64"
      ]
     },
     "execution_count": 66,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Women\n",
    "moma.loc[(moma['gender_clean'] == 'female'), 'age'].value_counts(normalize=True, bins=bins).head(20) * 100"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 67,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(30.0, 35.0]     15.131045\n",
       "(35.0, 40.0]     14.682748\n",
       "(40.0, 45.0]     13.401606\n",
       "(45.0, 50.0]     11.961093\n",
       "(25.0, 30.0]     11.382214\n",
       "(50.0, 55.0]      8.388085\n",
       "(55.0, 60.0]      7.131620\n",
       "(60.0, 65.0]      5.284967\n",
       "(65.0, 70.0]      3.868102\n",
       "(20.0, 25.0]      3.719013\n",
       "(70.0, 75.0]      2.068746\n",
       "(75.0, 80.0]      1.457993\n",
       "(80.0, 85.0]      0.596358\n",
       "(15.0, 20.0]      0.413338\n",
       "(85.0, 90.0]      0.321828\n",
       "(10.0, 15.0]      0.120300\n",
       "(90.0, 95.0]      0.052438\n",
       "(95.0, 100.0]     0.012338\n",
       "(5.0, 10.0]       0.004113\n",
       "(-0.001, 5.0]     0.002056\n",
       "Name: age, dtype: float64"
      ]
     },
     "execution_count": 67,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Men\n",
    "moma.loc[(moma['gender_clean'] == 'male'), 'age'].value_counts(normalize=True, bins=bins).head(20) * 100"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 68,
   "metadata": {},
   "outputs": [
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       "<Figure size 432x288 with 1 Axes>"
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     "metadata": {},
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   ],
   "source": [
    "# Set the figure\n",
    "sns.set(context='paper', style='ticks', palette=snark_palette,\n",
    "        rc={'xtick.major.size': 4, 'ytick.left':False,\n",
    "            'axes.spines.left': False, 'axes.spines.bottom': True,\n",
    "            'axes.spines.right': False, 'axes.spines.top': False\n",
    "           }\n",
    "       )\n",
    "\n",
    "# Create the plot\n",
    "f_ag, ax_ag = plt.subplots()\n",
    "sns.distplot(moma.loc[moma['gender_clean'] == 'female', 'age'], hist=False, rug=False, label='female', ax=ax_ag)\n",
    "sns.distplot(moma.loc[moma['gender_clean'] == 'male', 'age'], hist=False, rug=False, label='male', ax=ax_ag)\n",
    "\n",
    "ax_ag.axvline(x=33, ymin=0, ymax=0.98, marker='x', linestyle=':', color=snark_palette[-1]) # 33 boundary\n",
    "\n",
    "# Set some aesthetic params for the plot\n",
    "ax_ag.annotate('33', [28, 0.0323], c=snark_palette[-1]) # set label for the 33 boundary\n",
    "ax_ag.legend() # set legend\n",
    "ax_ag.set_title('Amount of Artworks by Age: gender', loc='right', c=snark_palette[-1]) # set title of the plot\n",
    "ax_ag.set_xlabel('Age', c=snark_palette[-1]) # set label of x axis\n",
    "ax_ag.get_yaxis().set_visible(False) # hide y axis\n",
    "ax_ag.set_xticks([i for i in range(0, 110, 10)]) # set x ticks labels\n",
    "ax_ag.set_xlim([10, 110]) # set x axis range\n",
    "ax_ag.tick_params(axis='x', colors=snark_palette[-1]) # color x ticks\n",
    "ax_ag.spines['bottom'].set_color(snark_palette[-1]) # color x axis\n",
    "\n",
    "# Save and plot\n",
    "plt.savefig('plot.pic\\plot.age.gender.png', dpi=150)\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "It looks like thirty is really the most productive age.\n",
    "\n",
    "For men, the distribution of the number of works reflects the pattern of 30 years.  \n",
    "However, the plot is ambiguous for women, perhaps because of a small portion of the data.\n",
    "\n",
    "Let's deep into the values for women."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 69,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Total by gender:\n",
      "male      97257\n",
      "female    16939\n",
      "Name: gender_clean, dtype: int64\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "46    665\n",
       "36    648\n",
       "37    622\n",
       "41    586\n",
       "38    567\n",
       "32    559\n",
       "35    557\n",
       "39    521\n",
       "33    486\n",
       "31    469\n",
       "34    467\n",
       "30    458\n",
       "45    435\n",
       "40    415\n",
       "43    395\n",
       "42    374\n",
       "28    373\n",
       "29    361\n",
       "49    353\n",
       "27    336\n",
       "Name: age, dtype: int64"
      ]
     },
     "execution_count": 69,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Women\n",
    "print('Total by gender:', moma['gender_clean'].value_counts(), sep='\\n')\n",
    "\n",
    "# 46 peack\n",
    "moma.loc[(moma['gender_clean'] == 'female'), 'age'].value_counts().head(20)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "For women, more artworks are created at the age of 46."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Lilly Reich      253\n",
      "Doris Ulmann      91\n",
      "Ynez Johnston     35\n",
      "Gay Block         26\n",
      "Kiki Smith        23\n",
      "Name: artist, dtype: int64\n"
     ]
    },
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       "      <td>NaN</td>\n",
       "      <td>1930</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>50004</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Doris Ulmann</td>\n",
       "      <td>(American, 1884–1934)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1884)</td>\n",
       "      <td>(1934)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1929-31</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1884</td>\n",
       "      <td>1934</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1929</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1930</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>50005</th>\n",
       "      <td>Untitled</td>\n",
       "      <td>Doris Ulmann</td>\n",
       "      <td>(American, 1884–1934)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1884)</td>\n",
       "      <td>(1934)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1929-31</td>\n",
       "      <td>Photograph</td>\n",
       "      <td>Photography</td>\n",
       "      <td>1884</td>\n",
       "      <td>1934</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1929</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1930</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107260</th>\n",
       "      <td>Attachment for rubber strap (Perspective sketc...</td>\n",
       "      <td>Lilly Reich</td>\n",
       "      <td>(German, 1885–1947)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1885)</td>\n",
       "      <td>(1947)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1931</td>\n",
       "      <td>Mies van der Rohe Archive</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1885</td>\n",
       "      <td>1947</td>\n",
       "      <td>female</td>\n",
       "      <td>german</td>\n",
       "      <td>1931</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1931</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107261</th>\n",
       "      <td>Bed and couch, LR 600, 610, and 620 (Elevation...</td>\n",
       "      <td>Lilly Reich</td>\n",
       "      <td>(German, 1885–1947)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1885)</td>\n",
       "      <td>(1947)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1931</td>\n",
       "      <td>Mies van der Rohe Archive</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1885</td>\n",
       "      <td>1947</td>\n",
       "      <td>female</td>\n",
       "      <td>german</td>\n",
       "      <td>1931</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1931</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107262</th>\n",
       "      <td>Bed and couch, LR 600, 610, and 620 (Elevation...</td>\n",
       "      <td>Lilly Reich</td>\n",
       "      <td>(German, 1885–1947)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1885)</td>\n",
       "      <td>(1947)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1931</td>\n",
       "      <td>Mies van der Rohe Archive</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1885</td>\n",
       "      <td>1947</td>\n",
       "      <td>female</td>\n",
       "      <td>german</td>\n",
       "      <td>1931</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1931</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107263</th>\n",
       "      <td>Bed and mattress frame, LR 600 (Plan and eleva...</td>\n",
       "      <td>Lilly Reich</td>\n",
       "      <td>(German, 1885–1947)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1885)</td>\n",
       "      <td>(1947)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1931</td>\n",
       "      <td>Mies van der Rohe Archive</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1885</td>\n",
       "      <td>1947</td>\n",
       "      <td>female</td>\n",
       "      <td>german</td>\n",
       "      <td>1931</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1931</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107264</th>\n",
       "      <td>Daybed, LR 620 (Plan and elevations)</td>\n",
       "      <td>Lilly Reich</td>\n",
       "      <td>(German, 1885–1947)</td>\n",
       "      <td>(German)</td>\n",
       "      <td>(1885)</td>\n",
       "      <td>(1947)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1931</td>\n",
       "      <td>Mies van der Rohe Archive</td>\n",
       "      <td>Architecture &amp; Design</td>\n",
       "      <td>1885</td>\n",
       "      <td>1947</td>\n",
       "      <td>female</td>\n",
       "      <td>german</td>\n",
       "      <td>1931</td>\n",
       "      <td>1931</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1931</td>\n",
       "      <td>46</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>428 rows × 20 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    title        artist             artist_bio nationality begin_date  \\\n",
       "50001                                            Untitled  Doris Ulmann  (American, 1884–1934)  (American)     (1884)   \n",
       "50002                                  Roll, Jordan, Roll  Doris Ulmann  (American, 1884–1934)  (American)     (1884)   \n",
       "50003                                            Untitled  Doris Ulmann  (American, 1884–1934)  (American)     (1884)   \n",
       "50004                                            Untitled  Doris Ulmann  (American, 1884–1934)  (American)     (1884)   \n",
       "50005                                            Untitled  Doris Ulmann  (American, 1884–1934)  (American)     (1884)   \n",
       "...                                                   ...           ...                    ...         ...        ...   \n",
       "107260  Attachment for rubber strap (Perspective sketc...   Lilly Reich    (German, 1885–1947)    (German)     (1885)   \n",
       "107261  Bed and couch, LR 600, 610, and 620 (Elevation...   Lilly Reich    (German, 1885–1947)    (German)     (1885)   \n",
       "107262  Bed and couch, LR 600, 610, and 620 (Elevation...   Lilly Reich    (German, 1885–1947)    (German)     (1885)   \n",
       "107263  Bed and mattress frame, LR 600 (Plan and eleva...   Lilly Reich    (German, 1885–1947)    (German)     (1885)   \n",
       "107264               Daybed, LR 620 (Plan and elevations)   Lilly Reich    (German, 1885–1947)    (German)     (1885)   \n",
       "\n",
       "       end_date    gender     date             classification             department  begin_date_clean  \\\n",
       "50001    (1934)  (Female)  1929-31                 Photograph            Photography              1884   \n",
       "50002    (1934)  (Female)  1929-31                 Photograph            Photography              1884   \n",
       "50003    (1934)  (Female)  1929-31                 Photograph            Photography              1884   \n",
       "50004    (1934)  (Female)  1929-31                 Photograph            Photography              1884   \n",
       "50005    (1934)  (Female)  1929-31                 Photograph            Photography              1884   \n",
       "...         ...       ...      ...                        ...                    ...               ...   \n",
       "107260   (1947)  (Female)     1931  Mies van der Rohe Archive  Architecture & Design              1885   \n",
       "107261   (1947)  (Female)     1931  Mies van der Rohe Archive  Architecture & Design              1885   \n",
       "107262   (1947)  (Female)     1931  Mies van der Rohe Archive  Architecture & Design              1885   \n",
       "107263   (1947)  (Female)     1931  Mies van der Rohe Archive  Architecture & Design              1885   \n",
       "107264   (1947)  (Female)     1931  Mies van der Rohe Archive  Architecture & Design              1885   \n",
       "\n",
       "        end_date_clean gender_clean nationality_clean  year_1  year_2 year_2_2 year_2_4  date_clean  age  \n",
       "50001             1934       female          american    1929    1931      NaN      NaN        1930   46  \n",
       "50002             1934       female          american    1929    1931      NaN      NaN        1930   46  \n",
       "50003             1934       female          american    1929    1931      NaN      NaN        1930   46  \n",
       "50004             1934       female          american    1929    1931      NaN      NaN        1930   46  \n",
       "50005             1934       female          american    1929    1931      NaN      NaN        1930   46  \n",
       "...                ...          ...               ...     ...     ...      ...      ...         ...  ...  \n",
       "107260            1947       female            german    1931    1931      NaN      NaN        1931   46  \n",
       "107261            1947       female            german    1931    1931      NaN      NaN        1931   46  \n",
       "107262            1947       female            german    1931    1931      NaN      NaN        1931   46  \n",
       "107263            1947       female            german    1931    1931      NaN      NaN        1931   46  \n",
       "107264            1947       female            german    1931    1931      NaN      NaN        1931   46  \n",
       "\n",
       "[428 rows x 20 columns]"
      ]
     },
     "execution_count": 70,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Top5 women in 46\n",
    "women_46_top5 = (moma.loc[(moma['gender_clean'] == 'female') & (moma['age'] == 46), 'artist']).value_counts().head()\n",
    "\n",
    "print(women_46_top5)\n",
    "moma.loc[(moma['artist'].isin(women_46_top5.index)) & (moma['age'] == 46)]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Five female artists influence the outliers of 46 years. More than others, [Lilly Reich](https://www.moma.org/artists/8059).\n",
    "\n",
    "We can see a peak around 90 years on the plot. Let's take a closer look."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 71,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "88    335\n",
      "84    249\n",
      "89    196\n",
      "90    175\n",
      "83    148\n",
      "87    107\n",
      "81    106\n",
      "82    105\n",
      "86     97\n",
      "85     87\n",
      "80     26\n",
      "Name: age, dtype: int64\n",
      "Louise Bourgeois       334\n",
      "Sonia Delaunay-Terk      1\n",
      "Name: artist, dtype: int64\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
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       "        vertical-align: middle;\n",
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       "\n",
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       "    .dataframe thead th {\n",
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       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>title</th>\n",
       "      <th>artist</th>\n",
       "      <th>artist_bio</th>\n",
       "      <th>nationality</th>\n",
       "      <th>begin_date</th>\n",
       "      <th>end_date</th>\n",
       "      <th>gender</th>\n",
       "      <th>date</th>\n",
       "      <th>classification</th>\n",
       "      <th>department</th>\n",
       "      <th>begin_date_clean</th>\n",
       "      <th>end_date_clean</th>\n",
       "      <th>gender_clean</th>\n",
       "      <th>nationality_clean</th>\n",
       "      <th>year_1</th>\n",
       "      <th>year_2</th>\n",
       "      <th>year_2_2</th>\n",
       "      <th>year_2_4</th>\n",
       "      <th>date_clean</th>\n",
       "      <th>age</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>35799</th>\n",
       "      <td>Color Rhythm No. 1921-1973</td>\n",
       "      <td>Sonia Delaunay-Terk</td>\n",
       "      <td>(French, born Ukraine. 1885–1979)</td>\n",
       "      <td>(French)</td>\n",
       "      <td>(1885)</td>\n",
       "      <td>(1979)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1973</td>\n",
       "      <td>Drawing</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1885</td>\n",
       "      <td>1979</td>\n",
       "      <td>female</td>\n",
       "      <td>french</td>\n",
       "      <td>1973</td>\n",
       "      <td>1973</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1973</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>55942</th>\n",
       "      <td>Mother and Child</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>55943</th>\n",
       "      <td>The Angry Cat</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>55944</th>\n",
       "      <td>The Angry Cat, state I of III (recto), Hanging...</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>55945</th>\n",
       "      <td>Champfleurette #2</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Print</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>124192</th>\n",
       "      <td>Point d'Ironie, cover</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>124193</th>\n",
       "      <td>Point d'Ironie, spread 1 of 3</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>124194</th>\n",
       "      <td>Point d'Ironie, spread 2 of 3</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>124195</th>\n",
       "      <td>Point d'Ironie, spread 3 of 3</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>124196</th>\n",
       "      <td>Point d'Ironie, back cover</td>\n",
       "      <td>Louise Bourgeois</td>\n",
       "      <td>(American, born France. 1911–2010)</td>\n",
       "      <td>(American)</td>\n",
       "      <td>(1911)</td>\n",
       "      <td>(2010)</td>\n",
       "      <td>(Female)</td>\n",
       "      <td>1999</td>\n",
       "      <td>Illustrated Book</td>\n",
       "      <td>Drawings &amp; Prints</td>\n",
       "      <td>1911</td>\n",
       "      <td>2010</td>\n",
       "      <td>female</td>\n",
       "      <td>american</td>\n",
       "      <td>1999</td>\n",
       "      <td>1999</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1999</td>\n",
       "      <td>88</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>335 rows × 20 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                    title               artist                          artist_bio  \\\n",
       "35799                          Color Rhythm No. 1921-1973  Sonia Delaunay-Terk   (French, born Ukraine. 1885–1979)   \n",
       "55942                                    Mother and Child     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "55943                                       The Angry Cat     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "55944   The Angry Cat, state I of III (recto), Hanging...     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "55945                                   Champfleurette #2     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "...                                                   ...                  ...                                 ...   \n",
       "124192                              Point d'Ironie, cover     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "124193                      Point d'Ironie, spread 1 of 3     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "124194                      Point d'Ironie, spread 2 of 3     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "124195                      Point d'Ironie, spread 3 of 3     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "124196                         Point d'Ironie, back cover     Louise Bourgeois  (American, born France. 1911–2010)   \n",
       "\n",
       "       nationality begin_date end_date    gender  date    classification         department  begin_date_clean  \\\n",
       "35799     (French)     (1885)   (1979)  (Female)  1973           Drawing  Drawings & Prints              1885   \n",
       "55942   (American)     (1911)   (2010)  (Female)  1999             Print  Drawings & Prints              1911   \n",
       "55943   (American)     (1911)   (2010)  (Female)  1999             Print  Drawings & Prints              1911   \n",
       "55944   (American)     (1911)   (2010)  (Female)  1999             Print  Drawings & Prints              1911   \n",
       "55945   (American)     (1911)   (2010)  (Female)  1999             Print  Drawings & Prints              1911   \n",
       "...            ...        ...      ...       ...   ...               ...                ...               ...   \n",
       "124192  (American)     (1911)   (2010)  (Female)  1999  Illustrated Book  Drawings & Prints              1911   \n",
       "124193  (American)     (1911)   (2010)  (Female)  1999  Illustrated Book  Drawings & Prints              1911   \n",
       "124194  (American)     (1911)   (2010)  (Female)  1999  Illustrated Book  Drawings & Prints              1911   \n",
       "124195  (American)     (1911)   (2010)  (Female)  1999  Illustrated Book  Drawings & Prints              1911   \n",
       "124196  (American)     (1911)   (2010)  (Female)  1999  Illustrated Book  Drawings & Prints              1911   \n",
       "\n",
       "        end_date_clean gender_clean nationality_clean  year_1  year_2 year_2_2 year_2_4  date_clean  age  \n",
       "35799             1979       female            french    1973    1973      NaN      NaN        1973   88  \n",
       "55942             2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "55943             2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "55944             2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "55945             2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "...                ...          ...               ...     ...     ...      ...      ...         ...  ...  \n",
       "124192            2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "124193            2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "124194            2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "124195            2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "124196            2010       female          american    1999    1999      NaN      NaN        1999   88  \n",
       "\n",
       "[335 rows x 20 columns]"
      ]
     },
     "execution_count": 71,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# 90 peack\n",
    "print(moma.loc[(moma['gender_clean'] == 'female') & (moma['age'].between(80, 90)), 'age'].value_counts().head(20))\n",
    "\n",
    "# Top5 women in 88\n",
    "women_88_top5 = (moma.loc[(moma['gender_clean'] == 'female') & (moma['age'] == 88), 'artist']).value_counts().head()\n",
    "\n",
    "print(women_88_top5)\n",
    "moma.loc[(moma['artist'].isin(women_88_top5.index)) & (moma['age'] == 88)]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This peak is characterized by works of Louise Bourgeois, an artist who did not pay attention to age.\n",
    "\n",
    "You can find more about Louise Bourgeois and her creativity [here](https://en.wikipedia.org/wiki/Louise_Bourgeois) and [here](https://www.moma.org/artists/8059).\n",
    "\n",
    "### Plot by nationality\n",
    "\n",
    "Let's determine 4 nationalities with the largest number of the art objects."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 72,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "american    53589\n",
      "french      20915\n",
      "german       8559\n",
      "british      5168\n",
      "Name: nationality_clean, dtype: int64\n"
     ]
    }
   ],
   "source": [
    "nationality_top4 = moma['nationality_clean'].value_counts(normalize=False).head(4)\n",
    "print(nationality_top4)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 73,
   "metadata": {},
   "outputs": [
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    "# Set the figure\n",
    "sns.set(context='paper', style='ticks', palette=snark_palette,\n",
    "        rc={'xtick.major.size': 4, 'ytick.left':False,\n",
    "            'axes.spines.left': False, 'axes.spines.bottom': True,\n",
    "            'axes.spines.right': False, 'axes.spines.top': False\n",
    "           }\n",
    "       )\n",
    "\n",
    "# Create the plot\n",
    "moma_nationality = moma.loc[moma['nationality_clean'].isin(nationality_top4.index), ['nationality_clean', 'age']] # data\n",
    "g_an = sns.FacetGrid(moma_nationality, hue='nationality_clean')\n",
    "g_an = g_an.map(sns.distplot, 'age', hist=False, rug=False)\n",
    "\n",
    "g_an.ax.axvline(x=33, ymin=0, ymax=0.98, marker='x', linestyle=':', color=snark_palette[-1]) # 33 boundary\n",
    "\n",
    "# Set some aesthetic params for the plot\n",
    "g_an.fig.set_size_inches(6, 4)\n",
    "g_an.ax.annotate('33', [28, 0.0415], c=snark_palette[-1]) # set label for the 33 boundary\n",
    "g_an.ax.legend() # set legend\n",
    "g_an.ax.set_title('Amount of Artworks by Age: nationality', loc='right', c=snark_palette[-1]) # set title of the plot\n",
    "g_an.ax.set_xlabel('Age', c=snark_palette[-1]) # set label of x axis\n",
    "g_an.ax.get_yaxis().set_visible(False) # hide y labels\n",
    "g_an.despine(left=True) # hide y axis\n",
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    "g_an.ax.spines['bottom'].set_color(snark_palette[-1]) # color x axis\n",
    "\n",
    "# Save and plot\n",
    "g_an.fig.subplots_adjust(bottom=0.125, top=0.88, left=0.125, right=0.9) # adjust for the post picture\n",
    "g_an.savefig('plot.pic\\plot.age.nationality.png', dpi=150, bbox_inches=None)\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Plot by century\n",
    "\n",
    "Let's create the plot based on the centuries in which the artworks were created.  \n",
    "First, we'll save the century in a separate column `century`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 74,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "      <th>date_clean</th>\n",
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       "  <tbody>\n",
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       "      <td>1896</td>\n",
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       "      <td>1980</td>\n",
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       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>1903</td>\n",
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       "      <th>138156</th>\n",
       "      <td>1934</td>\n",
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       "    </tr>\n",
       "    <tr>\n",
       "      <th>138157</th>\n",
       "      <td>1934</td>\n",
       "      <td>20</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>138158</th>\n",
       "      <td>1934</td>\n",
       "      <td>20</td>\n",
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       "    <tr>\n",
       "      <th>138159</th>\n",
       "      <td>1934</td>\n",
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       "    <tr>\n",
       "      <th>138160</th>\n",
       "      <td>1934</td>\n",
       "      <td>20</td>\n",
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       "  </tbody>\n",
       "</table>\n",
       "<p>114559 rows × 2 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "        date_clean  century\n",
       "0             1896       19\n",
       "1             1987       20\n",
       "2             1903       20\n",
       "3             1980       20\n",
       "4             1903       20\n",
       "...            ...      ...\n",
       "138156        1934       20\n",
       "138157        1934       20\n",
       "138158        1934       20\n",
       "138159        1934       20\n",
       "138160        1934       20\n",
       "\n",
       "[114559 rows x 2 columns]"
      ]
     },
     "execution_count": 74,
     "metadata": {},
     "output_type": "execute_result"
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   "source": [
    "# Extract \n",
    "moma['century'] = ((moma['date_clean'] // 100) + 1).astype(int)\n",
    "\n",
    "# Inspect values\n",
    "moma[['date_clean', 'century']]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 75,
   "metadata": {},
   "outputs": [
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     "data": {
      "text/plain": [
       "21    12076\n",
       "20    97626\n",
       "19     4771\n",
       "18       86\n",
       "Name: century, dtype: int64"
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     "execution_count": 75,
     "metadata": {},
     "output_type": "execute_result"
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   "source": [
    "moma['century'].value_counts().sort_index(ascending=False)"
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  {
   "cell_type": "code",
   "execution_count": 76,
   "metadata": {},
   "outputs": [
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       " </defs>\r\n",
       "</svg>\r\n"
      ],
      "text/plain": [
       "<Figure size 432x288 with 1 Axes>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "# Set the figure\n",
    "sns.set(context='paper', style='ticks', palette=snark_palette,\n",
    "        rc={'xtick.major.size': 4, 'ytick.left':False,\n",
    "            'axes.spines.left': False, 'axes.spines.bottom': True,\n",
    "            'axes.spines.right': False, 'axes.spines.top': False\n",
    "           }\n",
    "       )\n",
    "\n",
    "# Create the plot\n",
    "moma_century = moma.loc[moma['century'].isin([19, 20, 21]), ['century', 'age']] # data\n",
    "g_ac = sns.FacetGrid(moma_century, hue='century')\n",
    "g_ac = g_ac.map(sns.distplot, 'age', hist=False, rug=False)\n",
    "\n",
    "g_ac.ax.axvline(x=33, ymin=0, ymax=0.98, marker='x', linestyle=':', color=snark_palette[-1]) # 33 boundary\n",
    "\n",
    "# Set some aesthetic params for the plot\n",
    "g_ac.fig.set_size_inches(6, 4)\n",
    "g_ac.ax.annotate('33', [28, 0.041], c=snark_palette[-1]) # set label for the 33 boundary\n",
    "g_ac.ax.legend() # set legend\n",
    "g_ac.ax.set_title('Amount of Artworks by Age: century', loc='right', c=snark_palette[-1]) # set title of the plot\n",
    "g_ac.ax.set_xlabel('Age', c=snark_palette[-1]) # set label of x axis\n",
    "g_ac.ax.get_yaxis().set_visible(False) # hide y labels\n",
    "g_ac.despine(left=True) # hide y axis\n",
    "g_ac.ax.set_xticks([i for i in range(0, 110, 10)]) # set x ticks labels\n",
    "g_ac.ax.set_xlim([10, 110]) # set x axis range\n",
    "g_ac.ax.tick_params(axis='x', colors=snark_palette[-1]) # color x ticks\n",
    "g_ac.ax.spines['bottom'].set_color(snark_palette[-1]) # color x axis\n",
    "\n",
    "# Save and plot\n",
    "g_ac.fig.subplots_adjust(bottom=0.125, top=0.88, left=0.125, right=0.9) # adjust for post picture\n",
    "g_ac.savefig('plot.pic\\plot.age.century.png', dpi=150, bbox_inches=None)\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In total, *we found out, that 33 is really especial age!*\n",
    "\n",
    "\n",
    "# Blog Post"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 77,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1172"
      ]
     },
     "execution_count": 77,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "blog_post = r\"\"\"\n",
    "## WHEN IS MY BRAIN UP?🎓\n",
    "\n",
    "The human brain reaches its peak efficiency by the age of 30*.  \n",
    "That say the scientists, let's ask the data!  \n",
    "\n",
    "📌We wondered if most of the artworks in the Moma database were actually created by artists in their 30s.  \n",
    "\n",
    "Since the artworks have been included in the collection of the museum, they represent a valuable result of the human brain activity.  \n",
    "We calculated the age when the artist created his work and ploted at what age the most of the valuable artworks was created.  \n",
    "It's curious that most of the works were created at the age of 33!  \n",
    "33 is a meaningful age.  \n",
    "For example, in Christianity, Jesus was crucified and then resurrected at the age of 33.  \n",
    "\n",
    "We can assume that there is a certain time lag between the origin of the idea and its implementation.  \n",
    "\n",
    "(Interested in more details? Follow the link in bio for the entire research project!)  \n",
    "\n",
    "\\* (e.g, Chapter 6 of the book \"Behave: The Biology of Humans at Our Best and Worst\" by Robert M. Sapolsky)  \n",
    ".  \n",
    ".  \n",
    ".  \n",
    "\\#funtime \\#probably \\#datascience \\#datapower \\#data_sugar_brain \\#human_brain \\#art \\#data_know_everything_and_nothing \\#linkinbio \\#datajournalism \\#python\n",
    "\"\"\"\n",
    "\n",
    "# Check post text length for Instagram\n",
    "len(blog_post)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 78,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/markdown": [
       "\n",
       "## WHEN IS MY BRAIN UP?🎓\n",
       "\n",
       "The human brain reaches its peak efficiency by the age of 30*.  \n",
       "That say the scientists, let's ask the data!  \n",
       "\n",
       "📌We wondered if most of the artworks in the Moma database were actually created by artists in their 30s.  \n",
       "\n",
       "Since the artworks have been included in the collection of the museum, they represent a valuable result of the human brain activity.  \n",
       "We calculated the age when the artist created his work and ploted at what age the most of the valuable artworks was created.  \n",
       "It's curious that most of the works were created at the age of 33!  \n",
       "33 is a meaningful age.  \n",
       "For example, in Christianity, Jesus was crucified and then resurrected at the age of 33.  \n",
       "\n",
       "We can assume that there is a certain time lag between the origin of the idea and its implementation.  \n",
       "\n",
       "(Interested in more details? Follow the link in bio for the entire research project!)  \n",
       "\n",
       "\\* (e.g, Chapter 6 of the book \"Behave: The Biology of Humans at Our Best and Worst\" by Robert M. Sapolsky)  \n",
       ".  \n",
       ".  \n",
       ".  \n",
       "\\#funtime \\#probably \\#datascience \\#datapower \\#data_sugar_brain \\#human_brain \\#art \\#data_know_everything_and_nothing \\#linkinbio \\#datajournalism \\#python\n"
      ],
      "text/plain": [
       "<IPython.core.display.Markdown object>"
      ]
     },
     "execution_count": 78,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from IPython.display import Markdown as md\n",
    "md(blog_post)"
   ]
  }
 ],
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   "display_name": "Python 3",
   "language": "python",
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