{
 "metadata": {
  "name": "99-generate-lots-of-birds"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "birdnames = \"\"\"\\\n",
      "Common Teal\n",
      "Long-tailed Duck\n",
      "Little Grebe\n",
      "Albatross\n",
      "Flamingo\n",
      "Heron\n",
      "Stork\n",
      "Shoebill\n",
      "Vulture\n",
      "Bald Eagle\"\"\".splitlines()\n",
      "\n",
      "states = \"\"\"Kentucky\n",
      "Missouri\n",
      "Kansas\n",
      "Maine\n",
      "Michigan\n",
      "New York\"\"\".splitlines()\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import random, datetime\n",
      "def generate_random_day(year):\n",
      "    doy = int(random.gauss(200, 50))\n",
      "    doy = min(doy, 365)\n",
      "    doy = max(doy, 1)\n",
      "    datestr = \"%s %s\" % (doy, year)\n",
      "    date = datetime.datetime.strptime(datestr, \"%j %Y\")\n",
      "    new_date = date.strftime(\"%B %d\")\n",
      "    return new_date.lower()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 33
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "generate_random_day(2013)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "pyout",
       "prompt_number": 34,
       "text": [
        "'june 05'"
       ]
      }
     ],
     "prompt_number": 34
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "def generate_random_observation():\n",
      "    bird = random.choice(birdnames).lower()\n",
      "    state = random.choice(states).lower()\n",
      "    day = generate_random_day(2013)\n",
      "    return bird, state, day"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 35
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "generate_random_observation()\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "pyout",
       "prompt_number": 36,
       "text": [
        "('albatross', 'maine', 'may 31')"
       ]
      }
     ],
     "prompt_number": 36
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import csv\n",
      "fp = file('long-birds.csv', 'wb')\n",
      "w = csv.writer(fp)\n",
      "\n",
      "for i in range(10000):\n",
      "    row = generate_random_observation()\n",
      "    w.writerow(row)\n",
      "fp.close()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 37
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "!head long-birds.csv"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "albatross,maine,april 27\r",
        "\r\n",
        "stork,michigan,september 21\r",
        "\r\n",
        "heron,kentucky,september 22\r",
        "\r\n",
        "albatross,kansas,june 28\r",
        "\r\n",
        "common teal,kentucky,june 03\r",
        "\r\n",
        "long-tailed duck,maine,august 28\r",
        "\r\n",
        "vulture,kansas,september 25\r",
        "\r\n",
        "flamingo,kansas,may 16\r",
        "\r\n",
        "vulture,missouri,july 16\r",
        "\r\n",
        "albatross,maine,july 20\r",
        "\r\n"
       ]
      }
     ],
     "prompt_number": 38
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": []
    }
   ],
   "metadata": {}
  }
 ]
}