{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Tokenizing"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "# define a function to get .txt files in a folder\n",
    "from os import listdir\n",
    "def list_textfiles(directory):\n",
    "    \"Return a list of filenames ending in '.txt' in DIRECTORY.\"\n",
    "    textfiles = []\n",
    "    for filename in listdir(directory):\n",
    "        if filename.endswith(\".txt\"):\n",
    "            textfiles.append(directory + \"/\" + filename)\n",
    "    return textfiles   \n",
    "    "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# define a function to read the text in a .txt file\n",
    "\n",
    "def read_txt(filename):\n",
    "    try:\n",
    "        f = open(filename,'r')\n",
    "        text = f.read()\n",
    "    finally:\n",
    "        if f:\n",
    "            f.close()\n",
    "    return text"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "448822\n"
     ]
    }
   ],
   "source": [
    "#import harry potter textfiles\n",
    "filenames = list_textfiles('HP')\n",
    "corpus = []\n",
    "for f in filenames:\n",
    "    corpus.append(read_txt(f))\n",
    "print len(corpus[0])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
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