CantEscape.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import csv\n",
    "import pandas as pd\n",
    "\n",
    "df = pd.DataFrame({\"text\": [\"\"\"Hello! Please \"help\" me. I cannot quote a csv.\\\\\"\"\"], \"zoo\": [\"1\"]})\n",
    "df.to_csv(\"out.csv\", index=False, quoting=csv.QUOTE_NONNUMERIC, encoding=\"utf-8\", escapechar='\\\\', doublequote=False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Hello! Please \"help\" me. I cannot quote a csv.\\\\'"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "badval = df.text[0]\n",
    "badval"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\"text\",\"zoo\"\r\n",
      "\"Hello! Please \\\"help\\\" me. I cannot quote a csv.\\\",\"1\"\r\n"
     ]
    }
   ],
   "source": [
    "!cat out.csv"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Hello! Please \"help\" me. I cannot quote a csv.\",1\"'"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "df2 = pd.read_csv(\"out.csv\", quoting=csv.QUOTE_NONNUMERIC, encoding=\"utf-8\", escapechar='\\\\', doublequote=False)\n",
    "df2.text[0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Hello! Please \"help\" me. I cannot quote a csv.\\\\'"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "badval"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "with open('out2.csv', 'w', encoding='utf-8') as f:\n",
    "    writer = csv.writer(f, quoting=csv.QUOTE_NONNUMERIC, escapechar=\"\\\\\", doublequote=False)\n",
    "    writer.writerow((badval, \"1\"))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\"Hello! Please \\\"help\\\" me. I cannot quote a csv.\\\",\"1\"\r",
      "\r\n"
     ]
    }
   ],
   "source": [
    "!cat out2.csv"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['Hello! Please \"help\" me. I cannot quote a csv.\",1\"']\n"
     ]
    }
   ],
   "source": [
    "with open('out2.csv', 'r', encoding='utf-8') as f:\n",
    "    reader = csv.reader(f, quoting=csv.QUOTE_NONNUMERIC, escapechar=\"\\\\\", doublequote=False)\n",
    "    print(next(reader))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.5.1"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 0
}