Saving data to a text file in Python

Saving data to a text file in Python.ipynb

{
 "metadata": {
  "name": "Saving data to a file in Python"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from numpy import arange\n",
      "\n",
      "fitness_list = arange(1, 50, 2)\n",
      "trait1_list = arange(0, 250, 10)\n",
      "trait2_list = arange(150, 0, -6)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 8
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "replicate = 5\n",
      "\n",
      "with open(\"output_data\" + str(replicate) + \".csv\", \"w\") as out_file:\n",
      "    for i in range(len(fitness_list)):\n",
      "        out_string = \"\"\n",
      "        out_string += str(fitness_list[i])\n",
      "        out_string += \",\" + str(trait1_list[i])\n",
      "        out_string += \",\" + str(trait2_list[i])\n",
      "        out_string += \"\\n\"\n",
      "        out_file.write(out_string)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 21
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "!ls output_*"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "output_data.csv  output_data5.csv\r\n"
       ]
      }
     ],
     "prompt_number": 22
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": []
    }
   ],
   "metadata": {}
  }
 ]
}