Comparing cost of function calls [ipython-notebook]

Comparing cost of function calls.ipynb

{
 "metadata": {
  "name": "Comparing cost of function calls"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "def without_func_call(arr):\n    out = []\n    for i, elem in enumerate(arr):\n        if i % 3 == 0:\n            out.append(5)\n        else:\n            out.append(elem)\n    return out\n\ndef func(i, elem):\n    if i % 3 == 0:\n        return 5\n    else:\n        return elem\n    \ndef with_func_call(arr):\n    out = []\n    for i, elem in enumerate(arr):\n        out.append(func(i, elem))\n    return out\n        ",
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "arr = range(100)\narr2 = range(1000)\narr3 = range(10000)\nprint \"100 length\"\n%timeit without_func_call(arr)\n%timeit with_func_call(arr)\nprint \"1000 length\"\n%timeit without_func_call(arr2)\n%timeit with_func_call(arr2)\nprint \"10000 length\"\n%timeit without_func_call(arr3)\n%timeit with_func_call(arr3)",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "100 length\n10000 loops, best of 3: 42.5 us per loop"
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "\n10000 loops, best of 3: 58.3 us per loop"
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "\n1000 length\n1000 loops, best of 3: 372 us per loop"
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "\n1000 loops, best of 3: 521 us per loop"
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "\n10000 length\n100 loops, best of 3: 3.73 ms per loop"
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "\n100 loops, best of 3: 5.21 ms per loop"
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "\n"
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "print \"Finished\"",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "Finished\n"
      }
     ],
     "prompt_number": 4
    }
   ],
   "metadata": {}
  }
 ]
}