pi_demo.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "https://hub.mybinder.org/user/kmader-simple-pyspark-binder-c37841zq/proxy/8080/\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<iframe src=\"https://hub.mybinder.org/user/kmader-simple-pyspark-binder-c37841zq/proxy/8080/\">"
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from IPython.display import HTML\n",
    "import os\n",
    "port = 8080\n",
    "in_binder ='JUPYTERHUB_SERVICE_PREFIX' in os.environ\n",
    "if in_binder:\n",
    "    base_prefix = '{}proxy/{}/'.format(os.environ['JUPYTERHUB_SERVICE_PREFIX'], port)\n",
    "    url = 'https://hub.mybinder.org{}'.format(base_prefix)\n",
    "else:\n",
    "    url = 'http://localhost:%d' % port\n",
    "print(url)\n",
    "HTML('<iframe src=\"{}\">'.format(url))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "3.14172928\n"
     ]
    }
   ],
   "source": [
    "import pyspark\n",
    "import random\n",
    "sc = pyspark.SparkContext(appName=\"Pi\")\n",
    "num_samples = 100000000\n",
    "def inside(p):     \n",
    "  x, y = random.random(), random.random()\n",
    "  return x*x + y*y < 1\n",
    "count = sc.parallelize(range(0, num_samples)).filter(inside).count()\n",
    "pi = 4 * count / num_samples\n",
    "print(pi)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "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": "3.6.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}