9_The_chase.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# \"Let's cut to the chase\"\n",
    "## Voici un petit exercice de collecte, exploration, analyse de données."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "On utilisera le jeu de données \"Stations Vélo'v de la Métropole de Lyon - disponibilité temps réel\"\n",
    "\n",
    "https://data.grandlyon.com/jeux-de-donnees/stations-velo-v-metropole-lyon-disponibilite-temps-reel/donnees"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Collecte"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "L'URL suivante permet d'effectuer une requête WFS, restituant un document de type GeoJSON dans le système de projection EPSG:2154, http://epsg.io/2154"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {},
   "outputs": [],
   "source": [
    "url = \"https://download.data.grandlyon.com/wfs/rdata?SERVICE=WFS&VERSION=2.0.0&request=GetFeature&typename=jcd_jcdecaux.jcdvelov&outputFormat=application/json;%20subtype=geojson&SRSNAME=EPSG:2154&count=500&startIndex=1\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {},
   "outputs": [],
   "source": [
    "import requests\n",
    "\n",
    "proxies = {\n",
    "    'http': 'http://proxyhttp1pro:8080',\n",
    "    'https': 'http://proxyhttp1pro:8080'\n",
    "}\n",
    "\n",
    "s = requests.Session()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [],
   "source": [
    "s.proxies = proxies\n",
    "s.proxies = None"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [],
   "source": [
    "response = s.get(url)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['__attrs__',\n",
       " '__bool__',\n",
       " '__class__',\n",
       " '__delattr__',\n",
       " '__dict__',\n",
       " '__dir__',\n",
       " '__doc__',\n",
       " '__enter__',\n",
       " '__eq__',\n",
       " '__exit__',\n",
       " '__format__',\n",
       " '__ge__',\n",
       " '__getattribute__',\n",
       " '__getstate__',\n",
       " '__gt__',\n",
       " '__hash__',\n",
       " '__init__',\n",
       " '__init_subclass__',\n",
       " '__iter__',\n",
       " '__le__',\n",
       " '__lt__',\n",
       " '__module__',\n",
       " '__ne__',\n",
       " '__new__',\n",
       " '__nonzero__',\n",
       " '__reduce__',\n",
       " '__reduce_ex__',\n",
       " '__repr__',\n",
       " '__setattr__',\n",
       " '__setstate__',\n",
       " '__sizeof__',\n",
       " '__str__',\n",
       " '__subclasshook__',\n",
       " '__weakref__',\n",
       " '_content',\n",
       " '_content_consumed',\n",
       " '_next',\n",
       " 'apparent_encoding',\n",
       " 'close',\n",
       " 'connection',\n",
       " 'content',\n",
       " 'cookies',\n",
       " 'elapsed',\n",
       " 'encoding',\n",
       " 'headers',\n",
       " 'history',\n",
       " 'is_permanent_redirect',\n",
       " 'is_redirect',\n",
       " 'iter_content',\n",
       " 'iter_lines',\n",
       " 'json',\n",
       " 'links',\n",
       " 'next',\n",
       " 'ok',\n",
       " 'raise_for_status',\n",
       " 'raw',\n",
       " 'reason',\n",
       " 'request',\n",
       " 'status_code',\n",
       " 'text',\n",
       " 'url']"
      ]
     },
     "execution_count": 56,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "dir(response)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 57,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "200"
      ]
     },
     "execution_count": 57,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "response.status_code"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 58,
   "metadata": {},
   "outputs": [],
   "source": [
    "assert response.status_code == 200"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 59,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'Date': 'Mon, 09 Mar 2020 22:31:13 GMT', 'Server': 'Apache', 'Access-Control-Allow-Credentials': 'true', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Headers': 'Origin, X-Requested-With, Content-Type, Accept, Authorization', 'Access-Control-Allow-Methods': 'GET,POST,OPTIONS,DELETE,PUT', 'Content-Type': 'application/json; subtype=geojson', 'Vary': 'Accept-Encoding', 'Content-Encoding': 'gzip', 'Connection': 'close', 'Transfer-Encoding': 'chunked'}"
      ]
     },
     "execution_count": 59,
     "metadata": {},
     "output_type": "execute_result"