turning in geocoding project toolbox

mbta_finder.py

@@ -10,23 +10,38 @@
 import urllib   # urlencode function
 import urllib2  # urlopen function (better than urllib version)
 import json
+from pprint import pprint
 
-
-# Useful URLs (you need to add the appropriate parameters for your requests)
 GMAPS_BASE_URL = "https://maps.googleapis.com/maps/api/geocode/json"
+GMAPS_API_KEY = "AIzaSyBAbkJTjX3Vk0eorBNKFAlIlbyH7NC4frg"
 MBTA_BASE_URL = "http://realtime.mbta.com/developer/api/v2/stopsbylocation"
 MBTA_DEMO_API_KEY = "wX9NwuHnZU2ToO7GmGR9uw"
 
-
-# A little bit of scaffolding if you want to use it
+def get_gmaps_url(location):
+    """
+    Gives the url needed for the Google Maps API for a given location.
+    """
+    url = GMAPS_BASE_URL + '?address='
+    words = location.split(' ')
+    for word in words[0:-1]:
+        url = url + word + '%20'
+    url = url + words[-1] + '&key=' + GMAPS_API_KEY
+    return url
+
+def get_mbta_url(lat, lon):
+    """
+    Gives the url needed for the mbta API for a given latitude and longitude
+    """
+    return MBTA_BASE_URL + '?api_key=' + MBTA_DEMO_API_KEY + '&lat=' + str(lat) + '&lon=' + str(lon) + '&format=json'
 
 def get_json(url):
     """
     Given a properly formatted URL for a JSON web API request, return
     a Python JSON object containing the response to that request.
     """
-    pass
-
+    f = urllib2.urlopen(url)
+    response_text = f.read()
+    return json.loads(response_text)
 
 def get_lat_long(place_name):
     """
@@ -36,7 +51,11 @@ def get_lat_long(place_name):
     See https://developers.google.com/maps/documentation/geocoding/
     for Google Maps Geocode API URL formatting requirements.
     """
-    pass
+    url = get_gmaps_url(place_name)
+    response_data = get_json(url)
+    latitude = response_data[u'results'][0][u'geometry'][u'location'][u'lat']
+    longitude = response_data[u'results'][0][u'geometry'][u'location'][u'lng']
+    return (latitude, longitude)
 
 
 def get_nearest_station(latitude, longitude):
@@ -47,13 +66,22 @@ def get_nearest_station(latitude, longitude):
     See http://realtime.mbta.com/Portal/Home/Documents for URL
     formatting requirements for the 'stopsbylocation' API.
     """
-    pass
+    url = get_mbta_url(latitude, longitude)
+    f = urllib2.urlopen(url)
+    response_text = f.read()
+    response_data = json.loads(response_text)
+    distance = response_data[u'stop'][0][u'distance']
+    stop_name = response_data[u'stop'][0][u'stop_name']
+    return (stop_name, distance)
 
 
 def find_stop_near(place_name):
     """
     Given a place name or address, print the nearest MBTA stop and the 
     distance from the given place to that stop.
+    >>>find_stop_near('Faneuil Hall')
+    The nearest stop is Congress St @ North St, which is 0.0524380765855312 miles away.
     """
-    pass
-
+    (lat, lon) = get_lat_long(place_name)
+    (stop_name, distance) = get_nearest_station(lat,lon)
+    print 'The nearest stop is ' + stop_name + ', which is ' + distance + ' miles away.'