Using Google Maps geocoder from Python with urllib2

Question

I'm trying to use the Google Maps geocoder with Python and JSON, but keep being told I have a bad request:

add = "Buckingham Palace, London, SW1A 1AA"
geocode_url = "https://maps.googleapis.com/maps/api/geocode/json?address=%s&sensor=false&region=uk" % add
print geocode_url
req = urllib2.urlopen(geocode_url)
jsonResponse = json.loads(f.read())
pprint.pprint(nest)

This fails with urllib2.HTTPError: HTTP Error 400: Bad Request.

But if I simply copy and paste

https://maps.googleapis.com/maps/api/geocode/json?address=Buckingham%20Palace,%20London,%20SW1A%201AA&sensor=false&region=uk

into a browser bar, it works fine.

What is wrong with my request?

plaisthos · Accepted Answer · 2012-03-27 06:55:48Z

6

You need some URL quoting encoding, this works:

import urllib2
import pprint
import json
add = "Buckingham Palace, London, SW1A 1AA"
add = urllib2.quote(add)
geocode_url = "http://maps.googleapis.com/maps/api/geocode/json?address=%s&sensor=false&region=uk" % add
print geocode_url
req = urllib2.urlopen(geocode_url)
jsonResponse = json.loads(req.read())
pprint.pprint(jsonResponse)

The line add = urllib2.quote(add) is the important point. If you have non latin characters be advised that the google API needs UTF-8 encoding.

answered Mar 27, 2012 at 6:55

plaisthos

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