this module was created to test googleURLShorter api http://code.google.com/intl/ja/apis/urlshortener/v1/getting_started.html

GoogleURLShorter.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import urllib2
import json
API_KEY = ""

class GoogleURLShorter(object):
    def __init__(self, target_url, api_key=""):
        self.baseUrl = 'https://www.googleapis.com/urlshortener/v1/url'
        self.api_key = api_key
        self.target_url = target_url
        self.shortUrl = ''

    def shortenURL(self):
        query = {'longUrl' : self.target_url}
        if not self.api_key == "":
            query["key"] = self.api_key
        encoded_query = json.dumps(query)
        request = urllib2.Request(self.baseUrl, encoded_query)
        request.add_header("Content-Type", "application/json")
        response = urllib2.urlopen(request)
        
        if response.msg == "OK":
            response = json.loads(response.read())
            self.shortUrl = response.get('id', None)
        return self.shortUrl

    def expandURL(self, target_url = ''):
        if target_url == "":
            target_url = self.shortUrl
        if target_url == "":
            raise Exception("URLをセットしてください。")
        if not self.api_key == "":
            response = urllib2.urlopen("%s?shortUrl=%s&key=%s" %
                                       (self.baseUrl, target_url, self.api_key))
        else:
            response = urllib2.urlopen("%s?shortUrl=%s" %
                                       (self.baseUrl, target_url))
        if response.msg == "OK":
            response = json.loads(response.read())
            self.longUrl = response.get('longUrl', None)
        return self.longUrl
    
if __name__ == '__main__':
    test = GoogleURLShorter("http://d.hatena.ne.jp/yasuharu519/", API_KEY)
    res = test.shortenURL()
    print res
    res = test.expandURL()
    print res