Get the attribute of an iTunes Store's application by bundle Id

gistfile1.py

# encoding: utf-8
import requests, json

APPSTORE_URL = "http://itunes.apple.com/lookup?bundleId=";


def get_app_data_by_bundle_id(bundle_id):
    """Queries the iTunes store by app's bundle Id and if
    the app exists, returns the app's data (dict)"""
    
    query_result = requests.get(APPSTORE_URL+bundle_id).text
    query_json = json.loads(query_result)
    
    if query_json.get('resultCount') > 0:
        # bundle_id is unique, no more than 1 result
        app_data = query_json.get(u'results')[0]
        return app_data
    else:
        raise Exception("Invalid application bundle Id: %s" % bundle_id)

def get_app_attr(bundle_id, attr):
    """Returns the given attribute from an app by bundle id"""
    
    app_data = get_app_data_by_bundle_id(bundle_id)
    return app_data[attr]