'Fetch the sequence of twitter.User instances, one for each follower
The twitter.Api instance must be authenticated.
Returns:
A sequence of twitter.User instances, one for each follower'

def GetFollowers(self, page=None):

    if (not self._username):
        raise TwitterError('twitter.Api    instance    must    be    authenticated')
    url = (TWITTER_API_ROOT + 'statuses/followers.json')
    parameters = {}
    if page:
        parameters['page'] = page
    json = self._FetchUrl(url, parameters=parameters)
    data = simplejson.loads(json)
    self._CheckForTwitterError(data)
    return [User.NewFromJsonDict(x) for x in data]
