def DestroyFavorite(self, status):
    '''Un-favorites the status specified in the ID parameter as the authenticating user.
    Returns the un-favorited status in the requested format when successful.

    The twitter.Api instance must be authenticated.

    Args:
      The twitter.Status to unmark as a favorite.
    Returns:
      A twitter.Status instance representing the newly-unmarked favorite.
    '''
    url = TWITTER_API_ROOT + 'favorites/destroy/%s.json' % status.id
    json = self._FetchUrl(url, post_data={})
    data = simplejson.loads(json)
    self._CheckForTwitterError(data)
    return Status.NewFromJsonDict(data)
Un-favorites the status specified in the ID parameter as the authenticating user.
    Returns the un-favorited status in the requested format when successful.

    The twitter.Api instance must be authenticated.

    Args:
      The twitter.Status to unmark as a favorite.
    Returns:
      A twitter.Status instance representing the newly-unmarked favorite.
    
twitter/twitter.py