code: def find_persons_by_type(self, type, nationality=None, gender=None,
                               firstletter=None, orderby='view-week-count',
                               page=1, count=20):
          
          url = 'https://openapi.youku.com/v2/persons/by_type.json'
          params = {
              'client_id': self.client_id,
              'type': type,
              'nationality': nationality,
              'gender': gender,
              'firstletter': firstletter,
              'orderby': orderby,
              'page': page,
              'count': count
          }
          params = remove_none_value(params)
          r = requests.get(url, params=params)
          check_error(r)
          return r.json()
docs: doc: http://open.youku.com/docs/docs?id=89