code: def find_videos_by_related(self, video_id, count=20):
          
          url = 'https://openapi.youku.com/v2/videos/by_related.json'
          params = {
              'client_id': self.client_id,
              'video_id': video_id,
              'count': count
          }
          r = requests.get(url, params=params)
          check_error(r)
          return r.json()
docs: doc: http://open.youku.com/docs/doc?id=52