def __len__(self):
        return self._client.dbsize()
When consumer confirm the authorization.
dataset/ETHPy150Open lethain/Redis-Python-Datastructures/redis_ds/redis_dict.py/RedisDict.__len__--crossover with--dataset/ETHPy150Open codalab/codalab-cli/codalab/server/oauth2_provider.py/OAuth2Provider.confirm_authorization_request