def check_client_key(self, client_key):
        lower, upper = self.client_key_length
        return (set(client_key) <= self.safe_characters and
                lower <= len(client_key) <= upper)
Check that the client key only contains safe characters
dataset/ETHPy150Open idan/oauthlib/oauthlib/oauth1/rfc5849/request_validator.py/RequestValidator.check_client_key