def _check_sum(self):
    if (self.client_id and self.client_secret and self.des_key and self.target_features and self.arguments and (len(self.target_features) == len(self.ret_msg))):
        return True
    else:
        return False
def _check_sum(self):
    if (self.client_id and self.client_secret and self.des_key and self.target_features and self.arguments and (len(self.target_features) == len(self.ret_msg))):
        return True
    else:
        return False