def _args_for_conf(self, default_cfg, conf):
        if conf == None:
            return dict(
                (key, _Default.resolve(value))
                for key, value in default_cfg.items()
                if _Default.is_set(value)
            )
        else:
            return dict(
                (key, _Default.resolve_w_conf(value, conf.database, key))
                for key, value in default_cfg.items()
                if _Default.is_set_w_conf(value, conf.database, key)
            )
dataset/ETHPy150Open openstack/oslo.db/oslo_db/sqlalchemy/enginefacade.py/_TransactionFactory._args_for_conf/operator `is` -> `==`