Method _checkin

lib/sqlalchemy/pool/base.py:1391–1400

(self, transaction_was_reset: bool = False)

        return _ConnectionFairy._checkout(self._pool, fairy=self)

    def _checkin(self, transaction_was_reset: bool = False) -> None:
        _finalize_fairy(
            self.dbapi_connection,
            self._connection_record,
            self._pool,
            None,
            self._echo,
            transaction_was_reset=transaction_was_reset,
            fairy=self,
        )

    def _close(self) -> None:
        self._checkin()