events.py 文件源码

def engine_disposed(self, engine):
        """Intercept when the :meth:`.Engine.dispose` method is called.

        The :meth:`.Engine.dispose` method instructs the engine to
        "dispose" of it's connection pool (e.g. :class:`.Pool`), and
        replaces it with a new one.  Disposing of the old pool has the
        effect that existing checked-in connections are closed.  The new
        pool does not establish any new connections until it is first used.

        This event can be used to indicate that resources related to the
        :class:`.Engine` should also be cleaned up, keeping in mind that the
        :class:`.Engine` can still be used for new requests in which case
        it re-acquires connection resources.

        .. versionadded:: 1.0.5

        """