def test_lookup(self):
        assert event.Priority.lookup(event.Priority.CORE) is event.Priority.CORE
        assert event.Priority.lookup(event.Priority.CORE.value) is event.Priority.CORE
        assert event.Priority.lookup(-12312412) == -12312412
def get_bind(self, mapper=None, **kwargs):
                    return super(MySession, self).get_bind(
                        mapper=mapper, **kwargs
                    )