def test_deferred_instance_event_subclass_no_propagate(self):
        users, User = (self.tables.users,
                       self.classes.User)

        class SubUser(User):
            pass

        canary = []

        def evt(x):
            canary.append(x)
        event.listen(User, "load", evt, propagate=False)

        m = mapper(SubUser, users)
        m.class_manager.dispatch.load(5)
        eq_(canary, [])
Return a zero C{datetime.timedelta} for the daylight saving time offset,
dataset/ETHPy150Open zzzeek/sqlalchemy/test/orm/test_events.py/DeferredMapperEventsTest.test_deferred_instance_event_subclass_no_propagate--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/protocols/amp.py/_FixedOffsetTZInfo.dst