def test_pickle_of_parent_subclass(self):
        sess = Session()
        d = Point(3, 4)
        f1 = SubFoo(data=d)
        sess.add(f1)
        sess.commit()

        f1.data
        assert 'data' in f1.__dict__
        sess.close()

        for loads, dumps in picklers():
            sess = Session()
            f2 = loads(dumps(f1))
            sess.add(f2)
            f2.data.y = 12
            assert sess.dirty in f2
dataset/ETHPy150Open zzzeek/sqlalchemy/test/ext/test_mutable.py/MutableInheritedCompositesTest.test_pickle_of_parent_subclass/swapped operands of `in`