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 test_impl(df):
            A = df.A.str.split(',')
            B = pd.Series(list(itertools.chain(*A)))
            return B