Class AlsoBogus

Lib/test/datetimetester.py:3126–3128

        self.assertEqual(dt.replace(tzinfo=bog).astimezone(f), dt_f)

        class AlsoBogus(tzinfo):
            def utcoffset(self, dt): return timedelta(0)
            def dst(self, dt): return None
        alsobog = AlsoBogus()
        self.assertRaises(ValueError, dt.astimezone, alsobog) # also naive