test_enum.py 文件源码

def test_attribute_deletion(self):
        class Season(Enum):
            SPRING = 1
            SUMMER = 2
            AUTUMN = 3
            WINTER = 4

            def spam(cls):
                pass

        self.assertTrue(hasattr(Season, 'spam'))
        del Season.spam
        self.assertFalse(hasattr(Season, 'spam'))

        with self.assertRaises(AttributeError):
            del Season.SPRING
        with self.assertRaises(AttributeError):
            del Season.DRY
        with self.assertRaises(AttributeError):
            del Season.SPRING.name