test_final.py 文件源码

def test_subclass_setattr(self):
        """
        Tests that subclasses don't destroy the __setattr__.
        """
        class ClassWithFinal(with_metaclass(FinalMeta, object)):
            @final
            def f(self):
                return 'ClassWithFinal: f'

        class SubClass(ClassWithFinal):
            def __init__(self):
                self.a = 'a'

        SubClass()
        self.assertEqual(SubClass().a, 'a')
        self.assertEqual(SubClass().f(), 'ClassWithFinal: f')