test_collections.py 文件源码

def test_Sequence(self):
        for sample in [tuple, list, bytes, str]:
            self.assertIsInstance(sample(), Sequence)
            self.assertTrue(issubclass(sample, Sequence))
        self.assertIsInstance(range(10), Sequence)
        self.assertTrue(issubclass(range, Sequence))
        self.assertTrue(issubclass(str, Sequence))
        self.validate_abstract_methods(Sequence, '__contains__', '__iter__', '__len__',
            '__getitem__')