test_collections.py 文件源码

def test_ByteString(self):
        for sample in [bytes, bytearray]:
            self.assertIsInstance(sample(), ByteString)
            self.assertTrue(issubclass(sample, ByteString))
        for sample in [str, list, tuple]:
            self.assertNotIsInstance(sample(), ByteString)
            self.assertFalse(issubclass(sample, ByteString))
        self.assertNotIsInstance(memoryview(b""), ByteString)
        self.assertFalse(issubclass(memoryview, ByteString))