test_builtins.py 文件源码

def test_isinstance_long(self):
        """
        Py2's long doesn't inherit from int!
        """
        self.assertTrue(isinstance(10**100, int))
        self.assertTrue(isinstance(int(2**64), int))
        if not PY3:
            self.assertTrue(isinstance(long(1), int))
        # Note: the following is a SyntaxError on Py3:
        # self.assertTrue(isinstance(1L, int))