test_builtins.py 文件源码

def test_type(self):
        """
        The following fails when passed a unicode string on Python
        (including when unicode_literals is in effect) and fails when
        passed a byte-string on Python 3. So type() always wants a native
        string as the first argument.

        TODO: maybe provide a replacement that works identically on Py2/3?
        """
        mytype = type('blah', (dict,), {"old": 1, "new": 2})
        d = mytype()
        self.assertTrue(isinstance(d, mytype))
        self.assertTrue(isinstance(d, dict))