test_pathlib.py 文件源码

def _check_str_subclass(self, *args):
        # Issue #21127: it should be possible to construct a PurePath object
        # from an str subclass instance, and it then gets converted to
        # a pure str object.
        class StrSubclass(str):
            pass
        P = self.cls
        p = P(*(StrSubclass(x) for x in args))
        self.assertEqual(p, P(*args))
        for part in p.parts:
            self.assertIs(type(part), str)