pickletester.py 文件源码

def test_compat_pickle(self):
        tests = [
            (range(1, 7), '__builtin__', 'xrange'),
            (map(int, '123'), 'itertools', 'imap'),
            (functools.reduce, '__builtin__', 'reduce'),
            (dbm.whichdb, 'whichdb', 'whichdb'),
            (Exception(), 'exceptions', 'Exception'),
            (collections.UserDict(), 'UserDict', 'IterableUserDict'),
            (collections.UserList(), 'UserList', 'UserList'),
            (collections.defaultdict(), 'collections', 'defaultdict'),
        ]
        for val, mod, name in tests:
            for proto in range(3):
                with self.subTest(type=type(val), proto=proto):
                    pickled = self.dumps(val, proto)
                    self.assertIn(('c%s\n%s' % (mod, name)).encode(), pickled)
                    self.assertIs(type(self.loads(pickled)), type(val))