test_re.py 文件源码

def test_pickling(self):
        import pickle
        oldpat = re.compile('a(?:b|(c|e){1,2}?|d)+?(.)', re.UNICODE)
        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
            pickled = pickle.dumps(oldpat, proto)
            newpat = pickle.loads(pickled)
            self.assertEqual(newpat, oldpat)
        # current pickle expects the _compile() reconstructor in re module
        from re import _compile