test_inspect.py 文件源码

def test_signature_on_partialmethod(self):
        from functools import partialmethod

        class Spam:
            def test():
                pass
            ham = partialmethod(test)

        with self.assertRaisesRegex(ValueError, "has incorrect arguments"):
            inspect.signature(Spam.ham)

        class Spam:
            def test(it, a, *, c) -> 'spam':
                pass
            ham = partialmethod(test, c=1)

        self.assertEqual(self.signature(Spam.ham),
                         ((('it', ..., ..., 'positional_or_keyword'),
                           ('a', ..., ..., 'positional_or_keyword'),
                           ('c', 1, ..., 'keyword_only')),
                          'spam'))

        self.assertEqual(self.signature(Spam().ham),
                         ((('a', ..., ..., 'positional_or_keyword'),
                           ('c', 1, ..., 'keyword_only')),
                          'spam'))