bpo-37251: Removes code check from _is_async_obj. by lisroach · Pull Request #15830 · python/cpython (original) (raw)
It should be possible that an awaitable object does not have a __code__, so technically checking for the __code__ attribute in _is_async_obj is incorrect. This faulty code check is also why things like: mock.MagicMock(spec=lambda x: x) evaluate to True, even though they are not asynchronous.