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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"unittest.mock.create_autospec() can crash when accessing properties from objects","articleBody":"\u003c!--\r\n  If you're new to Python and you're not sure whether what you're experiencing is a bug, the CPython issue tracker is not\r\n  the right place to seek help. Consider the following options instead:\r\n\r\n  - reading the Python tutorial: https://docs.python.org/3/tutorial/\r\n  - posting in the \"Users\" category on discuss.python.org: https://discuss.python.org/c/users/7\r\n  - emailing the Python-list mailing list: https://mail.python.org/mailman/listinfo/python-list\r\n  - searching our issue tracker (https://github.com/python/cpython/issues) to see if\r\n    your problem has already been reported\r\n--\u003e\r\n\r\n# Bug report\r\n\r\nThis crashes. It should not.\r\n```\r\nfrom unittest.mock import create_autospec\r\n\r\nclass X:\r\n    @property\r\n    def myprop(self):\r\n        raise Exception(\"some bug\")\r\n\r\ncreate_autospec(X())\r\n```\r\n\r\nNow you could tell for me to fix `X`. The problem though is that in my project the problem is much more complex. X is some other class that is being autospeced and the getter touches some mock objects it does not like.\r\n\r\n# Your environment\r\n\r\n- CPython versions tested on: 3.10\r\n- Operating system and architecture: Windows\r\n\r\n# Fix\r\n\r\n```\r\n--- a\\unittest\\mock.py\r\n+++ b\\unittest\\mock.py\r\n         for attr in dir(spec):\r\n-            if iscoroutinefunction(getattr(spec, attr, None)):\r\n-                _spec_asyncs.append(attr)\r\n+            try::\r\n+                value = getattr(spec, attr, None)\r\n+            except:\r\n+                pass\r\n+            else:\r\n+                if iscoroutinefunction(value):\r\n+                    _spec_asyncs.append(attr)\r\n```","author":{"url":"https://github.com/joaoe","@type":"Person","name":"joaoe"},"datePublished":"2022-10-15T21:03:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/98301/cpython/issues/98301"}