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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Pickling is losing some fields on exceptions","articleBody":"# Bug report\r\n\r\nSay we have an AttributeError with some fields on it (like name). When we pickle and unpickle it, we can see that .name (at least) is lost (and set to None). Optimally those fields should still be in-tact on the unpickled instance.\r\n\r\n```\r\nC:\\Users\\csm10495\\Desktop\u003epython\r\nPython 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)] on win32\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e import pickle\r\n\u003e\u003e\u003e a = AttributeError(\"test text\", name=\"test name\", obj=\"test obj\")\r\n\u003e\u003e\u003e a.name\r\n'test name'\r\n\u003e\u003e\u003e pickle.loads(pickle.dumps(a)).name\r\n\u003e\u003e\u003e pickle.loads(pickle.dumps(a))\r\nAttributeError('test text')\r\n```\r\n\r\n# Your environment\r\n\r\n```\r\nC:\\Users\\csm10495\\Desktop\u003epython --version\r\nPython 3.11.0\r\n\r\nC:\\Users\\csm10495\\Desktop\u003ever\r\n\r\nMicrosoft Windows [Version 10.0.19045.2364]\r\n\r\nC:\\Users\\csm10495\\Desktop\u003e\r\n```\r\n\r\nSame thing seems to happen on 3.10.7 and 3.11.3 as well.\r\n\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-103352\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/csm10495","@type":"Person","name":"csm10495"},"datePublished":"2023-04-07T06:24:13.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/103333/cpython/issues/103333"}