René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`traceback.walk_stack(None)` yields frames from higher in the stack on 3.11","articleBody":"eg:\r\n\r\n```\r\nPython 3.10.6 (main, Aug 10 2022, 11:40:04) [GCC 11.3.0] on linux\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e import traceback\r\n\u003e\u003e\u003e list(traceback.walk_stack(None))\r\n[]\r\n\u003e\u003e\u003e \r\n```\r\n\r\n```\r\nPython 3.11.0 | packaged by conda-forge | (main, Oct 25 2022, 06:18:27) [GCC 10.4.0] on linux\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e list(traceback.walk_stack(None))\r\nTraceback (most recent call last):\r\n  File \"\u003cstdin\u003e\", line 1, in \u003cmodule\u003e\r\n  File \"/home/graingert/anaconda3/envs/dask-distributed-311/lib/python3.11/traceback.py\", line 332, in walk_stack\r\n    f = sys._getframe().f_back.f_back.f_back.f_back\r\n        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\nAttributeError: 'NoneType' object has no attribute 'f_back'\r\n\u003e\u003e\u003e \r\n```\r\n\r\n_Originally posted by @graingert in https://github.com/python/cpython/pull/26958#discussion_r1012036670_\r\n      ","author":{"url":"https://github.com/graingert","@type":"Person","name":"graingert"},"datePublished":"2022-11-02T16:40:59.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/99013/cpython/issues/99013"}