René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Bug in linecache when raising exceptiongroup that contains `ZeroDivisionError` + other exception.","articleBody":"# Bug report\r\n\r\nConsider this code:\r\n\r\n```python\r\nfrom asyncio import run, TaskGroup\r\n\r\nasync def bad_function():\r\n    raise ZeroDivisionError\r\nasync def bad_function2():\r\n    raise KeyError\r\n\r\nasync def main():\r\n    try:\r\n        async with TaskGroup() as tg:\r\n            tg.create_task(bad_function())\r\n            tg.create_task(bad_function2())\r\n\r\n    except* ZeroDivisionError as e:\r\n        breakpoint()\r\n\r\n\r\nrun(main())\r\n```\r\n\r\nRun it on Python 3.11 or 3.12:\r\n\r\n```pytb\r\n--Return--\r\nTraceback (most recent call last):\r\n  File \"....py\", line 18, in \u003cmodule\u003e\r\n    run(main())\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/asyncio/runners.py\", line 190, in run\r\n    return runner.run(main)\r\n           ^^^^^^^^^^^^^^^^\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/asyncio/runners.py\", line 118, in run\r\n    return self._loop.run_until_complete(task)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/asyncio/base_events.py\", line 650, in run_until_complete\r\n    return future.result()\r\n           ^^^^^^^^^^^^^^^\r\n  File \".....py\", line -1, in main\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/bdb.py\", line 94, in trace_dispatch\r\n    return self.dispatch_return(frame, arg)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/bdb.py\", line 153, in dispatch_return\r\n    self.user_return(frame, arg)\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/pdb.py\", line 372, in user_return\r\n    self.interaction(frame, None)\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/pdb.py\", line 434, in interaction\r\n    self.print_stack_entry(self.stack[self.curindex])\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/pdb.py\", line 1554, in print_stack_entry\r\n    self.format_stack_entry(frame_lineno, prompt_prefix))\r\n    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/bdb.py\", line 573, in format_stack_entry\r\n    line = linecache.getline(filename, lineno, frame.f_globals)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/jonathan/.pyenv/versions/3.11.0/lib/python3.11/linecache.py\", line 31, in getline\r\n    if 1 \u003c= lineno \u003c= len(lines):\r\nTypeError: '\u003c=' not supported between instances of 'int' and 'NoneType'\r\n```\r\n\r\nOne of the exceptions has to be a `ZeroDivisionError` for it to happen as far as I can see.\r\n\r\n# Your environment\r\n\r\n- CPython versions tested on: 3.11, 3.12\r\n- Operating system and architecture: Linux, M1, arm64\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-101663\n* gh-101768\n* gh-101787\n* gh-101793\n* gh-101794\n* gh-103529\n* gh-103547\n* gh-103550\n* gh-103816\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/jonathanslenders","@type":"Person","name":"jonathanslenders"},"datePublished":"2023-02-02T16:09:03.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":30},"url":"https://github.com/101517/cpython/issues/101517"}