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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`types.GeneratorType.gi_frame` should be `FrameType | None`","articleBody":"https://github.com/python/typeshed/blob/7fde97036f692b269cbb82ae5fd6c933064000c8/stdlib/types.pyi#L402-L403\n\nThis issue is similar to #14780. The `gi_frame` property becomes `None` when the generator iterator completes:\n\n```python\n\u003e\u003e\u003e def generator_function():\n...     return\n...     yield\n\u003e\u003e\u003e gen = generator_function()\n\u003e\u003e\u003e gen.gi_frame\n\u003cframe at 0x7f2ebe641620, file '\u003cstdin\u003e', line 1, code generator_function\u003e\n\u003e\u003e\u003e next(gen)  # consume\nTraceback (most recent call last):\n  File \"\u003cstdin\u003e\", line 1, in \u003cmodule\u003e\nStopIteration\n\u003e\u003e\u003e gen.gi_frame is None\nTrue\n```\n\nThe same applies to `AsyncGeneratorType.ag_frame`:\n\n```python\n\u003e\u003e\u003e async def asyncgen_function():\n...     return\n...     yield\n\u003e\u003e\u003e asyncgen = asyncgen_function()\n\u003e\u003e\u003e asyncgen.ag_frame\n\u003cframe at 0x7f37cf7d5c60, file '\u003cstdin\u003e', line 1, code asyncgen_function\u003e\n\u003e\u003e\u003e [*asyncgen.asend(None).__await__()]  # consume\nTraceback (most recent call last):\n  File \"\u003cstdin\u003e\", line 1, in \u003cmodule\u003e\nStopAsyncIteration\n\u003e\u003e\u003e asyncgen.ag_frame is None\nTrue\n```\n\nNotably, this was mentioned in both the linked issue and python/cpython#112428 (Python 3.12.1), to which it refers, but was ignored in the PR (#14802), meaning the issue was closed prematurely (why?). Moreover, none of the `*_frame` properties actually depend on the Python version. 3.12.0 introduced a regression, as mentioned in python/cpython#111058. The above examples (and a similar one for coroutine objects) can be easily reproduced even on Python 3.6:\n\n```python\nPython 3.6.15 (default, Apr 25 2022, 01:55:53) \n[GCC 9.4.0] on linux\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\n\u003e\u003e\u003e async def coroutine_function():\n...     pass\n\u003e\u003e\u003e coro = coroutine_function()\n\u003e\u003e\u003e coro.cr_frame\n\u003cframe object at 0x7fe26e728a08\u003e\n\u003e\u003e\u003e coro.send(None)  # consume\nTraceback (most recent call last):\n  File \"\u003cstdin\u003e\", line 1, in \u003cmodule\u003e\nStopIteration\n\u003e\u003e\u003e coro.cr_frame is None\nTrue\n```","author":{"url":"https://github.com/x42005e1f","@type":"Person","name":"x42005e1f"},"datePublished":"2026-01-05T10:13:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/15218/typeshed/issues/15218"}