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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`Tuple[...]` is allowed since 3.11+ (gh-31021)","articleBody":"Before `TypeVarTuple` support was megred, this is what happened when `Tuple[...]` was used:\r\n\r\n```\r\nPython 3.10.0 (default, Nov  1 2021, 10:24:06) [Clang 11.0.0 (clang-1100.0.33.16)] on darwin\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e from typing import Tuple\r\n\u003e\u003e\u003e Tuple[...]\r\nTraceback (most recent call last):\r\n  File \"\u003cstdin\u003e\", line 1, in \u003cmodule\u003e\r\n  File \"/Users/sobolev/.pyenv/versions/3.10.0/lib/python3.10/typing.py\", line 309, in inner\r\n    return func(*args, **kwds)\r\n  File \"/Users/sobolev/.pyenv/versions/3.10.0/lib/python3.10/typing.py\", line 1210, in __getitem__\r\n    params = tuple(_type_check(p, msg) for p in params)\r\n  File \"/Users/sobolev/.pyenv/versions/3.10.0/lib/python3.10/typing.py\", line 1210, in \u003cgenexpr\u003e\r\n    params = tuple(_type_check(p, msg) for p in params)\r\n  File \"/Users/sobolev/.pyenv/versions/3.10.0/lib/python3.10/typing.py\", line 173, in _type_check\r\n    raise TypeError(f\"{msg} Got {arg!r:.100}.\")\r\nTypeError: Tuple[t0, t1, ...]: each t must be a type. Got Ellipsis.\r\n```\r\n\r\nSince `3.11` it is allowed:\r\n\r\n```\r\nPython 3.12.0a0 (heads/main-dirty:a36235d5c7, Sep 11 2022, 12:23:24) [Clang 11.0.0 (clang-1100.0.33.16)] on darwin\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e from typing import Tuple\r\n\u003e\u003e\u003e Tuple[...]\r\ntyping.Tuple[...]\r\n```\r\n\r\nWhat should we do?\r\n1. Keep this as-is, provide a test that this is allowed (I don't know why anyone would use `tuple[...]`)\r\n2. Make sure that it is still an error with newer version: fix regression and add a test case\r\n\r\nIn both case I would like to send a PR :)\r\n\r\nRelated:\r\n- https://github.com/python/cpython/issues/87390\r\n- https://github.com/python/cpython/pull/31021\r\n\r\nCC @JelleZijlstra and @Fidget-Spinner ","author":{"url":"https://github.com/sobolevn","@type":"Person","name":"sobolevn"},"datePublished":"2022-09-13T11:35:04.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/96792/cpython/issues/96792"}