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[3.15] gh-151665: Fix inspect.signature() on type alias and type parameter e…#151787

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[3.15] gh-151665: Fix inspect.signature() on type alias and type parameter e…#151787
JelleZijlstra merged 1 commit into
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deadlovelll:gh-151665-inspect-format-param-3.15

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@deadlovelll

@deadlovelll deadlovelll commented Jun 20, 2026

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Fixes the inspect.signature() failure on the lazy evaluators of type aliases and type parameters, whose hidden .format parameter is now shown as format. This fix intended only for 3.15 and lower versions

For more details see gh-151665

@bedevere-app bedevere-app Bot mentioned this pull request Jun 20, 2026
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@deadlovelll deadlovelll changed the title gh-151665: Fix inspect.signature() on type alias and type parameter e… [3.15] gh-151665: Fix inspect.signature() on type alias and type parameter e… Jun 20, 2026
@JelleZijlstra JelleZijlstra added needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Jun 20, 2026
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JelleZijlstra approved these changes Jun 20, 2026
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Thank you! Looks good, but let's get the main branch fix in first.

@JelleZijlstra JelleZijlstra merged commit 453714a into python:3.15 Jun 21, 2026
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@miss-islington-app

miss-islington-app Bot commented Jun 21, 2026

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Thanks @deadlovelll for the PR, and @JelleZijlstra for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

@miss-islington-app

miss-islington-app Bot commented Jun 21, 2026

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Sorry, @deadlovelll and @JelleZijlstra, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 453714a2dc0d16e6e6b8cff70801dfc1284bf74d 3.13

@bedevere-app

bedevere-app Bot commented Jun 21, 2026

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GH-151880 is a backport of this pull request to the 3.14 branch.

@bedevere-app bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Jun 21, 2026
@JelleZijlstra

JelleZijlstra commented Jun 21, 2026

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Thanks @deadlovelll! Are you interested in adding the manual 3.13 backport?

JelleZijlstra pushed a commit that referenced this pull request Jun 21, 2026
@miss-islington @deadlovelll
[3.14] gh-151665: Fix inspect.signature() on type alias and type para…
6d6b0c5 
…meter evaluators (GH-151787) (#151880)

[3.15] gh-151665: Fix inspect.signature() on type alias and type parameter evaluators (GH-151787)
(cherry picked from commit 453714a)

Co-authored-by: Timofei <128279579+deadlovelll@users.noreply.github.com>
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