gh-78526: Add tests for PEP 468 and PEP 520 - #155387
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serhiy-storchaka merged 1 commit intoAug 13, 2026
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Test that the order of keyword arguments and the order of class attribute definitions are preserved.
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Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14, 3.15. |
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GH-155676 is a backport of this pull request to the 3.15 branch. |
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GH-155677 is a backport of this pull request to the 3.14 branch. |
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GH-155678 is a backport of this pull request to the 3.13 branch. |
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There were almost no explicit tests for PEP 468 (Preserving Keyword Argument Order) and none for PEP 520 (Preserving Class Attribute Definition Order). Both work now only as a side effect of the dict order, so breaking them in some path would not be detected.
Added tests for the order of keyword arguments in functions, methods and C functions, and for the order of class attribute definitions in the class dict, in the namespace passed to the metaclass and in the mapping returned by
type.__prepare__().