gh-137317: fix inspect signature of class with descriptor wrapper #137862
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Signed-off-by: GitHub <[email protected]>
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Thank you for your PR, @yanyongyu. LGTM. 👍
I only have few minor suggestions for tests.
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| with self.subTest('partial'): | ||
| class C: | ||
| __init__ = identity(functools.partial(lambda x, a, b: None, 2)) |
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Should not this be functools.partial(identity(lambda x, a, b: None), 2)? Although the "partial" and "partialmethod" subtests are not affected by all these changes, so I am not sure that it makes sense to keep them. If they do not fail, we cannot be sure that they are meaningful.
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Thank you for pointing out the error, I will correct this.
These test cases are based on the ones below (test_signature_on_class_with_init and test_signature_on_class_with_new), and I believe they need to be this detailed to catch potential bugs from changes made in inspect.signature's behavior.
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I added also tests for a wrapped metaclass' |
serhiy-storchaka
added
needs backport to 3.13
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Thanks @yanyongyu for the PR, and @serhiy-storchaka for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14. |
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Thanks @yanyongyu for the PR, and @serhiy-storchaka for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13. |
…t__ or __new__ (pythonGH-137862) Fixed several cases where __init__, __new__ or metaclass` __call__ is a descriptor that returns a wrapped function. (cherry picked from commit 025a213) Co-authored-by: Ju4tCode <[email protected]>
…t__ or __new__ (pythonGH-137862) Fixed several cases where __init__, __new__ or metaclass` __call__ is a descriptor that returns a wrapped function. (cherry picked from commit 025a213) Co-authored-by: Ju4tCode <[email protected]>
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GH-138224 is a backport of this pull request to the 3.14 branch. |
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GH-138225 is a backport of this pull request to the 3.13 branch. |
…t__ or __new__ (pythonGH-137862) Fixed several cases where __init__, __new__ or metaclass` __call__ is a descriptor that returns a wrapped function. (cherry picked from commit 025a213) Co-authored-by: Ju4tCode <[email protected]>
…it__ or __new__ (GH-137862) (GH-138225) Fixed several cases where __init__, __new__ or metaclass` __call__ is a descriptor that returns a wrapped function. (cherry picked from commit 025a213) Co-authored-by: Ju4tCode <[email protected]>
…t__ or __new__ (pythonGH-137862) Fixed several cases where __init__, __new__ or metaclass` __call__ is a descriptor that returns a wrapped function.
This PR fixes the
inspect.signaturebehavior when inspecting a class that uses descriptor (like classmethod/staticmethod/custom) with a wrapped__init__.This PR also adds more test cases not covered in PR #132055.
cyfunction __init__due to unwrap and descriptor behavior changed #137317