gh-136492: Add `FrameLocalsProxyType` to `types` #136546

ZeroIntensity · 2025-07-11T14:27:42Z

Expose PEP-667's FrameLocalsProxy type as FrameLocalsProxyType in the types module.

Issue: FrameLocalsProxy (PEP 667) is not registered as a subclass of abc.Mapping #136492

📚 Documentation preview 📚: https://cpython-previews--136546.org.readthedocs.build/en/136546/library/types.html#types.FrameLocalsProxyType

Doc/whatsnew/3.15.rst

Lib/test/test_types.py

ZeroIntensity · 2025-07-11T15:14:01Z

Ugh, those test failures look like an existing bug on FrameLocalsProxy.

picnixz · 2025-07-11T17:00:18Z

@python/organization-owners Could you block blockchainGuru1018 for spam & misguided reviews? TiA.

Doc/library/types.rst

gaogaotiantian · 2025-07-11T19:16:27Z

Ugh, those test failures look like an existing bug on FrameLocalsProxy.

Could you be more specific? Maybe raise an issue for that so I can fix it later?

ZeroIntensity · 2025-07-11T19:33:12Z

Could you be more specific? Maybe raise an issue for that so I can fix it later?

There were a few things I had to skip in test_inspect. I think they're bugs, but I haven't investigated the test enough to be sure.

gaogaotiantian · 2025-07-11T19:51:27Z

Okay now we need some typing expert to review this. @JelleZijlstra maybe?

ZeroIntensity · 2025-07-12T12:59:33Z

I'd also appreciate it if @AA-Turner could take a look; he's done some recent work with types and _types.

JelleZijlstra · 2025-07-12T16:34:50Z

You don't really need a static typing expert for the types module; it predates static typing and is useful even without static typing. The PR seems pretty straightforward to me.

Doc/whatsnew/3.15.rst

Lib/test/test_inspect/test_inspect.py

Lib/types.py

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

…nsity/cpython into frameslocalsproxy-types

Misc/NEWS.d/next/Library/2025-07-11-10-23-44.gh-issue-136492.BVi5h0.rst

Doc/library/types.rst

AA-Turner · 2025-07-15T08:22:31Z

Lib/test/test_types.py

@@ -58,6 +58,7 @@ def test_names(self):
            'MethodDescriptorType', 'MethodType', 'MethodWrapperType',
            'ModuleType', 'NoneType', 'NotImplementedType', 'SimpleNamespace',
            'TracebackType', 'UnionType', 'WrapperDescriptorType',
+            'FrameLocalsProxyType'


Please keep the list sorted (GH doesn't let me add a suggestion)

I had that originally but @picnixz had reservations about it.

I think it's better to keep the list sorted rather than attempt to minimise 3-4 lines of diff here.

My suggestion was to keep it sorted but by just adding the export on its own line.

Sorry, missed this. I've updated it now; does that look better?

Lib/test/test_types.py

Lib/types.py

Objects/frameobject.c

Doc/whatsnew/3.15.rst

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

This reverts commit 58e8577.

This reverts commit 22c2bbe.

…nsity/cpython into frameslocalsproxy-types

This reverts commit fee5256.

Should I test before I push my changes? Yes. Will I ever do it? No.

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Lib/test/test_inspect/test_inspect.py

AA-Turner

Thanks!

A

Objects/frameobject.c

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

ZeroIntensity · 2025-07-20T17:33:43Z

Any final objections before I merge this?

AA-Turner · 2025-07-20T18:10:02Z

All good with me.

A

ZeroIntensity added 8 commits July 11, 2025 10:12

Expose FrameLocalsProxy in types and _types

78b842c

Add a test case.

e2ddcbe

Add a documentation entry.

22e056d

Use the 'type' suffix.

b8fd733

Add a whatsnew entry.

abbe1d3

Add blurb.

753c9bc

Fix the tests.

b087d9b

Sort the name alphabetically.

1971a14

ZeroIntensity requested a review from gaogaotiantian July 11, 2025 14:27

bedevere-app bot added the awaiting core review label Jul 11, 2025

bedevere-app bot mentioned this pull request Jul 11, 2025

FrameLocalsProxy (PEP 667) is not registered as a subclass of abc.Mapping #136492

Closed

Sort alphabetically in _types.

fdeb2d0

picnixz reviewed Jul 11, 2025

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ZeroIntensity added 3 commits July 11, 2025 11:08

Move whatsnew section.

c8600b9

Somewhat fix the tests.

70cc4db

Reduce the diff.

fee5256

Use a workaround for the tests.

a110148

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gaogaotiantian reviewed Jul 11, 2025

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gaogaotiantian reviewed Jul 11, 2025

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Move PEP note and remove locals() reference.

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JelleZijlstra reviewed Jul 12, 2025

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Update Doc/whatsnew/3.15.rst

fb710eb

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Add a signature for FrameLocalsProxy()

5923263

ZeroIntensity requested a review from markshannon as a code owner July 12, 2025 20:58

ZeroIntensity added 4 commits July 15, 2025 03:54

Change the tp_name to types.FrameLocalsProxyType.

22c2bbe

Merge branch 'main' into frameslocalsproxy-types

9bca253

Fix type name in test_frame.

58e8577

Merge branch 'frameslocalsproxy-types' of https://github.com/zerointe…

bdabeaf

…nsity/cpython into frameslocalsproxy-types

AA-Turner reviewed Jul 15, 2025

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Apply suggestions from code review

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Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

AA-Turner changed the title ~~gh-136492: Add FrameLocalsProxy to types~~ gh-136492: Add FrameLocalsProxyType to types Jul 15, 2025

ZeroIntensity and others added 7 commits July 15, 2025 04:40

Revert "Fix type name in test_frame."

e0f674d

This reverts commit 58e8577.

Revert "Change the tp_name to types.FrameLocalsProxyType."

faa4cf4

This reverts commit 22c2bbe.

Merge branch 'frameslocalsproxy-types' of https://github.com/zerointe…

ca05198

…nsity/cpython into frameslocalsproxy-types

Revert "Reduce the diff."

0463c30

This reverts commit fee5256.

Fix tests that were broken by the tp_name revert.

59daace

Should I test before I push my changes? Yes. Will I ever do it? No.

Unify how FrameType and FrameLocalsProxyType are created.

349374d

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Keep it sorted but with a smaller diff.

287c993

AA-Turner reviewed Jul 20, 2025

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trailing comma

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AA-Turner approved these changes Jul 20, 2025

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bedevere-app bot added awaiting merge and removed awaiting core review labels Jul 20, 2025

Update frameobject.c

63e263e

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

AA-Turner added the sprint label Jul 20, 2025

ZeroIntensity merged commit 8f59fbb into python:main Jul 20, 2025
43 checks passed

bedevere-app bot removed the awaiting merge label Jul 20, 2025

ZeroIntensity deleted the frameslocalsproxy-types branch July 20, 2025 18:49

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gh-136492: Add FrameLocalsProxyType to types #136546

gh-136492: Add FrameLocalsProxyType to types #136546

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gh-136492: Add `FrameLocalsProxyType` to `types` #136546

gh-136492: Add `FrameLocalsProxyType` to `types` #136546

ZeroIntensity commented Jul 11, 2025 •

edited

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