Description

eltoder

opened on Feb 13, 2023

Issue body actions

class C:
    @property
    def foo(self):
        return 1

assert C.foo.__name__ == "foo"

It would be very handy if this worked, so properties can be introspected the same way as functions, classmethods, etc. Name can be simply taken from fget the same way this is done for __isabstractmethod__.

Linked PRs

• gh-101860: Expose __name__ on property #101876
• gh-101860: document property.__name__ #123399
• [3.13] gh-101860: document property.__name__ (GH-123399) #123428

Activity

1. eltoder

   added

   type-featureA feature request or enhancementA feature request or enhancement

   on Feb 13, 2023
2. arhadthedev

   added

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   on Feb 13, 2023
3. sobolevn commented on Feb 13, 2023

   

   sobolevn

   on Feb 13, 2023

   Member

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   What about this case?

   >>> def getter(o):
   ...     return 42
   ... 
   >>> class Some:
   ...    number = property(getter)
   ... 
   >>> Some().number
   42

   Should it be 'getter'?
4. TeamSpen210 commented on Feb 13, 2023

   

   TeamSpen210

   on Feb 13, 2023

   More actions

   Actually, property already defines __set_name__(), storing the name internally for use in formatting AttributeErrors. That's called during class creation, so it'll be accurate regardless where the callable comes from. All that's needed is for that to be exposed. This was added in #71981, but it was kept private to avoid expanding the API since a need wasn't specified.
5. eltoder commented on Feb 13, 2023

   

   eltoder

   on Feb 13, 2023

   ContributorAuthor

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   @TeamSpen210 Nice find! I think the API expansion comments were about adding name as an argument to property constructor. Adding __name__ as a read-only attribute for introspection seems very much in the spirit of python.
6. eltoder

   added 4 commits that reference this issue on Feb 13, 2023

   pythongh-101860: Expose __name__ on property

   9ef17ae

   pythongh-101860: Expose __name__ on property

   e5ce6b7

   pythongh-101860: Expose __name__ on property

   05db108

   pythongh-101860: Expose __name__ on property

   9c956c7
7. eltoder

   added a commit that references this issue on Feb 17, 2024

   pythongh-101860: Expose __name__ on property

   8ec1251
8. serhiy-storchaka

   added a commit that references this issue on Feb 20, 2024

   gh-101860: Expose __name__ on property (GH-101876)

   c0b0c2f
9. serhiy-storchaka

   closed this as completedon Feb 20, 2024
10. woodruffw

    added a commit that references this issue on Mar 4, 2024

    pythongh-101860: Expose __name__ on property (pythonGH-101876)

    f7dedb5
11. diegorusso

    added a commit that references this issue on Apr 17, 2024

    pythongh-101860: Expose __name__ on property (pythonGH-101876)

    794df41
12. JelleZijlstra commented on May 24, 2024

    

    JelleZijlstra

    on May 24, 2024

    Member

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    This is a change to a builtin and likely has an impact on some introspection tools, so it should be mentioned in the What's New for 3.13.

    Reacted by Serhiy Storchaka, sLeae and Miro Hrončok

    Reacted by sLeae

    Reacted by sLeae
13. JelleZijlstra

    reopened this on May 24, 2024
14. JelleZijlstra

    added

    deferred-blocker

    docsDocumentation in the Doc dirDocumentation in the Doc dir

    3.13only security fixesonly security fixes

    on May 24, 2024
15. ezio-melotti

    added this to Release and Deferred blockers 🚫on May 24, 2024
16. github-project-automation

    moved this to Todo in Release and Deferred blockers 🚫on May 24, 2024
17. encukou

    added a commit that references this issue on Aug 28, 2024

    gh-101860: document `property.__name__` (GH-123399)

    40fff90
18. miss-islington

    added a commit that references this issue on Aug 28, 2024

    pythongh-101860: document `property.__name__` (pythonGH-123399)

    55ad0e5
19. JelleZijlstra

    added a commit that references this issue on Aug 29, 2024

    [3.13] gh-101860: document `property.__name__` (GH-123399) (#123428)

    eec25e5
20. picnixz commented on Aug 30, 2024

    

    picnixz

    on Aug 30, 2024

    Member

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    Closing since the feature is now documented in 3.13 and 3.14.
21. picnixz

    closed this as completedon Aug 30, 2024
22. github-project-automation

    moved this from Todo to Done in Release and Deferred blockers 🚫on Aug 30, 2024
23. picnixz

    removed

    deferred-blocker

    on Aug 30, 2024
24. LukasWoodtli

    added a commit that references this issue on Jan 22, 2025

    pythongh-101860: Expose __name__ on property (pythonGH-101876)

    b7abd7a
25. luhn

    added a commit that references this issue on Jun 30, 2025

    Fix util tests in Python 3.12+

    4d139f9

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