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Make @final introspectable at runtime #90500
Description
| BPO | 46342 |
|---|---|
| Nosy | @gvanrossum, @JelleZijlstra, @Fidget-Spinner, @AlexWaygood |
| PRs |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = 'https://github.com/JelleZijlstra'
closed_at = <Date 2022-01-12.22:05:14.069>
created_at = <Date 2022-01-11.12:10:25.536>
labels = ['type-feature', 'library', '3.11']
title = 'Make @final introspectable at runtime'
updated_at = <Date 2022-01-12.22:05:14.069>
user = 'https://github.com/JelleZijlstra'bugs.python.org fields:
activity = <Date 2022-01-12.22:05:14.069>
actor = 'AlexWaygood'
assignee = 'JelleZijlstra'
closed = True
closed_date = <Date 2022-01-12.22:05:14.069>
closer = 'AlexWaygood'
components = ['Library (Lib)']
creation = <Date 2022-01-11.12:10:25.536>
creator = 'JelleZijlstra'
dependencies = []
files = []
hgrepos = []
issue_num = 46342
keywords = ['patch']
message_count = 2.0
messages = ['410298', '410424']
nosy_count = 4.0
nosy_names = ['gvanrossum', 'JelleZijlstra', 'kj', 'AlexWaygood']
pr_nums = ['30530']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue46342'
versions = ['Python 3.11']
Activity
JelleZijlstra commented on Jan 11, 2022
Currently, @typing.final is implemented as an identity function, which makes it impossible for type checkers that look at runtime objects to support it.
I propose that we implement it as something like:
I will submit a PR implementing this idea.
gvanrossum commented on Jan 12, 2022
New changeset 0bbf30e by Jelle Zijlstra in branch 'main':
bpo-46342: make @typing.final introspectable (GH-30530)
0bbf30e