python / python/cpython

Inheritance from base class with property in class makes them non-instantiatable

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3.10 stdlib type-bug
Dominant language
Python
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Description

BPO 47237
Nosy @gvanrossum, @ericvsmith, @JelleZijlstra, @Fidget-Spinner, @AlexWaygood, @Germandrummer92

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 = None
closed_at = None
created_at = <Date 2022-04-06.08:41:16.184>
labels = ['type-bug', 'library', '3.10']
title = 'Inheritance from base class with property in class makes them non-instantiatable'
updated_at = <Date 2022-04-06.15:54:34.248>
user = 'https://github.com/Germandrummer92'

bugs.python.org fields:

activity = <Date 2022-04-06.15:54:34.248>
actor = 'eric.smith'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2022-04-06.08:41:16.184>
creator = 'Germandrummer92'
dependencies = []
files = []
hgrepos = []
issue_num = 47237
keywords = []
message_count = 5.0
messages = ['416846', '416853', '416880', '416881', '416882']
nosy_count = 6.0
nosy_names = ['gvanrossum', 'eric.smith', 'JelleZijlstra', 'kj', 'AlexWaygood', 'Germandrummer92']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue47237'
versions = ['Python 3.10']

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue concerns Python 3.10 inheritance involving a base-class property, but names no source file, test, or entry point. Start by reproducing the reported non-instantiatable class behavior from the issue title, then locate the relevant CPython library or runtime code and add regression coverage showing the affected class can be instantiated.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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