Changing cls.bases must ensure proper metaclass inheritance

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#66,118 opened on Jul 4, 2014 6 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 5/5
Estimated time: Over a week
Newbie friendliness: 20/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: python
Domain: compilers

Research direction

No source files, tests, or entry points are identified; begin by reviewing the linked BPO issue and the interpreter-core implementation related to changing bases. Establish the failing metaclass-inheritance behavior and add coverage for the corrected behavior, with the work complete when that regression passes.

Written by the indexing model from the issue text.

Description

3.8 (EOL) interpreter-core type-bug

BPO	21919
Nosy	@gvanrossum, @rhettinger, @tirkarthi

^{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/gvanrossum'
closed_at = None
created_at = <Date 2014-07-04.20:45:25.320>
labels = ['interpreter-core', 'type-bug', '3.8']
title = 'Changing cls.__bases__ must ensure proper metaclass inheritance'
updated_at = <Date 2018-09-28.18:34:40.580>
user = 'https://bugs.python.org/abusalimov'

bugs.python.org fields:

activity = <Date 2018-09-28.18:34:40.580>
actor = 'gvanrossum'
assignee = 'gvanrossum'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2014-07-04.20:45:25.320>
creator = 'abusalimov'
dependencies = []
files = []
hgrepos = []
issue_num = 21919
keywords = []
message_count = 6.0
messages = ['222312', '236753', '237072', '326532', '326650', '326651']
nosy_count = 4.0
nosy_names = ['gvanrossum', 'rhettinger', 'abusalimov', 'xtreak']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue21919'
versions = ['Python 3.8']

Dominant language: Python
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Forks: 36k
Avg merge: 1d 9h
Merged PRs (30d): 558

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Changing cls.__bases__ must ensure proper metaclass inheritance