problem with ABCMeta.prepare when called after types.new_class

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#77,371 opened on Mar 30, 2018 7 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 20/100

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

Research direction

Start with abcmeta_prepare.py, the uploaded demonstration of the reported behavior, then review the referenced PR 6317 and the ABCMeta/types.new_class entry points. Done means the expected behavior is clarified and the correction is covered by the relevant CPython tests.

Written by the indexing model from the issue text.

Description

3.7 (EOL) 3.8 (EOL) stdlib type-bug

BPO	33190
Nosy	@ilevkivskyi, @Ricyteach
PRs	python/cpython#6317
Files	abcmeta_prepare.py: demo of issue

^{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 2018-03-30.20:43:02.783>
labels = ['3.7', '3.8', 'type-bug', 'library']
title = 'problem with ABCMeta.__prepare__ when called after types.new_class'
updated_at = <Date 2018-03-31.02:58:22.949>
user = 'https://github.com/Ricyteach'

bugs.python.org fields:

activity = <Date 2018-03-31.02:58:22.949>
actor = 'Ricyteach'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-03-30.20:43:02.783>
creator = 'Ricyteach'
dependencies = []
files = ['47509']
hgrepos = []
issue_num = 33190
keywords = ['patch']
message_count = 5.0
messages = ['314714', '314716', '314717', '314718', '314731']
nosy_count = 2.0
nosy_names = ['levkivskyi', 'Ricyteach']
pr_nums = ['6317']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue33190'
versions = ['Python 3.7', 'Python 3.8']

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

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problem with ABCMeta.__prepare__ when called after types.new_class