multiple inheritance + C extension = possibly unexpected __base__

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
backend

Research direction

Start by reading BPO issue 20518 and the uploaded patch 33997, then investigate the reported multiple-inheritance behavior in CPython's extension modules. The payload does not identify a test or define the expected base value, so completion requires clarifying the intended behavior before validating a fix.

Written by the indexing model from the issue text.

Description

extension-modules type-bug
BPO 20518
Nosy @ericsnowcurrently, @tecki
Files
  • patch
  • 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 2014-02-05.08:30:36.892>
    labels = ['extension-modules', 'type-bug']
    title = 'multiple inheritance + C extension = possibly unexpected __base__'
    updated_at = <Date 2014-02-08.14:41:36.856>
    user = 'https://github.com/tecki'
    

    bugs.python.org fields:

    activity = <Date 2014-02-08.14:41:36.856>
    actor = 'Martin.Teichmann'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Extension Modules']
    creation = <Date 2014-02-05.08:30:36.892>
    creator = 'Martin.Teichmann'
    dependencies = []
    files = ['33997']
    hgrepos = []
    issue_num = 20518
    keywords = []
    message_count = 3.0
    messages = ['210291', '210360', '210652']
    nosy_count = 2.0
    nosy_names = ['eric.snow', 'Martin.Teichmann']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue20518'
    versions = ['Python 2.7', 'Python 3.5']
    

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