TextIOWrapper Buffering Inconsistent Between _io and _pyio

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
28/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
backend

Research direction

Start by comparing the buffering behavior covered by testpyio.py and testio.py, then read the issue's discussion and the TextIOWrapper documentation. Determine the intended behavior for _io versus _pyio, update the relevant implementation or documentation, and confirm that both test files consistently describe and verify the result.

Written by the indexing model from the issue text.

Description

3.10 3.8 (EOL) 3.9 (EOL) docs topic-IO type-bug
BPO 7955
Nosy @birkenfeld, @amauryfa, @pitrou
Files
  • testpyio.py
  • testio.py
  • 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 2010-02-18.06:41:15.794>
    labels = ['type-bug', '3.8', '3.9', 'expert-IO', '3.10', 'docs']
    title = 'TextIOWrapper Buffering Inconsistent Between _io and _pyio'
    updated_at = <Date 2020-11-16.21:51:41.938>
    user = 'https://bugs.python.org/amcnabb'
    

    bugs.python.org fields:

    activity = <Date 2020-11-16.21:51:41.938>
    actor = 'iritkatriel'
    assignee = 'docs@python'
    closed = False
    closed_date = None
    closer = None
    components = ['Documentation', 'IO']
    creation = <Date 2010-02-18.06:41:15.794>
    creator = 'amcnabb'
    dependencies = []
    files = ['16248', '16249']
    hgrepos = []
    issue_num = 7955
    keywords = []
    message_count = 5.0
    messages = ['99496', '99497', '99519', '99520', '99521']
    nosy_count = 4.0
    nosy_names = ['georg.brandl', 'amaury.forgeotdarc', 'pitrou', 'amcnabb']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue7955'
    versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']
    

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