python / python/cpython

functools.singledispatchmethod interacts poorly with subclasses

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3.8 (EOL) stdlib type-bug
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Python
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描述

BPO 36457
Nosy @methane, @ambv, @tim-mitchell
Files
  • methoddispatch36.py: alternate implementation from methoddispatch package
  • singledispatchmethod.py: improved implementation
  • singledispatchmethod.py
  • test_sdm.py: implementation tests
  • 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 2019-03-28.03:42:39.296>
    labels = ['3.8', 'type-bug', 'library']
    title = 'functools.singledispatchmethod interacts poorly with subclasses'
    updated_at = <Date 2022-03-18.06:10:24.323>
    user = 'https://github.com/tim-mitchell'
    

    bugs.python.org fields:

    activity = <Date 2022-03-18.06:10:24.323>
    actor = 'Tim Mitchell2'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2019-03-28.03:42:39.296>
    creator = 'Tim Mitchell2'
    dependencies = []
    files = ['48235', '48261', '50688', '50689']
    hgrepos = []
    issue_num = 36457
    keywords = []
    message_count = 5.0
    messages = ['339008', '340005', '370758', '371014', '415470']
    nosy_count = 5.0
    nosy_names = ['methane', 'lukasz.langa', 'Tim Mitchell2', 'dschaumont', 'bojan.jovanovic.gtech']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue36457'
    versions = ['Python 3.8']
    

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    4. 送出 Pull Request,並在描述裡引用這個 Issue 編號。

    研究方向

    先閱讀 singledispatchmethod.py 和隨附的 test_sdm.py 實作測試,然後將它們與回報的子類別互動進行比較。當預期的子類別行為已在回歸測試中確立,且實作通過這些測試時,即表示完成。

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    評估

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    python
    領域
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    Issue 類型
    缺陷
    難度
    4/5
    預估耗時
    3-5 天
    活躍度
    停滯
    描述清晰度
    需要釐清
    新手友好度
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