python / python/cpython

Cannot capture sys.stderr output from an uncaught exception in a multiprocessing Process using a multiprocessing Queue

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stdlib topic-multiprocessing type-bug
主要语言
Python
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描述

BPO 27081
Nosy @pppery, @applio, @Vgr255
Files
  • issue27081.py: Cleaned and embellished example with commentary.
  • 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 2016-05-21.21:04:33.243>
    labels = ['type-bug', 'library']
    title = 'Cannot capture sys.stderr output from an uncaught exception in a multiprocessing Process using a multiprocessing Queue'
    updated_at = <Date 2016-07-03.04:25:20.887>
    user = 'https://github.com/pppery'
    

    bugs.python.org fields:

    activity = <Date 2016-07-03.04:25:20.887>
    actor = 'davin'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2016-05-21.21:04:33.243>
    creator = 'ppperry'
    dependencies = []
    files = ['43613']
    hgrepos = []
    issue_num = 27081
    keywords = []
    message_count = 7.0
    messages = ['266026', '266028', '269733', '269736', '269737', '269738', '269750']
    nosy_count = 5.0
    nosy_names = ['jnoller', 'sbt', 'ppperry', 'davin', 'abarry']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue27081'
    versions = ['Python 3.4']
    

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    4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

    调研方向

    从附加的 issue27081.py 示例开始,重现涉及 sys.stderr、未捕获异常、multiprocessing.Process 和 multiprocessing.Queue 的失败。跟踪相关的 multiprocessing 行为,并确定应如何对其进行测试;当能够按预期捕获子进程的 stderr,且不会使现有行为发生回归时,该 issue 即完成。

    由索引模型根据 Issue 内容生成。

    评估

    技术栈
    python
    领域
    operating-systems
    Issue 类型
    缺陷
    难度
    4/5
    预计耗时
    3-5 天
    活跃度
    停滞
    描述清晰度
    基本清楚
    新手友好度
    35/100

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