python / python/cpython

unrelated `from None` exceptions hide prior exception information

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3.9 (EOL) interpreter-core type-bug
Dominant language
Python
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Description

BPO 39725
Nosy @rhettinger, @terryjreedy, @ncoghlan, @benjaminp, @ethanfurman, @serhiy-storchaka
PRs
  • python/cpython#18629
  • 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 2020-02-22.21:05:03.904>
    labels = ['type-bug', '3.9']
    title = 'unrelated  `from None` exceptions hide prior exception information'
    updated_at = <Date 2020-03-30.23:45:47.178>
    user = 'https://github.com/ethanfurman'
    

    bugs.python.org fields:

    activity = <Date 2020-03-30.23:45:47.178>
    actor = 'Ido Michael'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = []
    creation = <Date 2020-02-22.21:05:03.904>
    creator = 'ethan.furman'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 39725
    keywords = ['patch']
    message_count = 10.0
    messages = ['362478', '362481', '362492', '362531', '362532', '362543', '362943', '362965', '364241', '364272']
    nosy_count = 6.0
    nosy_names = ['rhettinger', 'terry.reedy', 'ncoghlan', 'benjamin.peterson', 'ethan.furman', 'serhiy.storchaka']
    pr_nums = ['18629']
    priority = 'normal'
    resolution = None
    stage = 'patch review'
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue39725'
    versions = ['Python 3.9']
    

    Contributor guide

    Open the contributing guide

    First steps

    1. Read the whole issue, then the project's contributing guide.
    2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
    3. Fork the repository and make your change on a branch.
    4. Open a pull request that references the issue number.

    Research direction

    Start with the migrated BPO issue and the referenced python/cpython#18629 pull request, then review the issue's exception-chaining discussion. Done means the behavior described in the title no longer hides prior exception information, with the expected behavior verified against the existing discussion or patch.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    backend
    Issue type
    Bug
    Difficulty
    4/5
    Estimated time
    3-5 days
    Activity status
    Stale
    Clarity
    Needs clarification
    Newbie friendliness
    20/100

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