python / python/cpython

Preserve AttributeError exception context in __getattr__

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

BPO 40519
Nosy @ammaraskar, @Arusekk, @pasenor
Files
  • typeobject.patch: The simpler patch
  • robust.patch: The robust 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 2020-05-05.14:32:40.592>
    labels = ['interpreter-core', 'type-bug', '3.9']
    title = 'Preserve AttributeError exception context in __getattr__'
    updated_at = <Date 2020-05-05.14:36:34.734>
    user = 'https://github.com/Arusekk'
    

    bugs.python.org fields:

    activity = <Date 2020-05-05.14:36:34.734>
    actor = 'Arusekk'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Interpreter Core']
    creation = <Date 2020-05-05.14:32:40.592>
    creator = 'Arusekk'
    dependencies = []
    files = ['49122', '49123']
    hgrepos = []
    issue_num = 40519
    keywords = ['patch']
    message_count = 2.0
    messages = ['368152', '368154']
    nosy_count = 3.0
    nosy_names = ['ammar2', 'Arusekk', 'pasenor']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue40519'
    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 by reviewing the attached typeobject.patch and robust.patch files, which contain the proposed approaches. Then locate the relevant CPython interpreter code and add or run focused tests for the AttributeError behavior; done means the exception context is preserved without breaking existing attribute lookup behavior.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    compilers
    Issue type
    Bug
    Difficulty
    4/5
    Estimated time
    3-5 days
    Activity status
    Stale
    Clarity
    Needs clarification
    Newbie friendliness
    25/100

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