python / python/cpython

os.symlink: FileExistsError shows wrong message

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extension-modules type-bug
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Python
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Description

BPO 29657
Nosy @larryhastings, @serhiy-storchaka, @eryksun, @sayanchowdhury, @zhangyangyu, @andrewnester, @Miserlou, @Jongy, @kamilturek
Files
  • x.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 2017-02-26.08:52:24.286>
    labels = ['interpreter-core', 'type-bug', '3.8', '3.9', '3.10', 'extension-modules']
    title = 'os.symlink: FileExistsError shows wrong message'
    updated_at = <Date 2021-05-01.14:08:17.914>
    user = 'https://bugs.python.org/wrohdewald'
    

    bugs.python.org fields:

    activity = <Date 2021-05-01.14:08:17.914>
    actor = 'Yonatan Goldschmidt'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Extension Modules', 'Interpreter Core']
    creation = <Date 2017-02-26.08:52:24.286>
    creator = 'wrohdewald'
    dependencies = []
    files = ['46671']
    hgrepos = []
    issue_num = 29657
    keywords = []
    message_count = 12.0
    messages = ['288591', '288592', '288906', '288936', '288947', '288963', '288971', '289064', '296270', '296273', '330827', '392598']
    nosy_count = 10.0
    nosy_names = ['larry', 'wrohdewald', 'serhiy.storchaka', 'eryksun', 'sayanchowdhury', 'xiang.zhang', 'andrewnester', 'miserlou', 'Yonatan Goldschmidt', 'kamilturek']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue29657'
    versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']
    

    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 running the attached x.py and inspect the FileExistsError message produced by os.symlink when the destination already exists. Trace the relevant os.symlink implementation and existing exception tests, then confirm that the reported message accurately describes the failure and that the regression is covered by a test.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    operating-systems
    Issue type
    Bug
    Difficulty
    3/5
    Estimated time
    1-2 days
    Activity status
    Stale
    Clarity
    Mostly clear
    Newbie friendliness
    38/100

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