python / python/cpython

fileinput.input(path, inplace=True) crashes for valid filename with 252-255 characters

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stdlib type-feature
Dominant language
Python
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Description

BPO 45965
Nosy @jamilraichouni
Files
  • long_filename_passed_to_fileinput.ipynb: Example Jupyter notebook showcasing that fileinput cannot handle a valid file
  • 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 2021-12-02.15:46:58.990>
    labels = ['type-feature', 'library', '3.10']
    title = 'fileinput.input(path, inplace=True) crashes for valid filename with 252-255 characters'
    updated_at = <Date 2021-12-02.15:46:58.990>
    user = 'https://github.com/jamilraichouni'
    

    bugs.python.org fields:

    activity = <Date 2021-12-02.15:46:58.990>
    actor = 'jamil.raichouni'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2021-12-02.15:46:58.990>
    creator = 'jamil.raichouni'
    dependencies = []
    files = ['50471']
    hgrepos = []
    issue_num = 45965
    keywords = []
    message_count = 1.0
    messages = ['407534']
    nosy_count = 1.0
    nosy_names = ['jamil.raichouni']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'enhancement'
    url = 'https://bugs.python.org/issue45965'
    versions = ['Python 3.10']
    

    Contributor guide

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    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

    Open long_filename_passed_to_fileinput.ipynb and reproduce the failure through fileinput.input(path, inplace=True) with valid 252–255-character filenames. Trace the fileinput.input entry point to identify the failing behavior; done means those filenames no longer crash, with the behavior verified against the notebook example.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    cli
    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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