python / python/cpython

Different behavior for functiools.partial between inspect.isfunction() and other inspect.is*function()

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3.10 stdlib type-bug
Dominant language
Python
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Description

BPO 46722
Nosy @IliyaZinoviev
Files
  • isfuncs_behavior.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 2022-02-11.15:26:49.488>
    labels = ['type-bug', 'library', '3.10']
    title = 'Different behavior for functiools.partial between inspect.isfunction() and other inspect.is*function()'
    updated_at = <Date 2022-02-12.13:23:19.287>
    user = 'https://github.com/IliyaZinoviev'
    

    bugs.python.org fields:

    activity = <Date 2022-02-12.13:23:19.287>
    actor = 'IliyaZinoviev'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2022-02-11.15:26:49.488>
    creator = 'IliyaZinoviev'
    dependencies = []
    files = ['50621']
    hgrepos = []
    issue_num = 46722
    keywords = []
    message_count = 4.0
    messages = ['413077', '413111', '413127', '413128']
    nosy_count = 2.0
    nosy_names = ['Kevin Shweh', 'IliyaZinoviev']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue46722'
    versions = ['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 isfuncs_behavior.py reproducer and compare its results for functools.partial with inspect.isfunction() and the other inspect.is*function() predicates. Read the relevant inspect behavior and existing tests, then establish the intended consistency and add coverage; done means the discrepancy is resolved and the regression test passes.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    tooling
    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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