python / python/cpython

C implementation of parts of copy.deepcopy

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3.12 extension-modules performance
Dominant language
Python
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Description

BPO 28607
Nosy @villemoes, @pablogsal
Files
  • deepcopy.patch
  • deepcopy.patch: patch v2
  • 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 2016-11-03.23:11:36.119>
    labels = ['extension-modules', '3.7', 'performance']
    title = 'C implementation of parts of copy.deepcopy'
    updated_at = <Date 2019-01-20.21:43:41.055>
    user = 'https://github.com/villemoes'
    

    bugs.python.org fields:

    activity = <Date 2019-01-20.21:43:41.055>
    actor = 'pablogsal'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Extension Modules']
    creation = <Date 2016-11-03.23:11:36.119>
    creator = 'villemoes'
    dependencies = []
    files = ['45344', '45400']
    hgrepos = []
    issue_num = 28607
    keywords = ['patch']
    message_count = 3.0
    messages = ['280032', '280360', '334105']
    nosy_count = 2.0
    nosy_names = ['villemoes', 'pablogsal']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = 'test needed'
    status = 'open'
    superseder = None
    type = 'performance'
    url = 'https://bugs.python.org/issue28607'
    versions = ['Python 3.7']
    

    • PR: gh-91610

    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 linked deepcopy.patch files and PR gh-91610, then inspect the existing copy.deepcopy implementation and the issue's test-needed status. Done means the proposed C implementation is integrated without regressions and its behavior is covered by the relevant tests.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    c, python
    Domain
    backend, performance
    Issue type
    Feature
    Difficulty
    5/5
    Estimated time
    Over a week
    Activity status
    Stale
    Clarity
    Mostly clear
    Newbie friendliness
    20/100

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