python / python/cpython

setting a locale that uses comma as decimal separator breaks tkinter.DoubleVar

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stdlib topic-tkinter type-bug
Dominant language
Python
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Merged PRs (30d)
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Description

BPO 39827
Nosy @serhiy-storchaka, @thawn, @E-Paine, @akulakov
Files
  • test_doublevar.py: minimal code example
  • 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 2020-03-02.15:11:30.139>
    labels = ['3.7', 'type-bug', 'expert-tkinter']
    title = 'setting a locale that uses comma as decimal separator breaks tkinter.DoubleVar'
    updated_at = <Date 2021-08-21.08:08:14.008>
    user = 'https://github.com/thawn'
    

    bugs.python.org fields:

    activity = <Date 2021-08-21.08:08:14.008>
    actor = 'serhiy.storchaka'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Tkinter']
    creation = <Date 2020-03-02.15:11:30.139>
    creator = 'thawn'
    dependencies = []
    files = ['48943']
    hgrepos = []
    issue_num = 39827
    keywords = []
    message_count = 5.0
    messages = ['363184', '363371', '371394', '400005', '400023']
    nosy_count = 4.0
    nosy_names = ['serhiy.storchaka', 'thawn', 'epaine', 'andrei.avk']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue39827'
    versions = ['Python 3.7']
    

    Linked PRs
    • gh-152008
    • gh-152049
    • gh-152050
    • gh-152051

    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 with the attached test_doublevar.py minimal example and reproduce the failure under a locale using a comma decimal separator. Read the Tkinter DoubleVar behavior around that example, then compare the linked PRs gh-152008, gh-152049, gh-152050, and gh-152051. Done means the regression is covered by a test and DoubleVar handles the locale correctly.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    desktop, localization
    Issue type
    Bug
    Difficulty
    4/5
    Estimated time
    3-5 days
    Activity status
    Stale
    Clarity
    Mostly clear
    Newbie friendliness
    20/100

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