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Tkinter tests fail with Tk 8.7, 9.0 and 9.1 #145736

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Tkinter tests fail with Tk 8.7, 9.0 and 9.1#145736
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3.14bugs and security fixes3.15bugs and security fixestestsTests in the Lib/test dirtopic-tkintertype-bugAn unexpected behavior, bug, or error

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@serhiy-storchaka
serhiy-storchaka
opened on Mar 10, 2026

I build Python with the latest versions of Tk 8.7, 9.0 and 9.1. Multiple Tkinter tests fail (mostly the configure tests). Last time the tests were updated for pre-release version of Tk 8.7, this can be reason. Also, some fine details can be changed in bugfix releases.

Looking at the code, the past attempts to fix tests for 8.7 and 9.0 make some cases to be just omitted for new Tk versions, or replaced by tests for already covered cases. I tried to fix this too, and simplify the tests code.

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  1. serhiy-storchaka
    added
    testsTests in the Lib/test dir
    topic-tkinter
    3.14bugs and security fixes
    3.15bugs and security fixes
    on Mar 10, 2026
  2. serhiy-storchaka
    added a commit that references this issue on Mar 10, 2026

    pythongh-145736: Fix Tkinter tests for Tk 8.7, 9.0 and 9.1

    77f1905

  3. ned-deily commented on Mar 10, 2026

    @ned-deily
    ned-deily
    on Mar 10, 2026
    Member

    For the record, Tcl/Tk 8.7 was never officially released, with development abandoned after 8.7a5 (June 18, 2021). So we shouldn't worry about whether tests fail for it.

  4. serhiy-storchaka commented on Mar 10, 2026

    @serhiy-storchaka
    serhiy-storchaka
    on Mar 10, 2026
    MemberAuthor

    Ah, that's why the tests mostly used 9.0 as the threshold. Anyway, after making the tests passing on all four versions, keeping support for 8.7 is not a large burden.

  5. StanFromIreland
    added
    type-bugAn unexpected behavior, bug, or error
    on Mar 10, 2026
  6. serhiy-storchaka
    added 3 commits that reference this issue on Mar 11, 2026

    gh-145736: Fix Tkinter tests for Tk 8.7, 9.0 and 9.1 (GH-145738)

    77d6d5d

    [3.14] pythongh-145736: Fix Tkinter tests for Tk 8.7, 9.0 and 9.1 (py…

    e003800

    [3.14] gh-145736: Fix Tkinter tests for Tk 8.7, 9.0 and 9.1 (GH-145738)…

    a778fd6
  7. serhiy-storchaka
    closed this as completedon Mar 12, 2026
  8. ljfp
    added a commit that references this issue on Apr 25, 2026

    pythongh-145736: Fix Tkinter tests for Tk 8.7, 9.0 and 9.1 (pythonGH-…

    3d5cd22
  9. ned-deily
    added 2 commits that reference this issue on May 5, 2026

    pythongh-145736: Fix test_tkinter test_configure_values test case bac…

    0acbeae

    [3.14] gh-145736: Fix test_tkinter test_configure_values test case ba…

    ff0aa91
  10. serhiy-storchaka
    added a commit that references this issue on Jul 11, 2026

    [3.13] gh-128846: Make tkinter tests robust against Tcl/Tk 9.0 (GH-15…

    59e183c
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