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GeezerVison is showing github.com — test_ttk: NotebookTest.test_traversal() fails randomly on Windows · Issue #161634 · python/cpython

test_ttk: NotebookTest.test_traversal() fails randomly on Windows #161634

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test_ttk: NotebookTest.test_traversal() fails randomly on Windows#161634
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testsTests in the Lib/test dirTests in the Lib/test dirtopic-tkinter

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@vstinner
vstinner
opened on Nov 8, 2026
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Windows / Build and test (x64, tail-call): https://github.com/python/cpython/actions/runs/42506853637/job/128811450926?pr=161626

Example:

0:06:31 load avg: 3.87 mem:   64.3 MiB [1/2/1] test_ttk failed (1 failure)
Re-running test_ttk in verbose mode (matching: test_traversal)
test_traversal (test.test_ttk.test_widgets.NotebookTest.test_traversal) ... FAIL

======================================================================
FAIL: test_traversal (test.test_ttk.test_widgets.NotebookTest.test_traversal)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\a\cpython\cpython\Lib\test\test_ttk\test_widgets.py", line 1297, in test_traversal
    self.assertEqual(self.nb.select(), str(self.child2))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '.+label' != '.+label2'
- .+label
+ .+label2
?        +


Error: AssertionError: '.+label' != '.+label2'
- .+label
+ .+label2
?        +
----------------------------------------------------------------------
Ran 1 test in 0.174s

FAILED (failures=1)
test test_ttk failed

Activity

  1. vstinner
    added
    testsTests in the Lib/test dirTests in the Lib/test dir
    topic-tkinter
    on Nov 8, 2026
  2. vstinner commented on Nov 8, 2026

    @vstinner
    vstinner
    on Nov 8, 2026
    MemberAuthor
    More actions

    cc @serhiy-storchaka @terryjreedy

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