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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"New test_ttk failure on Mac: \"bad screen distance\"","articleBody":"# Bug report\n\n### Bug description:\n\nI've been running with some patches from @ronaldoussoren to the following:\n\n```\n\tmodified:   Lib/test/support/__init__.py\n\tmodified:   Lib/test/test_ttk/test_style.py\n\tmodified:   Lib/test/test_ttk/test_widgets.py\n```\n\n(See attached diff.)\n[test_ttk.txt](https://github.com/user-attachments/files/17104079/test_ttk.txt)\n\nEverything was working fine, but today I began to get a repeatable failure in `test_ttk`:\n\n```\n======================================================================\nFAIL: test_configure_height (test.test_ttk.test_widgets.NotebookTest.test_configure_height)\n----------------------------------------------------------------------\n_tkinter.TclError: bad screen distance \"\"\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"/Users/skip/src/python/cpython/Lib/test/test_tkinter/widget_tests.py\", line 539, in test_configure_height\n    self.checkIntegerParam(widget, 'height', 100, -100, 0)\n    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/Users/skip/src/python/cpython/Lib/test/test_tkinter/widget_tests.py\", line 81, in checkIntegerParam\n    self.checkInvalidParam(widget, name, '', errmsg=errmsg)\n    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/Users/skip/src/python/cpython/Lib/test/test_tkinter/widget_tests.py\", line 67, in checkInvalidParam\n    with self.assertRaisesRegex(tkinter.TclError, errmsg or ''):\n         ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nAssertionError: \"\\Aexpected integer but got \"\"\\Z\" does not match \"bad screen distance \"\"\"\n\n======================================================================\nFAIL: test_configure_width (test.test_ttk.test_widgets.NotebookTest.test_configure_width)\n----------------------------------------------------------------------\n_tkinter.TclError: bad screen distance \"\"\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"/Users/skip/src/python/cpython/Lib/test/test_tkinter/widget_tests.py\", line 543, in test_configure_width\n    self.checkIntegerParam(widget, 'width', 402, -402, 0)\n    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/Users/skip/src/python/cpython/Lib/test/test_tkinter/widget_tests.py\", line 81, in checkIntegerParam\n    self.checkInvalidParam(widget, name, '', errmsg=errmsg)\n    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/Users/skip/src/python/cpython/Lib/test/test_tkinter/widget_tests.py\", line 67, in checkInvalidParam\n    with self.assertRaisesRegex(tkinter.TclError, errmsg or ''):\n         ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nAssertionError: \"\\Aexpected integer but got \"\"\\Z\" does not match \"bad screen distance \"\"\"\n\n----------------------------------------------------------------------\nRan 342 tests in 6.364s\n```\n\nI'm putting this out there with no further investigation. I doubt it will be a release blocker for 3.13, but if so, maybe the sprinters can find and fix the problem quickly.\n\n### CPython versions tested on:\n\n3.12, 3.13, CPython main branch\n\n### Operating systems tested on:\n\nmacOS\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-124542\n* gh-124544\n* gh-124545\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/smontanaro","@type":"Person","name":"smontanaro"},"datePublished":"2024-09-23T20:53:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":16},"url":"https://github.com/124378/cpython/issues/124378"}