René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Fix and harden IDLE GUI tests for newer Tk and display scaling","articleBody":"Several IDLE GUI tests fail on newer Tk or are fragile under display scaling. All test-only.\n\n`test_sidebar` `test_mousewheel` fails on Tk 8.7+, which replaced the X11 `\u003cButton-4>`/`\u003cButton-5>` wheel events with `\u003cMouseWheel>`.\n\n`test_configdialog` compares ttk widget states with exact tuples, which break when a widget picks up transient `active`/`hover` states from the pointer (whose position shifts with the scaling). The tested methods only toggle `disabled`, so the tests should assert that flag alone.\n\nSeveral `test_configdialog` tests re-mask a method at the end, which is skipped on a mid-test failure; `addCleanup()` makes it unconditional.\n\n\n\u003c!-- gh-linked-prs -->\n### Linked PRs\n* gh-153742\n* gh-154404\n* gh-154405\n* gh-154406\n\u003c!-- /gh-linked-prs -->\n","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2026-07-15T05:14:16Z","url":"https://github.com/python/cpython/issues/153741"}