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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Fix tkinter.ttk with Tcl/Tk 9.0","articleBody":"There are two issues in `tkinter.ttk` with Tcl/Tk 9.0.\r\n\r\n* Using the Variable methods trace_variable() and trace_vdelete(). They wrap deprecated Tcl commands which were removed in Tcl 9.0. New methods added in #66313 should be used instead (added in Python 3.6 and supported in Tcl 8.4 or older).\r\n* Combobox.current() fails because the underlying Tk command returns now an empty string instead of -1 for empty combobox. It would be right to translate it to `None`, but -1 is more backward compatible. In future we can change this method to return `None`.\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-120213\n* gh-120215\n* gh-120216\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2024-06-07T10:20:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/120211/cpython/issues/120211"}