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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"tkinter window doesn't open until mainloop() is invoked","articleBody":"I'm seeing a difference in behaviour between the python REPL and bpython.\r\n\r\nWhen running this as two lines in the REPL:\r\n```\r\nimport tkinter as tk\r\nwindow = tk.Tk()\r\n```\r\n\r\nOn python 3.12 (and I believe earlier) as soon as the window is created, it appears.\r\n\r\nOn bpython running the code makes a separate python app appear (i.e Python appears at the top left of the screen), but there's no window.  If I look in 'force quit' then Python says it's not responding.\r\n\r\nHowever, I can get the window to appear by calling `window.mainloop()`.  In addition when this is called, Python no longer appears as 'not responding' in the Force Quit window.","author":{"url":"https://github.com/djaychela","@type":"Person","name":"djaychela"},"datePublished":"2024-02-29T08:01:31.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/1012/bpython/issues/1012"}