[issue28498] tk busy command

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Could you provide a patch against the default branch? See https://docs.python.org/devguide/ for help. The patch should include not just changes to the tkinter module, but tests for new methods (add new class in Lib/tkinter/test/test_tkinter/test_widgets.py). Unfortunately there is no appropriate place for documenting this feature in the module documentation, but new methods should have docstrings. Would be nice to add an entry in Doc/whatsnew/3.7.rst.

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