That is, without doing focus_set on some other widget?
The original post ended with the sentence above, but it did not meet quality standards. These standards demand that the problem is described completely, including what one has tried. They insist on proper grammar too.
Well, it is not really a problem, just a question. I tried to find a widget method, say, focus_unset, that would do the trick. I didn't. My grammar is proper. Maybe the robotic police is confused with terms like focus_set?
No. Some widget must have focus. You can set focus to the root window if you don't have any other widgets that naturally accept keyboard input.
Is there a way to make s tkinter widget lose focus?