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python - In Tkinter how do i remove focus from a widget?

I'd like to remove focus from a widget manually.

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You can focus to another dummy widget.

Edit

from Tkinter import *

def callback():
    print master.focus()

master = Tk()
e = Entry(master)
e.pack()
e.focus()
b = Button(master, text="get", width=10, command=callback)
b.pack()

master.mainloop()

Focusing on a non-'focusable' widget will remove focus from another widget.


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