Well, I coded a menu bar into my Python program and I wanted to make a tab in the menu-item-description.
My code:
myMenu = Menu(root)
root.config(menu=myMenu)
menu1 = Menu(myMenu)
myMenu.add_cascade(label='Optionen', menu=menu1)
menu1.add_command(label='Informationen' '\t' 'F5', command = info)
menu1.add_command(label='Beenden' '\t' '\t' 'esc', command = ende)
It works perfectly on UNIX (Ubuntu & Mac OS X) but Windows doesn’t work!

Hope someone can help! 🙂
I think you are out of luck. Menus in Tkinter are native, so you’re at the mercy of Microsoft.
If you’re trying to provide a string that represents an accelerator, use the
acceleratorattribute instead of faking it with a tab in the label.