I believe any Tkinter app will exhibit the same behavior, but I discovered this with idle and verified with wish.py:


$ ./python.exe Demo/tkinter/guido/wish.py 
% quit
Traceback (most recent call last):
  File "Demo/tkinter/guido/wish.py", line 22, in <module>
    if tk.getboolean(tk.call('info', 'complete', cmd)):
_tkinter.TclError: expected boolean value but got ""


Note that the Traceback above is probably due to another bug.

If you start wish.py from a terminal covering the top left corner of the screen, the wish window will appear under the terminal window.