Inertial scrolling in Mac OS X with Tkinter and Python

Question

I am working on a Python 3.3 project that uses Tkinter as a Window manager. I have mouse scroll wheel events set up for a canvas. The scrolling works in Windows 7, 8, and Ubuntu, but upon scrolling with a Magic Mouse in Mac OS X Mountain Lion, the program crashes with teh following error in the Tk main loop:

File "/Users/xxxx/Documents/Repositories/tycoon/agentsim.py", line 291, in start
    self._root.mainloop()
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/tkinter/__init__.py", line 1038, in mainloop
self.tk.mainloop(n)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xe7 in position 0: invalid continuation byte

My code was:

self._hscroll.configure( command=self._canvas.xview )
self._vscroll.configure( command=self._canvas.yview )
self._canvas.bind('<MouseWheel>', lambda event: self.rollWheel(event))

where hscroll and vscroll are scrollbar objects in the form.

If I use a regular mouse, the problem doesn't occur. It also occurs when I try scroll with my trackpad (with inertial scrolling turned on)

Do I have to update Tk to make this functionality work, or is it just broken in general?

Answer 1

These errors can be caught:

while True:
    try:
        root.mainloop()
        break
    except UnicodeDecodeError:
        pass

This seems to work perfectly, even scrolling inertially, and does not require any installation/upgrading.