exception handling in Tkinter

In wxPython I install a top-level exception handler to intercept
exceptions and display them in the GUI.

With Tkinter, I'm trying to do the same.

in __init__

sys.excepthook = self.ExceptionHandler

def ExceptionHandler(self, type, value, tb):
tblist = traceback.format_tb(tb)
for line in tblist:
text += line
self.errorDialog(text)

But it's not being called on exceptions. Any ideas?

Thanks,
Mike

.

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