Danny: Thanks for this, I think that I can use this idea.
When I first read your response I did not see how it helped me, but now I realise that it allows me to add some context to the exception message. I don't suppose that I can change the traceback to point at the definition of f2 instead of shout() but I can give a better hint to the user at why this went wrong. Don. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
