Welcome - this seems to be your first encounter with Python Tutor.
It is essential when asking questions like this that you state explicitly what problem you are having.
If the program runs and gives unexpected results, tell us that, and show some input, the expected results and the actual results.
If the program raises an exception, post the entire traceback. If something else, explain that. -- Bob Gailer Chapel Hill NC 919-636-4239 _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
