> I tried this particular excersise and had a problem... > > ------------------------------------------------------ > Python 2.1.1 (#20, Jul 20 2001, 01:19:29) [MSC 32 bit > .... > SyntaxError: local name 'n' in 'addn' shadows use of 'n' as > ... > Am I missing something? Yes, Python 2.2 In 2.1 you need to do from __future__ import nested_scopes or something similarly arcane. Alan G