Steve, and others, thanks for the help. This and Michael Spencer's reply
at http://article.gmane.org/gmane.comp.python.general/390478 have been very
helpful in getting the descriptor definition clear. For me, it has taken reading http://users.rcn.com/python/download/Descriptor.htm about 4 times along with your help to get this straight.
If it only takes 2 or 3 re-reads to get descriptors, does that mean Python's black magic is really only a kind of off-white colour?
Cheers, Nick.
-- Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia --------------------------------------------------------------- http://boredomandlaziness.skystorm.net -- http://mail.python.org/mailman/listinfo/python-list