> > if pickle_file is not None: > > Can this be abbreviated to > > if pickle_file: > > ? Yep. I think I gained "is not None" through osmosis...I see it in a lot of programs, that argue its use for readability/comprehensibility. It's certainly not necessary though. Andy > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor >