John Roth wrote: > It's not an error. As one of the first responders said, check > the language definition. That defines both 'in' and 'is' > as equality operators, and defines exactly what a chain > of equality operators means. > > In this case, it means: > > (0 in l) and (l is False) > > The and short circuits, giving the result of False without > ever doing the final comparison. > > Granted, that's not exactly obvious...
Thanks ; you learn something every day :) -- http://mail.python.org/mailman/listinfo/python-list
