On Thu, Jan 15, 2009 at 1:03 PM, Lambert, David W (S&T) <lamber...@corning.com> wrote: > Overly terse. I do mean that this is illegal: > > isinstance(s, {str, bytes}) > > tuples have order, immutability, and the possibility of repeat items. > > A set is most reasonable in a mathematical sense.
What's wrong with: >>> a = "" >>> b = bytes() >>> any([isinstance(a, x) for x in {str, bytes}]) True >>> any([isinstance(b, x) for x in {str, bytes}]) True >>> cheers James -- http://mail.python.org/mailman/listinfo/python-list