On Sat, 29 Mar 2014 17:07:20 -0400, Roy Smith wrote: > I certainly agree that things like > >> if a is not b is not None: ... > > belong in an obfuscated coding contest.
Apart from the fact that I got it wrong (that's what happens when I post at 6am after being up all night, thanks for the correction Lele), if you consider chained comparisons to be "obfuscated", I think you're not really fluent at Python. The OP even suggested `a != None != b` so I think that (s)he at least understands chained comparisons. However, I agree with Johannes that inverted conditions (using "not") are sometimes harder to reason about than "regular" conditions. -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
