mpb added the comment: Of your 4 suggestions, I mentioned #3 and #4 in my post. They are less readable, IMO.
1 and 2 are nicer, but both have an "extra" set of nested parenthesis. While I appreciate the suggestions, I submitted this as a documentation bug, because I think I should be able to find these suggestions somewhere in the Python 3 documentation, at one (or more) of the links I included in my bug report. Also, the Python 3 documentation does mention NoneType, and if NoneType is not part of Python 3, I claim this is an error in the documentation. And then, there is my personal favorite work-around: NoneType = type (None) # only needed once assert type (v) in ( bytes, NoneType ) Or (perhaps more confusingly, LOL!): none = type (None) assert type (v) in ( bytes, none ) isinstance is more confusing because it takes two arguments. Whenever I use it I have to think, "isinstance" vs "instanceof", which is Python, which is Java? (And I haven't used Java seriously in years!) And then I have to think about the order of the arguments (v, cls) vs (cls, v). type is just simpler than isinstance. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue19438> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
