Hi -- Some time ago I ran across a comment recommending using <var> is None instead of <var> == None (also <var> is not None, etc.) My own testing indicates that the former beats the latter by about 30% on average. Not a log for a single instruction but it can add up in large projects.
I'm looking for a (semi)-official statement on this, but couldn't find one with normal googling. Can someone please send a link? -- http://mail.python.org/mailman/listinfo/python-list
