At 08:23 AM 8/12/2007, Steve Holden wrote: >Dick Moores wrote: > > So would a programmer EVER use "is" in a script? > >Sure. For example, the canonical test for None uses > > x is None > >because there is only ever one instance of type Nonetype, so it's the >fastest test. Generally speaking you use "is" to test for identity (do >these two expressions reference the same object) rather than equality >(do these two expressions evaluate to equivalent objects).
Off the top of your head, could you or others give me as many examples as you can think of? Thanks again, Dick -- http://mail.python.org/mailman/listinfo/python-list
