On Fri, Feb 27, 2015 at 9:42 PM, Dan Sommers <dan at tombstonezero.net> wrote: > I don't think I've ever used the builtin function id in a program. > Ever. Not even once. Honestly, what is a valid use case? If you have a dict that you want to key on object identity rather than equality, then you can use object ids as the keys.