On Monday 20 July 2009 21:26:07 Phillip B Oldham wrote: > On Jul 20, 6:08 pm, Duncan Booth <duncan.bo...@invalid.invalid> wrote: > > The main reason why you need both lists and tuples is that because a > > tuple of immutable objects is itself immutable you can use it as a > > dictionary key. > > Really? That sounds interesting, although I can't think of any real- > world cases where you'd use something like that.
simplest is something like a point in the cartesian plane with an associated attribute like colour. - Hendrik -- http://mail.python.org/mailman/listinfo/python-list