Matt Williams wrote: > Dear All, > > I'm trying to write something to calculate rule priorities, based on > their provenance (ultimately I'm after a lexicographic ordering)
I don't understand your problem description at all but maybe this will help. If you sort a list of lists or a list of tuples it will be a lexicographical sort. And the sort() method takes an optional key= parameter which is a function that creates a sort key. So if you can create a key off your terms then you can sort off that. > > I have a set of terms (the provenances) I'm try to sort. I've done it by > associating each possible set of terms with a dictionary, and then using > the elements of the set as keys of the dictionary, so that it can look > up the values. This is (almost certainly) sub-optimal, but ok for now.... If you have some working code it would probably be helpful to see it. Then we can help you improve it. Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
