Hi Victor, I've gotta say that I much prefer the second version here.
> temporal = [] > temporal = [ [x[1][1], (x[0], description[x[0]], > x[1][0], x[1][1], x[1][2] ) ] for x in elements ] > temporal.sort() > temporal.reverse() # sort descending > elements = [ x[1] for x in temporal ] > > > temporal = [] > for x in elements: > lst = [x[0], description[x[0]]] > lst.extend(x[1]) > temporal.append([x[1][1], lst]) > temporal.sort() > temporal.reverse() # sort descending > elements = [ x[1] for x in temporal ] > That looks a lot easier to rtead (and debug) and will I suspect be easier to maintain. Copmprehensions are great but unfortunately can rapidly become incomprehensible! > Is there a way to use list comprehensions to append or extend the array > as needed by the second code listing? There may be but I wouldn't try. I might however look at using a simple list or dictionary of objects based on a class... It might be easier. Alan G _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor