Hi Antonio,
Unfortunately, I don't think it's apparent whether or not a function applies mutations or is a pure computation. In Python, those are by convention or documentation rather than part of the language. There are other programming languages can control the effects and scope of mutation, but Python is not one of those languages. In particular, I know from experience that list.sort() mutates the list, and so it doesn't return a useful return value. On the other hand, there's a separate built-in function called "sorted()" that can sort lists, and it does not mutate the original list. ################################### >>> lst = [3, 1, 4, 1, 5, 9, 2, 6] >>> lst2 = sorted(lst) >>> lst [3, 1, 4, 1, 5, 9, 2, 6] >>> lst2 [1, 1, 2, 3, 4, 5, 6, 9] ################################### See: https://docs.python.org/2/library/functions.html#sorted _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
