The use of index() here to find the target place where the translation is going to occur is very fragile.
Consider: we conceptually already should know where in the list we want the target to be, since we're walking across the characters in the list. We know that we're looking first at ls[0], transforming it, then ls[2], then ls[3], then... The fact that we're using index() here, to try to recompute that target position, is doing "extra" work: we're searching for something that we should have already known. And it turns out that not only is it superfluous, but it's broken: there may be several places in the list that qualify, not just the one that you're considering. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
