On Tuesday 14 February 2006 20:57, Michael Broe wrote: ... > But I can't see a way to do this in a list comprehension: > > >>> map (pow, [2, 2, 2, 2], [1, 2, 3, 4]) > [2, 4, 8, 16]
>>> [ x**y for x,y in zip([2,2,2,2],[1,2,3,4]) ] [2, 4, 8, 16] To me this is clearer. (despite having written some substantial amount of code in SML - a functional language where higher order functions are common) Why ? Because it's easier to mentally break down into its parts for someone less familiar with tools like map. >>> zip([2,2,2,2],[1,2,3,4]) [(2, 1), (2, 2), (2, 3), (2, 4)] >>> [ x**y for x,y in [(2, 1), (2, 2), (2, 3), (2, 4)] ] [2, 4, 8, 16] > Is there a way to do something like the following in a list > comprehension? > > map(pow, [1, 7, 6, 2], [3, 8, 2, 5]) >>> [ x**y for x,y in zip([1,7,6,2],[3,8,2,5]) ] [1, 5764801, 36, 32] Regards, Michael. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
