Better way to swap elements in a list?

Question

I have a bunch of lists that look like this one:

l = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

I want to swap elements as follows:

fi         


        

Answer 1

I don't see anything wrong with your implementation at all. But you could perhaps do a simple swap instead.

l =  [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for i in range(0, len(l), 2):
    old = l[i]
    l[i] = l[i+1]
    l[i+1] = old

EDIT Apparently, Python has a nicer way to do a swap which would make the code like this

l =  [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for i in range(0, len(l), 2):
    l[i], l[i+1] = l[i+1], l[i]