Alternate Python List Reverse Solution Needed

Question

I had a job interview today. During it I was asked to write down an algorithm that will reverse a list. First I offered the answer using the reversed() method:

Answer 1

I like this way:

def reverse(arr):
    for i in range(len(arr) / 2): 
        arr[-i-1], arr[i] = arr[i], arr[-i-1]

Basically iterating through the first half of the array and swapping i and len(i)-i-1.