Python/sage: can lists start at index 1?

Question

I\'ve downloaded from a supposedly serious source a sage script. It doesn\'t work on my computer, and a quick debugging showed that a problem came from the fact that at some

Answer 1

Well I too was facing the same idea on how to implement the method of indexing to be start from 1. I wanted to implement the Insertion Sort Algorithm which is as follows:

As we already know python list start from 0, what I did was following:

A = ['dummy',5,2,6,4,1,3]
for j in range(2,len(A)):
    key = A[j]
    i=j-1
    while i>0 and A[i]>key:
        A[i+1] = A[i]
        i = i-1
    A[i+1] = key
A.pop(0)
print A

I Just added a 'Dummy' in index 0, did all the work like in Algorithm and removed the 'dummy' again. This was just a cheating method.