The last element (rightmost) of the list has the index -1; its adjacent left element is present at the index -2 and so on until the left-most elements are encountered.
PROGRAM
list = [1,2,3,4,5]
print(list[-1])
print(list[-3:])
print(list[:-1])
print(list[-3:-1])
Output:
5
[3, 4, 5]
[1, 2, 3, 4]
[3, 4]
