python lists confusion

Question

nums = [5, 4, 3, 2, 1]
print(nums[1])

the result is 4 , why? can anyone explain?

Answer 1

Oh i figured it out,because in order to get 5 you must print [0] to get the first number

Answer 2

array list tuple
postion always stars with 0
ends with (total length-1)