Using range over slicing when looping through lists

[GJG]

Hi Folks! Beginner question. Which one of these two are less processor costly?

my_list = [2, 3, 11, 5, 1, 9, 7, 15, 13]
largest = my_list[0]

for i in range(1, len(my_list)):
    if my_list[i] > largest:
        largest = my_list[i]

print(largest)

Or

my_list = [2, 3, 11, 5, 1, 9, 7, 15, 13]
largest = my_list[0]

for i in my_list[1:]:
    if i > largest:
        largest = i

print(largest)

Or not much of a difference, except that latter looks more elegant ?
Thank you!