list 1 python

1l = [1,2,5,9,7,4,5]
2
3# what are you referring to?
4# 1) l[-1] is the last element of list
5print(l[-1])
6>>> 5
7
8# 2) l[:-1] returns all the elements of the list but the last one
9print(l[:-1])
10>>> [1,2,5,9,7,4]