get last element of a list python

1a = [1, 2, 3, 4]
2print(a[-1])
3#prints: 4
4
5print(a[-2])
6#prints: 3

1number_list = [1, 2, 3]
2print(number_list[-1]) #Gives 3
3
4number_list[-1] = 5 # Set the last element
5print(number_list[-1]) #Gives 5
6
7number_list[-2] = 3 # Set the second to last element
8number_list
9[1, 3, 5]

1list1 = ['a','b','c']
2print(list1[-1])
3
4

1>>> some_list = [1, 2, 3]
2>>> some_list[-1] = 5 # Set the last element
3>>> some_list[-2] = 3 # Set the second to last element
4>>> some_list
5[1, 3, 5]