my_list = ['p', 'r', 'o', 'b', 'e']
# first item
print(my_list[0]) # p
# third item
print(my_list[2]) # o
# fifth item
print(my_list[4]) # e
# Nested List
n_list = ["Happy", [2, 0, 1, 5]]
# Nested indexing
print(n_list[0][1])
print(n_list[1][3])
# Error! Only integer can be used for indexing
print(my_list[4.0])

# it appends a list into a list
list1 = [1,2,3,4,5]
list1.append([6,7])
# ouput = [1, 2, 3, 4, 5, [6, 7]]