mylist = [1, 2, 3, 4, 5]
mylist.append(10) => [1, 2, 3, 4, 5, 10]
mylist.pop(4) => [1, 2, 3, 4, 10]
mylist.reverse() => [10, 4, 3, 2, 1]
mylist.sort() => [1, 2, 3, 4, 10]
mylist.index(4) => 3
mylist.extend([8]) => [1, 2, 3, 4, 10, 8]
mylist.insert(2, 8) => [1, 2, 8, 3, 4, 10, 8]
mylist.count(8) => 2
new_list = mylist.copy() => new_list[1, 2, 8, 3, 4, 10, 8]
mylist.clear() => []