1.  >>> mylist = [25, 5, 15, 45, 30]
2.  >>> mylist.append(55)
3.  >>> mylist
4.  [25, 5, 15, 45, 30, 55]
5.  >>> mylist.sort()
6.  >>> mylist
7.  [5, 15, 25, 30, 45, 55]
8.  >>> mylist.reverse()
9. >>> mylist
10. [55, 45, 30, 25, 15, 5]
11. >>> mylist.pop()
12. 5
13. >>> mylist2 = [3, 4, 6]
14. >>> mylist.extend(mylist2)
15. >>> mylist
16. [55, 45, 30, 25, 15, 3, 4, 6]