Python: Appending Multiple Items to a List

The extend() method can be used to append multiple items to the end of a list. Executing the following statements    

produces as output  

[0, 1, 2, 3, 4, 5, 6 ]

The extend() method takes a single argument which must be list object. The entire contents of the argument is appended to the end of the list for which the method was invoked. reference: Python for Java Programmers