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The extend( ) Function
Using the append( ) function, we can only add one element at a time. For adding more than one
element, we use the extend( ) function. Syntax of using extend() function is:
list_name.extend(iterable value)
Program 17: To add elements to an existing list using extend() function
Program17.py
File Edit Format Run Options Window Help
a=[1,2,3,4,5]
a.extend([6,7,8,9])
print (a)
Output
[1, 2, 3, 4, 5, 6, 7, 8, 9]
THE del STATEMENT
We use the del statement to remove an element or a slice of element from a list. Syntax for using
del statement is:
del list_name[start : stop : step]
Program 18: To delete elements from the list
Program18.py
File Edit Format Run Options Window Help
a=[1,2,3,4,5,6,7]
del a[1:3:2]
print (a)
Output
[1, 3, 4, 5, 6, 7]
Program 19: To delete the whole list
Program19.py
File Edit Format Run Options Window Help
a=[1,2,3,4,5,6,7]
del a
The whole list will be deleted.
Functions, String and List in Python 117

