Question

What the different ways to insert an element in a list. Explain with a suitable example.

Answer 1

append() function in Python is used to add more elements to a list. But, it includes elements at the end of a list. If you want to include an element at your desired position, you can use the insert () function is used to insert an element at any position of a list.

Syntax:

list.insert(position_index, element)

Example:

>>> MyList=[34,98,47, ‘Kannan’, ‘Gowrisankar’, ‘Lenin’, ‘Sreenivasan’ ]
>>> print(MyList)
[34, 98, 47, ‘Kannan’, ‘Gowrisankar’, ‘Lenin’, ‘Sreenivasan’]
>>> MyList.insert(3, ‘Ramakrishnan’)
>>> print(MyList)
[34, 98, 47, ‘Ramakrishnan’, ‘Kannan’, ‘Gowrisankar’, ‘Lenin’, ‘Sreenivasan’]

In the above example, the insert function inserts a new element ‘Ramakrishnan’ at the index value 3, i.e., at the 4th position. While inserting a new element in between the existing elements, at a particular location, the existing elements shift one position to the right.