Course
Add List Items
Python Tutorial
This Python tutorial has been written for the beginners to help them understand the basic to advanced concepts of Python Programming Language. After completing this tutorial, you will find yourself at a great level of expertise in Python, from where you can take yourself to the next levels to become a world class Software Engineer.
Add List Items
There are two methods of the list class, append() and insert(), that are used to add items to an existing list.
Example 1
The append() method adds the item at the end of an existing list.
list1 = ["a", "b", "c", "d"]print ("Original list: ", list1)list1.append('e')print ("List after appending: ", list1)
Output
Original list: ['a', 'b', 'c', 'd']List after appending: ['a', 'b', 'c', 'd', 'e']
Example 2
The insert() method inserts the item at a specified index in the list.
list1 = ["Rohan", "Physics", 21, 69.75]print ("Original list ", list1)
list1.insert(2, 'Chemistry')print ("List after appending: ", list1)
list1.insert(-1, 'Pass')print ("List after appending: ", list1)
Output
Original list ['Rohan', 'Physics', 21, 69.75]List after appending: ['Rohan', 'Physics', 'Chemistry', 21, 69.75]List after appending: ['Rohan', 'Physics', 'Chemistry', 21, 'Pass', 69.75]
We know that "-1" index points to the last item in the list. However, note that, the item at index "-1" in the original list is 69.75. This index is not refreshed after appending 'chemistry'. Hence, 'Pass' is not inserted at the updated index "-1", but the previous index "-1".
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