Lists in Python are mutable, which means you can change, replace, or update their items after the list has been created. This makes lists a flexible data structure for storing and managing data.

In this tutorial, you'll learn how to update a single item and multiple items in a Python list.

Change a Single Item

To update a single item in a list, use its index number and assign a new value.

Syntax

list_name[index] = new_value
            

Example

fruits = ["Apple", "Banana", "Mango"] 
fruits[1] = "Orange" 
print(fruits)
            

Output:

['Apple', 'Orange', 'Mango']
            

In this example, the item at index 1 ("Banana") is replaced with "Orange".

Change Multiple Items

You can update multiple items at once by specifying a range of indexes and assigning a new list of values.

Syntax

list_name[start:end] = [new_values]
            

Example

fruits = ["Apple", "Banana", "Mango", "Grapes"] 
fruits[1:3] = ["Orange", "Pineapple"] 
print(fruits)
            

Output:

['Apple', 'Orange', 'Pineapple', 'Grapes']
            

The items from index 1 to 2 are replaced with the new values.