Append Objects in a List in Python

List is one of the most commonly used data structures provided by python. List is a data structure in Python that is mutable and has an ordered sequence of elements.

In this article, we will discuss how to add objects to a list and the different ways to add objects, such as append(), insert(), and extend() methods, in Python.

Using append() method

In this method, we use append() to add objects to a list. The append() method adds a new element to the end of a list that already exists.

Example 1

In this example, we used the append() method to add objects to a list. Here, we have added another name to the list of names(names_list).

names_list = ["Meredith", "Levi", "Wright", "Franklin"]
names_list.append("Kristen")
print(names_list)

Output

After running the program, you will get this result:

['Meredith', 'Levi', 'Wright', 'Franklin', 'Kristen']

Example 2

Following is another example to append the element to a list -

numbers_list = [2, 5, 46, 78, 45]
numbers_list.append(54)
print ('The list with the number appended is:',numbers_list)

Output

This output will be displayed when the program runs:

The list with the number appended is: [2, 5, 46, 78, 45, 54]

Using the insert() method

In this method, we use insert() to add objects to a list. The insert() method adds a new element at the specified position of the list.

Example

In this example, to add an item at the 2nd position of the list, we used the insert() method.

lst = ["Bat", "Ball"]
lst.insert(2,"Wicket")
print(lst)

Output

The output of the above program is as follows.

['Bat', 'Ball', 'Wicket']

Using the extend() method

In this method, we will look at extend() method to combine all elements from one list into another by concatenating (adding) them together.

Example

In the following code, we will concatenate two lists using the extend() method.

names_list = ["Meredith", "Levi"]
othernames_list = [ "Franklin", "Wright"]
names_list.extend(othernames_list)
print(names_list)

Output

You will see this result after executing the program:

['Meredith', 'Levi', 'Franklin', 'Wright']