by Sai gowtham

How to add elements at the beginning of a list in Python

In this tutorial, we are going to learn about two different ways to add a new elements to the beginning of a list in Python.

Using insert() method

To add a element at the beginning of a list, we can use the insert() method in python.

The insert() method accepts two arguments, the first argument is index of an element, and the second argument is value that is inserted in that index.

Here is an example:

list =  [2,3,4]

list.insert(0, 1) # adding 1 at beginning

print(list) # [1,2,3,4]

Using [] and + operators

We can also use the [] and + plus operators to insert a new element at the beginning of a list.

Example:

list =  [2,3,4]

result = [1] + list # adding 1 at beginning

print(result) # [1,2,3,4]

In the above example, we have concantenated two lists using + operator.

You can also add multiple elements at the beginning of a list like this:

list =  [3,4,5]

result = [0, 1, 2] + list # adding 0,1,2 at beginning

print(result)

Output:

[0, 1, 2, 3, 4, 5]

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