Concatenating the two lists in Python

In this tutorial, we are going to learn how to concatenate the two lists in Python with the help of examples.

Concatenation means the joining of two lists into a single list.

Using + plus operator

To concatenate the two lists into a single list, we can use the + operator in Python.

Here is an example:

list1 = [1, 2, 3]
list2 = [4, 5, 6]
result = list1 + list2 # joining two lists

print(result)

Output:

[1, 2, 3, 4, 5, 6]

Using the extend() method

We can also use the built-in extend() method in python, to join a list 2 to the end of list 1.

Here is an example:

list1 = [1, 2, 3]
list2 = [4, 5, 6]
list1.extend(list2) # joining two lists

print(result)

Output:

[1, 2, 3, 4, 5, 6]

Or we can use the * unpacking operator in Python.

list1 = [1, 2, 3]
list2 = [4, 5, 6]

result = [*list1, *list2] # joining two lists

print(result)

The * unpacking operator unpacks the iterables (such as lists, tuples etc) into a individual elements.