Python list extend

In this article, you’ll see how to extend a list in Python. The extend method is used to add the elements of a new list. It adds elements of the new list at the end of the original list. This method takes only one argument. The argument should be a list or a tuple. I highly recommend you get the “Python Crash Course Book” to learn Python.

Example 1: Extend a list

a = [5, 8, 10, 15, 20]
a.extend([25, 30, 35])
print(a)

Output:

[5, 8, 10, 15, 20, 25, 30, 35]

Example 2: Add a tuple

a = [5, 8, 10, 15, 20]
a.extend((3,6,9,15))
print(a)

Output:

[5, 8, 10, 15, 20, 3, 6, 9, 15]

Example 3:

a = [5, 8, 10, 15, 20]
b = [25, 30, 35]
a.extend(b)
print(a)

Output:

[5, 8, 10, 15, 20, 25, 30, 35]

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