Nested Lists in Python (Overview) - Python Tutorial for Beginners

Published: 18 March 2021
on channel: Digital Academy

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🖥️ Nested Lists in Python (Overview)

A list can contain sublists as an item, which in turn can contain sublists themselves, and so on. This is known as Nested Lists in Python. You can use them to arrange data into some hierarchical structures.

Nested List in Python
my_list = ["mouse", [8, 4, 6], ['a']]

○ How to Access Items from Nested Lists in Python?

Similarly, you can access individual items in a Nested List, using multiple indexes. The first index determines which List to use, and the second indicates the value within that second list. Indexes for the items in a Nested List are illustrated as below.

But, also keep in mind that the deeper you are going to get an item, the more complex it will become, because of its syntax. So, it is sometimes more efficient to use another and more adapted Data Type in Python.

my_list = ['a', 'b', ['cc', 'dd', ['eee', 'fff']], 'g', 'h']

print(my_list[2][2]) # OUTPUT: ['eee', 'fff']
print(my_list[2][2][0]) # OUTPUT: eee

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