Lists in Python can store different data types, including other lists. For example, when storing **countries and their areas**, it's more organized to use **a separate list for each country** instead of a single combined list.

# Two-dimensional list
countries_2d = [["USA", 9629091], ["Canada", 9984670], ["Germany", 357114]]

# Printing nested list
print(countries_2d)

Each country has its own nested list within the main list. In a two-dimensional list, each element is itself a list, and we access inner items using indexing. For example, in a `countries_2d` list with three sublists, `countries_2d[1]` retrieves the second sublist (indexing starts at `0`), and `countries_2d[1][0]` fetches the first item of that sublist.

# Two-dimensional list
countries_2d = [['USA', 9629091], ['Canada', 9984670], ['Germany', 357114]]

# Pull elements
print(countries_2d[1])
print(countries_2d[1][0])

Which of the following is the correct way to extract values from a nested list?

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How can you retrieve a value from a dictionary by its key?

What is the difference between a tuple and a list?

How can you access the third element in this list?


What does the `copy()` method do for lists in Python?

Is there a strict limit on how deeply you can nest tuples/lists/dictionaries in Python?

How do you update a value in a dictionary?

How would you change "green" to "yellow"?

Nested Lists in Python

Awesome!

Nested Lists in Python