What are nested data structures in Python?
Nested data structures in Python are data structures that contain other data structures. For example, a list can contain other lists, dictionaries, or tuples.
Can you give me an example of a nested list?
Sure! Here's an example: nested_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
. This is a list containing three lists.
How do I access elements in a nested dictionary?
You can access elements in a nested dictionary using keys. For example, if you have nested_dict = {'a': {'b': 1}}
, you can access the value with nested_dict['a']['b']
.
What are some common use cases for nested data structures?
Common use cases include representing complex data like JSON objects, organizing hierarchical data, and managing relationships in databases.
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