How do I work with nested collections in Python?

How do I work with nested collections in Python?

In Python, nested collections refer to collections like lists or dictionaries that contain other collections. For example, a list of dictionaries or a dictionary of lists.

Can you give me an example of a nested dictionary?

Sure! Here's an example:

nested_dict = {
    'student1': {'name': 'Alice', 'age': 20},
    'student2': {'name': 'Bob', 'age': 22}
}

This dictionary contains two keys, each mapping to another dictionary.

How can I access the name of student2?

You can access it like this:

nested_dict['student2']['name']

This will return 'Bob'.

What about a list of dictionaries?

Here's an example of a list of dictionaries:

students = [
    {'name': 'Alice', 'age': 20},
    {'name': 'Bob', 'age': 22}
]

You can access the name of the first student with students[0]['name'], which will return 'Alice'.