Can you give an example of how to use collections in Python to store data?

In Python, built-in collections such as lists, tuples, sets, and dictionaries are often used to store data.

For example, to store a list of users with their ages, you can use a dictionary:

users = {
    'alice': 30,
    'bob': 25,
    'carol': 27
}

# Add a new user
users['dave'] = 22

# Get a user's age
print(users['alice'])  # 30

If you need to store an ordered set of elements, a list is suitable:

fruits = ['apple', 'banana', 'cherry']
fruits.append('date')
print(fruits)  # ['apple', 'banana', 'cherry', 'date']

For unique elements, a set is used:

unique_ids = {1, 2, 3}
unique_ids.add(2)  # will not be added, since 2 already exists
print(unique_ids)  # {1, 2, 3}

Thus, the choice of collection depends on the task and data requirements.