Frozen set behavior in Python - Mini Project: Build & Apply

Frozen set behavior

📖 Scenario: Imagine you have a collection of unique fruits that you want to keep safe from any changes. You want to make sure no one can add or remove fruits from this collection once it's set.

🎯 Goal: You will create a frozen set of fruits, check if a fruit is in the frozen set, and try to add a fruit to see what happens.

📋 What You'll Learn

Create a frozen set called fruits with the exact items: 'apple', 'banana', 'cherry'

Create a variable called check_fruit and set it to 'banana'

Use an if statement to check if check_fruit is in fruits and create a variable result with the message 'banana is in the frozen set' or 'banana is not in the frozen set'

Print the result variable

💡 Why This Matters

🌍 Real World

Frozen sets are useful when you want to keep a collection of items safe from accidental changes, like a fixed list of allowed users or settings.

💼 Career

Understanding immutable collections like frozen sets helps in writing safer code that prevents bugs caused by unwanted changes.

1

Create a frozen set of fruits

Create a frozen set called fruits with these exact items: 'apple', 'banana', 'cherry'

Python

# Create the frozen set fruits with 'apple', 'banana', 'cherry'
# Your code here

Need a hint?

Use the frozenset() function with a list of fruits inside.

2

Set the fruit to check

Create a variable called check_fruit and set it to the string 'banana'

Python

fruits = frozenset(['apple', 'banana', 'cherry'])
# Create the variable check_fruit and set it to 'banana'
# Your code here

Need a hint?

Just assign the string 'banana' to the variable check_fruit.

3

Check if the fruit is in the frozen set

Use an if statement to check if check_fruit is in fruits. Create a variable result with the message 'banana is in the frozen set' if true, otherwise 'banana is not in the frozen set'

Python

fruits = frozenset(['apple', 'banana', 'cherry'])
check_fruit = 'banana'
# Use if to check if check_fruit is in fruits and set result accordingly
# Your code here

Need a hint?

Use if check_fruit in fruits: to check membership and assign the correct message to result.

4

Print the result

Write a print statement to display the value of the variable result

Python

fruits = frozenset(['apple', 'banana', 'cherry'])
check_fruit = 'banana'
if check_fruit in fruits:
    result = 'banana is in the frozen set'
else:
    result = 'banana is not in the frozen set'
# Print the result variable
# Your code here

Need a hint?

Use print(result) to show the message.