Set creation in Python - Mini Project: Build & Apply

Set creation

📖 Scenario: You are organizing a small event and want to keep track of unique guests who have RSVP'd. You will use a set to store the names of guests because sets automatically avoid duplicates.

🎯 Goal: Create a set of guest names, add a few names, and then display the set to see the unique guests.

📋 What You'll Learn

Create a set called guests with the names 'Alice', 'Bob', and 'Charlie'.

Create a variable called new_guest and set it to 'Alice'.

Add the new_guest to the guests set.

Print the guests set to show all unique guest names.

💡 Why This Matters

🌍 Real World

Sets are useful to keep track of unique items like guest lists, product IDs, or tags without duplicates.

💼 Career

Understanding sets helps in data cleaning, filtering unique values, and optimizing searches in many programming jobs.

1

Create the initial set of guests

Create a set called guests with these exact names: 'Alice', 'Bob', and 'Charlie'.

Python

# Create the set guests with 'Alice', 'Bob', and 'Charlie'
guests = set()
# Your code here

Need a hint?

Use curly braces {} to create a set with the names inside separated by commas.

2

Add a new guest variable

Create a variable called new_guest and set it to the string 'Alice'.

Python

guests = {'Alice', 'Bob', 'Charlie'}
# Create a variable new_guest and set it to 'Alice'
# Your code here

Need a hint?

Use = to assign the string 'Alice' to the variable new_guest.

3

Add the new guest to the set

Add the guest stored in new_guest to the guests set using the add() method.

Python

guests = {'Alice', 'Bob', 'Charlie'}
new_guest = 'Alice'
# Add new_guest to guests set
# Your code here

Need a hint?

Use guests.add(new_guest) to add the new guest to the set.

4

Display the unique guests

Print the guests set to show all unique guest names.

Python

guests = {'Alice', 'Bob', 'Charlie'}
new_guest = 'Alice'
guests.add(new_guest)
# Print the guests set
# Your code here

Need a hint?

Use print(guests) to display the set. The order may vary but the names should be unique.