Comments in Python - Mini Project: Build & Apply

Comments in Python

📖 Scenario: You are writing a simple program to calculate the total cost of items you want to buy. To keep your code clear, you will add comments explaining each part.

🎯 Goal: Learn how to write comments in Python to explain your code clearly.

📋 What You'll Learn

Create a variable with a specific value

Add a comment explaining the variable

Write a simple calculation with a comment

Print the result with a comment

💡 Why This Matters

🌍 Real World

Comments are used by programmers to explain their code to others and to themselves when they come back later.

💼 Career

Writing clear comments is important in any programming job to help teams work together and maintain code easily.

1

Create a variable with a comment

Create a variable called price and set it to 100. Add a comment above it that says # Price of the item.

Python

# Price of the item
# Your code here

Need a hint?

Use # to start a comment. Write the comment on the line before the variable.

2

Add a comment for a discount variable

Add a variable called discount and set it to 20. Add a comment above it that says # Discount amount.

Python

# Price of the item
price = 100
# Discount amount
# Your code here

Need a hint?

Remember to add the comment on the line before the variable.

3

Calculate total with a comment

Create a variable called total that subtracts discount from price. Add a comment above it that says # Calculate total price after discount.

Python

# Price of the item
price = 100
# Discount amount
discount = 20
# Calculate total price after discount
# Your code here

Need a hint?

Use the minus sign - to subtract discount from price.

4

Print the total with a comment

Add a comment that says # Print the total price and then print the variable total.

Python

# Price of the item
price = 100
# Discount amount
discount = 20
# Calculate total price after discount
total = price - discount
# Print the total price
# Your code here

Need a hint?

Use print(total) to show the result.