Nested conditional execution in Python - Mini Project: Build & Apply

Nested Conditional Execution

📖 Scenario: You are creating a simple program to help a coffee shop decide the price of a coffee order based on the size and whether the customer wants extra syrup.

🎯 Goal: Build a program that uses nested if statements to determine the final price of a coffee order based on size and syrup choice.

📋 What You'll Learn

Create a variable size with exact values: 'small', 'medium', or 'large'

Create a variable extra_syrup with exact boolean values: True or False

Use nested if statements to set the price based on size and extra_syrup

Print the final price as a float with two decimal places

💡 Why This Matters

🌍 Real World

Coffee shops and many businesses use nested conditions to decide prices or options based on multiple choices customers make.

💼 Career

Understanding nested conditions is important for writing clear decision-making code in software development, especially in user input handling and business logic.

1

Set up the coffee order variables

Create a variable called size and set it to the string 'medium'. Create another variable called extra_syrup and set it to True.

Python

# Create the variables size and extra_syrup with the exact values
# Your code here

Need a hint?

Use = to assign values. Strings need quotes, booleans are True or False.

2

Create a base price variable

Create a variable called price and set it to 0.0 as a starting point for the coffee price.

Python

size = 'medium'
extra_syrup = True
# Create a variable price and set it to 0.0
# Your code here

Need a hint?

Start with a price of zero before deciding the final price.

3

Use nested if statements to set the price

Use nested if statements with size and extra_syrup to set price as follows:
- If size is 'small', price is 2.0, add 0.5 if extra_syrup is True.
- If size is 'medium', price is 3.0, add 0.5 if extra_syrup is True.
- If size is 'large', price is 4.0, add 0.5 if extra_syrup is True.

Python

size = 'medium'
extra_syrup = True
price = 0.0
# Use nested if statements to set price based on size and extra_syrup
# Your code here

Need a hint?

Check the size first, then inside that check if extra_syrup is True to add 0.5.

4

Print the final price

Print the price variable formatted to two decimal places using print(f"{price:.2f}").

Python

size = 'medium'
extra_syrup = True
price = 0.0

if size == 'small':
    price = 2.0
    if extra_syrup:
        price += 0.5
elif size == 'medium':
    price = 3.0
    if extra_syrup:
        price += 0.5
elif size == 'large':
    price = 4.0
    if extra_syrup:
        price += 0.5

# Print the price formatted to two decimal places
# Your code here

Need a hint?

Use an f-string to format the price with two decimals.