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Ex 8: Free Dessert Offer

Problem​

We’re designing a billing system for a restaurant. Depending on the total bill amount entered by the customer, they might get a free dessert.

Rules​

  • Define get_delivery_offer(bill_amount: float) -> str.
  • If the bill amount is greater than 500, return "We get a free dessert!".
  • Otherwise return "No free dessert this time.".

Boilerplate​

Copy below code and paste to our IDE for head start.

# Write our code inside this function
def get_delivery_offer(bill_amount: float) -> str:
    pass # remove this

# Call with test data
print(get_delivery_offer(600))
print(get_delivery_offer(450))

Expected Output​

We get a free dessert!
No free dessert this time.

Solution​

Only view the solution after trying our best.

Show solution
def get_delivery_offer(bill_amount: float) -> str:
    if bill_amount > 500:
        return "We get a free dessert!"
    return "No free dessert this time."

# Test calls
print(get_delivery_offer(600))
print(get_delivery_offer(450))

Details​

Since return immediately exits the function, we don't need an else block here. If the if condition is true, the first string is returned and the function stops. Otherwise, it simply falls through to the final return.