Air Miles Calculator

Practity 11 April, 2024 18 0

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Air Miles Calculator

Write a Python function that calculates the miles gained by frequent travelers when flying with a specific European airline. The program should prompt the user to enter the number of flights he/she has booked during the last year.

If the number of flights is less than 5, the program should ask the user to enter destinations. You should provide four options:
– National
– Europe
– Americas
– Asia

The program should continue requesting the user to enter destinations until they enter “exit” or five destinations have been input.

The miles corresponding to the different destinations are as follows:
– National: 100 miles
– Europe: 200 miles
– Americas: 500 miles
– Asia: 650 miles

If the number of flights booked during the last year is greater than 5, the program should add 400 miles per flight.

Finally, the program should display the total number of miles gained by the user.

It is a Python conditionals exercise to practice how to use conditional statements in real-world problems. If you wish to keep practising Python, visit ou other real projects.

Steps

Define a function calculate_miles to calculate the miles gained by the user.
Prompt the user to enter the number of flights booked during the last year.
Based on the number of flights, it either asks for destinations and calculates miles or directly calculates miles.
Use a list to store the destinations and a “while” loop to keep requesting the user to enter destinations until “exit” is entered or 5 destinations have been input.
Use conditions to calculate miles for different destinations.
Finally, print the total number of miles gained by the user.

Expected ouput:

Enter the number of flights booked during the last year: 3
Enter destination (National, Europe, Americas, Asia) or 'exit' to stop: National
Enter destination (National, Europe, Americas, Asia) or 'exit' to stop: Americas
Enter destination (National, Europe, Americas, Asia) or 'exit' to stop: Asia
Enter destination (National, Europe, Americas, Asia) or 'exit' to stop: exit
Total miles gained: 1250

Solution

# Define the function to calculate miles
def calculate_miles():
    # Ask the user to enter the number of flights booked during the last year
    num_flights = int(input("Enter the number of flights booked during the last year: "))
    total_miles = 0

    # If the number of flights is less than 5
    if num_flights < 5:
        destinations = []
        while len(destinations) < 5:
            destination = input("Enter destination (National, Europe, Americas, Asia) or 'exit' to stop: ")
            if destination.lower() == "exit":
                break
            if destination.lower() in ["national", "europe", "americas", "asia"]:
                destinations.append(destination.lower())
            else:
                print("Invalid destination. Choose from National, Europe, Americas, Asia.")

        # Calculate miles based on destinations
        for dest in destinations:
            if dest == "national":
                total_miles += 100
            elif dest == "europe":
                total_miles += 200
            elif dest == "americas":
                total_miles += 500
            elif dest == "asia":
                total_miles += 650
    else:  # If the number of flights booked during last year is greater than 5
        total_miles = num_flights * 400

    # Print the total number of miles gained by the user
    print(f"Total miles gained: {total_miles}")


# Call the function to calculate miles
calculate_miles()

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