ex10

"""Self-Checkout Exercise"""

def main():
    """Runs prompts"""
    subtotal = user_selection()
    calculation(subtotal)

def user_selection():
    """Prompts user for price of items"""
    counter = 1
    subtotal = 0
    shopping = True

    while shopping != False:
        item_price = int(input("Please enter the price of item {}. Enter -1 if you have no more items: ".format(counter)))
        if item_price == -1:
            shopping = True
            return subtotal
        quantity = int(input("Please enter quantity of item {}: ".format(counter)))
        total_set_value = item_price*quantity
        subtotal += total_set_value
        counter+=1
    return subtotal

def calculation(subtotal:int):
    tax_constant = 1.055
    tax = round(subtotal*.055,2)
    total = round(tax_constant*subtotal,2)
    print("Subtotal: ${}".format(subtotal))
    print("Tax: ${}".format(tax))
    print("Total: ${}".format(total))

if __name__ == '__main__':
    main()