Question

• Program must use Python 3
• Your program must have a welcome message for the user.
• Your program must have one class called CashRegister.
  • Your program will have an instance method called addItem which takes one parameter for price. The method should also keep track of the number of items in your cart.
  • Your program should have two getter methods.
    • getTotal – returns totalPrice
    • getCount – returns the itemCount of the cart
• Your program must create an instance of the CashRegister class.
• Your program should have a loop which allows the user to continue to add items to the cart until they request to quit.
• Your program should print the total number of items in the cart.
• Your program should print the total $ amount of the cart.
  • The output should be formatted as currency. Be sure to investigate the locale class. You will need to call locale.setlocale and locale.currency.

Answer 1

PYTHON CODE:

import locale

class CashRegister:

    # constructor to initialize the object
    def __init__(self):

        self.totalPrice = 0
        self.itemCount = 0

    # method to add an item to the cart
    def addItem(self,price):
        self.totalPrice += price
        self.itemCount += 1

    # method to get the total price of the items in the cart
    def getTotal(self):
        return self.totalPrice

    # method to get the total number of items in the cart
    def getCount(self):
        return self.itemCount
  

if __name__=='__main__':

    # welcome message
    print('* * * Welcome to Simple Cash Register Program * * *\n')

    # creating CashRegister object
    cart=CashRegister()

    # infinite loop
    while True:

            # getting input from the user
            price = input('Enter price of an item to add (Enter "quit" to end): ')

            price=price.lower()

            # checking for quit condition
            if price == 'quit':
                break

            try:
                # converting string into float
                price=float(price)

                # adding the item price to the cart
                cart.addItem(price)
              
            except ValueError:
                print('\nError: Invalid input.\n')

    # setting the locale
    locale.setlocale(locale.LC_ALL,"us")

    # printing the number of items
    print('\nTotal number of items in the cart = %d' % cart.getCount())

    # printing the total price of the items
    print('\nTotal Amount = %s' % locale.currency(cart.getTotal()))
  

SCREENSHOT FOR CODING:

SCREENSHOT FOR OUTPUT: