Question

Hi, can someone offer input on how to address these 4 remain parts the zybook python questions?  

4: Tests that get_num_items_in_cart() returns 6 (ShoppingCart)

Your output

ADD ITEM TO CART Enter the item name: Traceback (most recent call last): File "zyLabsUnitTestRunner.py", line 10, in <module> passed = test_passed(test_passed_output_file) File "/home/runner/local/submission/unit_test_student_code/zyLabsUnitTest.py", line 8, in test_passed cart.add_item(item1) File "/home/runner/local/submission/unit_test_student_code/main.py", line 30, in add_item item_name = str(input('Enter the item name:\n')) EOFError: EOF when reading a line

5: Test that get_cost_of_cart() returns 10 (ShoppingCart)

Your output

ADD ITEM TO CART Enter the item name: Traceback (most recent call last): File "zyLabsUnitTestRunner.py", line 10, in <module> passed = test_passed(test_passed_output_file) File "/home/runner/local/submission/unit_test_student_code/zyLabsUnitTest.py", line 9, in test_passed cart.add_item(item1) File "/home/runner/local/submission/unit_test_student_code/main.py", line 30, in add_item item_name = str(input('Enter the item name:\n')) EOFError: EOF when reading a line

# Type code here

# code 1

# obtaining 21 of the 29 points

class ItemToPurchase:

    def __init__(self, item_name='none', item_description='none', item_price=0, item_quantity=0):

        self.item_name = item_name

        self.item_description = item_description

        self.item_price = item_price

        self.item_quantity = item_quantity

    def print_item_cost(self):

        print(self.item_name + " " + str(self.item_quantity) + " @ $" + str(self.item_price) + " = $" + str(

            self.item_price * self.item_quantity))

    def print_item_description(self):

        string = '{}: {}'.format(self.item_name, self.item_description)

        print(string, end='\n')

        return string

   

class ShoppingCart:

    def __init__(self, customer_name='none', current_date='January 1, 2016', cart_items=[]):

        self.customer_name = customer_name

        self.current_date = current_date

        self.cart_items = cart_items

    def add_item(self,ItemToPurchase):

        print('\nADD ITEM TO CART', end='\n')

        item_name = str(input('Enter the item name:\n'))

        item_description = str(input('Enter the item description:\n'))

        item_price = int(input('Enter the item price:\n'))

        item_quantity = int(input('Enter the item quantity:\n'))

        self.cart_items.append(ItemToPurchase(item_name, item_description, item_price, item_quantity))

       

    def remove_item(self):

        print('REMOVE ITEM FROM CART', end='\n')

        string = str(input('Enter name of item to remove:\n'))

        i = 0

        for item in self.cart_items:

            if (item.item_name == string):

                del self.cart_items[i]

                i += 1

                flag = True

                break

            else:

                flag = False

        if (flag == False):

            print('Item not found in cart. Nothing removed.')

    def modify_item(self, ItemToPurchase):

        print('CHANGE ITEM QUANTITY', end='\n')

        name = str(input('Enter the item name:\n'))

        for item in self.cart_items:

            if (item.item_name == name):

                quantity = int(input('Enter the new quantity:\n'))

                item.item_quantity = quantity

                flag = True

                break

            else:

                flag = False

        if (flag == False):

            print('Item not found in cart. Nothing modified.')

    def get_num_items_in_cart(self):

        num_items = 0

        for item in self.cart_items:

            num_items = num_items + item.item_quantity

        return num_items

    def get_cost_of_cart(self):

        total_cost = 0

        cost = 0

        for item in self.cart_items:

            cost = (item.item_quantity * item.item_price)

            total_cost += cost

        return total_cost

    def print_total(self):

        total_cost = self.get_cost_of_cart()

        self.output_cart()

    def print_descriptions(self):

        print('OUTPUT ITEMS\' DESCRIPTIONS')

        print('{}\'s Shopping Cart - {}'.format(self.customer_name, self.current_date), end='\n')

        print('\nItem Descriptions', end='\n')

        for item in self.cart_items:

            print('{}: {}'.format(item.item_name, item.item_description), end='\n')

    def output_cart(self):

        new = ShoppingCart()

        print('OUTPUT SHOPPING CART', end='\n')

        print('{}\'s Shopping Cart - {}'.format(self.customer_name, self.current_date), end='\n')

        print('Number of Items:', new.get_num_items_in_cart(), end='\n\n')

        total_cost = 0

        if (new.get_num_items_in_cart() == 0):

            print('SHOPPING CART IS EMPTY\n')

            print('Total: $0')

        else:

            for item in self.cart_items:

                print('{} {} @ ${} = ${}'.format(item.item_name, item.item_quantity,

                                                 item.item_price, (item.item_quantity * item.item_price)), end='\n')

                total_cost += (item.item_quantity * item.item_price)

            print('\nTotal: ${}'.format(total_cost), end='\n')

       

def print_menu(ShoppingCart, customer_name, current_date):

    newCart = ShoppingCart(customer_name, current_date)

    customer_Cart = newCart

    # declare the string menu

    menu = ('\nMENU\n'

            'a - Add item to cart\n'

            'r - Remove item from cart\n'

            'c - Change item quantity\n'

            'i - Output items\' descriptions\n'

            'o - Output shopping cart\n'

            'q - Quit\n')

    command = ''

    string = ''

    while (command != 'q'):

        print(menu, end='\n')

        command = input('Choose an option:\n')

        while (command != 'a' and command != 'o' and command != 'i' and command != 'r'

               and command != 'c' and command != 'q'):

            command = input('Choose an option:\n')

        if (command == 'a'):

            customer_Cart.add_item(ItemToPurchase)

        if (command == 'o'):

            customer_Cart.output_cart()

        if (command == 'i'):

            customer_Cart.print_descriptions()

        if (command == 'r'):

            customer_Cart.remove_item()

        if (command == 'c'):

            customer_Cart.modify_item(ItemToPurchase)

def main():

    customer_name = str(input('Enter customer\'s name:\n'))

    current_date = str(input('Enter today\'s date:\n'))

    print('\nCustomer name:', customer_name, end='')

    print('\nToday\'s date:', current_date, end='\n')

    print_menu(ShoppingCart, customer_name, current_date)

if __name__ == '__main__':

    main()

Answer 1

I ran your program in python IDLE and it is working fine with the different correct type of input values of shopping cart item. However, I found that if wrong value of item price or item quantity are used in the test data file, the program crashes. See the error as below.
Check your test data, you may get some clue of error.

If error is not removed still, let me know your test data please.