Extend the ItemToPurchase class to contain a new attribute.item_description (string) - Set to "none" in default constructorImplement the following method for the ItemToPurchase class.print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter.Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps.Parameterized constructor which takes the customer name and date as parameters Attributescustomer_name (string) - Initialized in default constructor to "none"current_date (string) - Initialized in default constructor to "January 1, 2016"cart_items (list)Methodsadd_item()Adds an item to cart_items list. Has parameter ItemToPurchase. Does not return anything.remove_item()Removes item from cart_items list. Has a string (an item's name) parameter. Does not return anything.If item name cannot be found, output this message: Item not found in cart. Nothing removed.modify_item()Modifies an item's quantity. Has parameter ItemToPurchase. Does not return anything.If item can be found (by name) in cart, modify item in cart.If item cannot be found (by name) in cart, output this message: Item not found in cart. Nothing modified.get_num_items_in_cart() (2 pts)Returns quantity of all items in cart. Has no parameters.get_cost_of_cart() (2 pts)Determines and returns the total cost of items in cart. Has no parameters.print_total()Outputs total of objects in cart.If cart is empty, output this message: SHOPPING CART IS EMPTYprint_descriptions()Outputs each item's description.In main section of your code, prompt the user for a customer's name and today's date. Output the name and date. Create an object of type ShoppingCart.In the main section of your code, implement the print_menu() function. print_menu() has a ShoppingCart parameter, and outputs a menu of options to manipulate the shopping cart. Each option is represented by a single character. Build and output the menu within the function.If the an invalid character is entered, continue to prompt for a valid choice. Hint: Implement Quit before implementing other options. Call print_menu() in the main() function. Continue to execute the menu until the user enters q to Quit. Implement Output shopping cart menu option. Implement Add item to cart menu option. Implement remove item menu option. Implement Change item quantity menu option. Hint: Make new ItemToPurchase object before using ModifyItem() method. ### Shopping Cart Program: Sample Outputs and Implementation Steps#### Example of `print_total()` Output:```John Doe's Shopping Cart - February 1, 2016Number of Items: 8Nike Romaleos 2 @ $189 = $378Chocolate Chips 5 @ $3 = $15Powerbeats 2 Headphones 1 @ $129 = $129Total: $521```#### Example of `print_descriptions()` Output:```John Doe's Shopping Cart - February 1, 2016Item DescriptionsNike Romaleos: Volt color, Weightlifting shoesChocolate Chips: Semi-sweetPowerbeats 2 Headphones: Bluetooth headphones```#### User Input Section in Code:Prompt the user for a customer’s name and today’s date. Display the name and date and create a ShoppingCart object.**Example:**```Enter customer's name:John DoeEnter today's date:February 1, 2016Customer name: John DoeToday's date: February 1, 2016```#### Print Menu Functionality:Implement a `print_menu()` function with a ShoppingCart parameter that outputs a menu of options to manipulate the shopping cart. Each option is represented by a single character. Continue to prompt for a valid choice until "q" is selected.**Menu:**```MENUa - Add item to cartr - Remove item from cartc - Change item quantityi - Output items' descriptionso - Output shopping cartq - QuitChoose an option:```#### Implementing Output Shopping Cart Menu Option (3 points):**Example:**```OUTPUT SHOPPING CARTJohn Doe's Shopping Cart - February 1, 2016Number of Items: 8Nike Romaleos 2 @ $189 = $378Chocolate Chips 5 @ $3 = $15Powerbeats 2 Headphones 1 @ $129 = $129Total: $521```#### Implementing Output Item Descriptions Menu Option (2 points):**Example:**```OUTPUT ITEM'S DESCRIPTIONSJohn Doe's Shopping Cart - February 1, 2016Item DescriptionsNike Romaleos: Volt color, Weightlifting shoesChocolate Chips: Semi-sweetPowerbeats 2 Headphones: Bluetooth headphones```### Implementation Hints: Sure! Here's the transcription suitable for an educational website:---**(7) Implement Add item to cart menu option. (3 pts)****Example:**```ADD ITEM TO CARTEnter the item name:Nike RomaleosEnter the item description:Volt color, Weightlifting shoesEnter the item price:189Enter the item quantity:2```---**(8) Implement remove item menu option. (4 pts)****Example:**```REMOVE ITEM FROM CARTEnter name of item to remove:Chocolate Chips```---**(9) Implement Change item quantity menu option.** *Hint: Make new `ItemToPurchase` object before using ModifyItem() method. (5 pts)***Example:**```CHANGE ITEM QUANTITYEnter the item name:Nike RomaleosEnter the new quantity:3```---This text helps students understand how to implement basic shopping cart functionalities in a programming assignment. Each part illustrates how to prompt for user input to add, remove, or change quantities of items in a cart.

Below is the required python program: - Program: - #Define the class ItemToPurchase class ItemToPurchase: #Define the init method to initialize the variables def __init__(self, name='none', price=0, quantity=0, description='none'): #initialize the item name self.item_name=name #initialize the item description self.item_description=description #initialize the item price self.item_price=price #initialize the item quantity self.item_quantity=quantity #Define the method print_item_cost def print_item_cost(self): #Calculate the total amount total = self.item_price * self.item_quantity #Display the cost of item print('%s %d @ $%d = $%d' % (self.item_name, self.item_quantity, self.item_price, total)) #Define the method print_item_description def print_item_description(self): #Display the item description print('%s: %s' % (self.item_name, self.item_description)) #Define the class ShoppingCart class ShoppingCart: #Define the init method to initialize the variables def __init__(self, customer_name = 'none', current_date = 'January 1, 2016'): #initialize the customer name self.customer_name = customer_name #initialize the current date of purchase self.current_date = current_date #Create the list to store the cart items self.cart_items = [] #Define the method add_item to add item in the list def add_item(self, itemToPurchase): self.cart_items.append(itemToPurchase) #Define the method remove item to remove the item from the list def remove_item(self, itemName): #Set to false tremove_item = False #Use the loop to iterate over the list for item in self.cart_items: #if the item is found if item.item_name == itemName: #Call the remove method and remove the item self.cart_items.remove(item) #Set to true tremove_item = True break #if item not found if not tremove_item: #Display the message print('Item not found in the cart. Nothing removed') #Define the method modify item and pass the parameter def modify_item(self, itemToPurchase): #Set to false tmodify_item = False #Use the loop to iterate for i in range(len(self.cart_items)): #if the item to be purchased is found if self.cart_items[i].item_name == itemToPurchase.item_name: #Set to true tmodify_item = True # check for default values if(itemToPurchase.item_price == 0 and itemToPurchase.item_quantity == 0 and itemToPurchase.item_description == 'none'): break else: if(itemToPurchase.item_price != 0): self.cart_items[i].item_price = itemToPurchase.item_price if(itemToPurchase.item_quantity != 0): self.cart_items[i].item_quantity = itemToPurchase.item_quantity if(itemToPurchase.item_description != 'none'): self.cart_items[i].item_description = itemToPurchase.item_description break #if unable to modify if not tmodify_item: print('Item not found in the cart. Nothing modified') #Define the method to get the number of items in the list def get_num_items_in_cart(self): #initialize with 0 num_items = 0 #Use the loop to iterate for item in self.cart_items: #Determine the total items num_items = num_items + item.item_quantity return num_items #Define the method to get the cost of shopping cart def get_cost_of_cart(self): #initialize with 0 to store the total cost total_cost = 0 #to store the cost of particular item cost = 0 #Use the loop to iterate for item in self.cart_items: #Determine the cost cost = (item.item_quantity * item.item_price) #Determine the total cost total_cost += cost return total_cost #Define the print_total method to print the total cost def print_total(self): #Call the get_cost_of_cart method and store the value total_cost = self.get_cost_of_cart() #if the cart is empty if (total_cost == 0): print('SHOPPING CART IS EMPTY') else: print('{}\'s Shopping Cart - {}'.format(self.customer_name, self.current_date)) print('Number of Items: %d\n' %self.get_num_items_in_cart()) #use the loop to iterate for item in self.cart_items: item.print_item_cost() #print the total cost print('\nTotal: $%d' %(total_cost)) #Define the method print_descriptions def print_descriptions(self): #if the cart is empty if len(self.cart_items) == 0: print('SHOPPING CART IS EMPTY') else: print('{}\'s Shopping Cart - {}'.format(self.customer_name, self.current_date)) print('\nItem Descriptions') #Use the loop to iterate for item in self.cart_items: #print the description item.print_item_description() #define the method print_menu def print_menu(newCart): #create the cart customer_Cart = newCart #Create the menu menu = ('\nMENU\n' 'a - Add item to cart\n' 'r - Remove item from the cart\n' 'c - Change item quantity\n' "i - Output item's descriptions\n" 'o - Output shopping cart\n' 'q - Quit\n') #initialize the variable to opt the user for menu choice = '' #Use the loop to iterate #the loop will terminate when the user enters 'q' while(choice != 'q'): #print the menu print(menu) #Ask the user to enter the choice choice = input('Choose an option:') #use the loop to iterate while(choice != 'a' and choice != 'o' and choice != 'i' and choice != 'q' and choice != 'r' and choice != 'c'): #ask the user to enter the choice choice = input('Choose an option:\n') #if the user enters 'a' if(choice == 'a'): #Display the message print("\nADD ITEM TO CART") #ask the user to enter the name item_name = input('Enter the item name:\n') #ask the user to enter the item description item_description = input('Enter the item description:\n') #ask the user to enter the item price item_price = int(input('Enter the item price:\n')) #ask the user to enter the item quantity item_quantity = int(input('Enter the item quantity:\n')) #Call the itemtoPurchase method and pass the parameters itemtoPurchase = ItemToPurchase(item_name, item_price, item_quantity, item_description) #add the item in the list customer_Cart.add_item(itemtoPurchase) #if the user choose 'o' elif(choice == 'o'): #Display the message print('\nOUTPUT SHOPPING CART') #call the print_total method and display the total cost customer_Cart.print_total() #if the user choose 'i' elif(choice == 'i'): #display the messagee print('\nOUTPUT ITEMS\' DESCRIPTIONS') #call the print_descriptions method and display the itme description customer_Cart.print_descriptions() #if the user enters 'r' elif(choice == 'r'): #display the message print('REMOVE ITEM FROM CART') #ask the user to enter the item name to remove from the cart itemName = input('Enter the name of the item to remove :\n') #remove the item customer_Cart.remove_item(itemName) #if the user enters 'c' elif(choice == 'c'): #display the message print('\nCHANGE ITEM QUANTITY') #ask the user to enter the name of the item itemName = input('Enter the name of the item :\n') #ask the user to enter the new quantity qty = int(input('Enter the new quantity :\n')) #call the methods and modify itemToPurchase = ItemToPurchase(itemName,0,qty) customer_Cart.modify_item(itemToPurchase) #Define the main method def main(): #ask the user to enter the customer name customer_name = input("Enter customer's name:\n") #ask the user to enter the today's date current_date = input("Enter today's date:\n") #print the customer name print("\nCustomer name: %s" %customer_name) #print the current_date print("Today's date: %s" %current_date) #call the init method (ShoppingCart class) newCart = ShoppingCart(customer_name, current_date) #call the print_menu method to print the menu print_menu(newCart) #call the main method main()Output: - "Please check for each possible case, the program is working fine"

Engineering

Computer Science

Extend the ItemToPurchase class to contain a new attribute. item_description (string) - Set to "none" in default constructor Implement the following method for the ItemToPurchase class. print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter. Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps. Parameterized constructor which takes the customer name and date as parameters Attributes customer_name (string) - Initialized in default constructor to "none" current_date (string) - Initialized in default constructor to "January 1, 2016" cart_items (list) Methods add_item() Adds an item to cart_items list. Has parameter ItemToPurchase. Does not return anything. remove_item() Removes item from cart_items list. Has a string (an item's name) parameter. Does not return anything. If item name cannot be found, output this message: Item not found in cart. Nothing removed. modify_item() Modifies an item's quantity. Has parameter ItemToPurchase. Does not return anything. If item can be found (by name) in cart, modify item in cart. If item cannot be found (by name) in cart, output this message: Item not found in cart. Nothing modified. get_num_items_in_cart() (2 pts) Returns quantity of all items in cart. Has no parameters. get_cost_of_cart() (2 pts) Determines and returns the total cost of items in cart. Has no parameters. print_total() Outputs total of objects in cart. If cart is empty, output this message: SHOPPING CART IS EMPTY print_descriptions() Outputs each item's description. In main section of your code, prompt the user for a customer's name and today's date. Output the name and date. Create an object of type ShoppingCart. In the main section of your code, implement the print_menu() function. print_menu() has a ShoppingCart parameter, and outputs a menu of options to manipulate the shopping cart. Each option is represented by a single character. Build and output the menu within the function. If the an invalid character is entered, continue to prompt for a valid choice. Hint: Implement Quit before implementing other options. Call print_menu() in the main() function. Continue to execute the menu until the user enters q to Quit. Implement Output shopping cart menu option. Implement Add item to cart menu option. Implement remove item menu option. Implement Change item quantity menu option. Hint: Make new ItemToPurchase object before using ModifyItem() method.