Question

This program extends the earlier "Online shopping cart" program. (Consider first saving your earlier program).

(1) Extend the ItemToPurchase class to contain a new attribute. (2 pts)

• 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.

Ex. of print_item_description() output:

Bottled Water: Deer Park, 12 oz.

(2) 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 (2 pts)
• 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.

Ex. of print_total() output:

John Doe's Shopping Cart - February 1, 2016
Number of Items: 8

Nike Romaleos 2 @ $189 = $378
Chocolate Chips 5 @ $3 = $15
Powerbeats 2 Headphones 1 @ $128 = $128

Total: $521

Ex. of print_descriptions() output:

John Doe's Shopping Cart - February 1, 2016

Item Descriptions
Nike Romaleos: Volt color, Weightlifting shoes
Chocolate Chips: Semi-sweet
Powerbeats 2 Headphones: Bluetooth headphones

(3) 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. (1 pt)

Ex.

Enter customer's name:
John Doe
Enter today's date:
February 1, 2016

Customer name: John Doe
Today's date: February 1, 2016

(4) 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. (3 pts)

Ex:

MENU
a - Add item to cart
r - Remove item from cart
c - Change item quantity
i - Output items' descriptions
o - Output shopping cart
q - Quit

Choose an option:

(5) Implement Output shopping cart menu option. (3 pts)

Ex:

OUTPUT SHOPPING CART
John Doe's Shopping Cart - February 1, 2016
Number of Items: 8

Nike Romaleos 2 @ $189 = $378
Chocolate Chips 5 @ $3 = $15
Powerbeats 2 Headphones 1 @ $128 = $128

Total: $521

(6) Implement Output item's description menu option. (2 pts)

Ex.

OUTPUT ITEMS' DESCRIPTIONS
John Doe's Shopping Cart - February 1, 2016

Item Descriptions
Nike Romaleos: Volt color, Weightlifting shoes
Chocolate Chips: Semi-sweet
Powerbeats 2 Headphones: Bluetooth headphones

(7) Implement Add item to cart menu option. (3 pts)

Ex:

ADD ITEM TO CART
Enter the item name:
Nike Romaleos
Enter the item description:
Volt color, Weightlifting shoes
Enter the item price:
189
Enter the item quantity:
2

(8) Implement remove item menu option. (4 pts)

Ex:

REMOVE ITEM FROM CART
Enter 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)

Ex:

CHANGE ITEM QUANTITY
Enter the item name:
Nike Romaleos
Enter the new quantity:
3.

Type in Python please.

Answer 1

#Online Shopping Cart -python 3

class Items To Purchase:

def __init__(self, name = "none", price = 0, quantity 0):

self.name = name

self.price = price

self.quantity = quantity

def print_item_cost(self):

print( self.name + " " +str(self .price) + " @ $" + str(self.price) " = $ " + str(self.price *self.quantity))

def main():

print("Item 1" + "\n")

item1 = ItemToPurchase()

item1.name = input("Enter name: + "\n")

item1.price = int(input("Enter the item price:" + "\n"))

item1.quantity = int(input("Enter the item quantity:" + "\n"))

print("Item 2" + "\n")

item2 = ItemToPurchase()

item2.name = input("Enter the item name:" + "\n")

item2.price = int(input("Enter the = item price:" + "\n"))

item2.quantity = int(input("Enter the item quantity:" + "\n"))

print("TOTAL COST" + "\n")

item1.print_item_cost() item2.print_item_cost()

print('\n'+'Total: $' + str(((item1.price *item1.quantity) + (item2 .price * item2.quantity))))

def remove_from_cart(request, item):

cart = get_shopping_cart(request)

cart.remove_item(int(item))

update_shopping_cart(request, cart)

cart = get_shopping_cart(request)

ctx = {'cart': cart}

def update_shopping_cart(request, cart):

request.session['cart'] = cart

main()