Question

Zybooks 11.12 LAB*: Program: Online shopping cart (continued) Python 3 is the code needed and this...

Zybooks 11.12 LAB*: Program: Online shopping cart (continued)

Python 3 is the code needed and this is in Zybooks

Existing Code

# Type code for classes here
class ItemToPurchase:
def __init__(self, item_name="none", item_price=0, item_quantity=0):
self.item_name = item_name
self.item_price = item_price
self.item_quantity = item_quantity

# def __mul__(self):
# print_item_cost = (self.item_quantity * self.item_price)
# return '{} {} @ ${} = ${}' .format(self_item_name, self.item_quantity, self.item_price, print_item_cost)

def print_item_cost(self):
self.print_cost = (self.item_quantity * self.item_price)
print(('{} {} @ ${} = ${}') .format(self.item_name, self.item_quantity, self.item_price, self.print_cost))


def main():
print('Item 1')
name = input('Enter the item name:\n')
price = int(input('Enter the item price:\n'))
quantity = int(input('Enter the item quantity:\n\n'))
item1 = ItemToPurchase(name, price, quantity)

print('Item 2')
name = input('Enter the item name:\n')
price = int(input('Enter the item price:\n'))
quantity = int(input('Enter the item quantity:\n\n'))
item2 = ItemToPurchase(name, price, quantity)

print('TOTAL COST')
item1.print_item_cost()
item2.print_item_cost()
print('\nTotal: $%s' % (item1.print_cost + item2.print_cost))

if __name__ == "__main__":

main()

Zybooks 11.12 LAB*: Program: Online shopping cart (continued)

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 description, price, and/or quantity. Has parameter ItemToPurchase. Does not return anything.

If item can be found (by name) in cart, check if parameter has default values for description, price, and quantity. If not, 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) 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

Code that I have which has errors: What am I missing?

# Type code for classes here
class ItemToPurchase:
    def __init__(self, item_name="none", item_price=0, item_quantity=0,item_description="none"):
        self.item_name = item_name
        self.item_price = item_price
        self.item_quantity = item_quantity
        # item_description attribute to store item's description, initialize it to "none"
        self.item_description = item_description

# def __mul__(self):
# print_item_cost = (self.item_quantity * self.item_price)
# return '{} {} @ ${} = ${}' .format(self_item_name, self.item_quantity, self.item_price, print_item_cost)

    def print_item_cost(self):
        self.print_cost = (self.item_quantity * self.item_price)
        print(('{} {} @ ${} = ${}') .format(self.item_name, self.item_quantity, self.item_price, self.print_cost))
    # prints item name followed by its description
    def print_item_description(self):
        print(self.item_name,end=": ")
        print(self.item_description)

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, string):

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

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

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

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

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

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

    def remove_item(self):

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

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

        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('\nItem not found in cart. Nothing removed.')

    def modify_item(self):

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

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

        for item in self.cart_items:

            if(item.item_name == name):

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

                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():

        total_cost = get_cost_of_cart()

        if (total_cost == 0):

            print('SHOPPING CART IS EMPTY')

        else:

            output_cart()

    def print_descriptions(self):

        print('\nOUTPUT 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')

        tc = 0

        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')

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

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

def print_menu(ShoppingCart):

    customer_Cart = newCart

    string=''

    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 = ''

    while(command != 'q'):

        string=''

        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(string)

        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()

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

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

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

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

newCart = ShoppingCart(customer_name, current_date)

print_menu(newCart)
0 0
Add a comment Improve this question Transcribed image text
Answer #1

Screenshot

Program

# Create a class ItemToPurchase
class ItemToPurchase:
    #constructor
    def __init__(self, item_name="none", item_price=0, item_quantity=0,item_description="none"):
        self.item_name = item_name
        self.item_price = item_price
        self.item_quantity = item_quantity
        # item_description attribute to store item's description, initialize it to "none"
        self.item_description = item_description
    #Print cost of an item
    def print_item_cost(self):
        self.print_cost = (self.item_quantity * self.item_price)
        print(('{} {} @ ${} = ${}') .format(self.item_name,self.item_quantity, self.item_price, self.print_cost))
    # prints item name followed by its description
    def print_item_description(self):
        print(self.item_name,end=": ")
        print(self.item_description)

#Create a class ShoppingCart
class ShoppingCart:
    #Constructor
    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
    #Add an item into cart
    def add_item(self, string):
        print('\nADD ITEM TO CART', end='\n')
        item_name = str(input('Enter the item name:'))
        item_description = str(input('\nEnter the item description:'))
        item_price = float(input('\nEnter the item price:'))
        item_quantity = int(input('\nEnter the item quantity:\n'))
        self.cart_items.append(ItemToPurchase(item_name, item_price, item_quantity, item_description))
    #Remove an item from the cart
    def remove_item(self):
        print('REMOVE ITEM FROM CART', end='\n')
        string = str(input('Enter name of item to remove:'))
        i = 0
        for item in self.cart_items:
            if(item.item_name.capitalize() == string.capitalize()):             
                del self.cart_items[i]
                i += 1
                flag=True
                break
            else:
                flag=False
        if(flag==False):
            print('\nItem not found in cart. Nothing removed.')
    #modify the cart
    def modify_item(self):
        print('\nCHANGE ITEM QUANTITY', end='\n')
        name = str(input('Enter the item name:'))     
        for item in self.cart_items:
            if(item.item_name.capitalize() == name.capitalize()):
                quantity = int(input('Enter the new quantity:'))
                item.item_quantity = quantity
                flag=True
                break
            else:
                flag=False
        if(flag==False):
            print('Item not found in cart. Nothing modified')
     #Get number of items in the cart
    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
    #Get total cost of the cart 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
    #Print total cart details
    def print_total():
        total_cost = get_cost_of_cart()
        if (total_cost == 0):
            print('SHOPPING CART IS EMPTY')
        else:
            output_cart()
    #Get details of items in the cart
    def print_descriptions(self):
        if(len(self.cart_items)==0):
            print('SHOPPING CART IS EMPTY')
        else:
            print('\nOUTPUT 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:
                item.print_item_description()
    #Out put cart
    def output_cart(self):
        if(len(self.cart_items)==0):
            print('SHOPPING CART IS EMPTY')
        else:
            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')
            tc = 0
            for item in self.cart_items:
                item.print_item_cost()
                tc += (item.item_quantity * item.item_price)
            print('\nTotal: ${}'.format(tc), end='\n')
#Method to print user menu
def print_menu(ShoppingCart):
    customer_Cart = newCart
    string=''
    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 = ''
    while(command != 'q'):
        string=''
        print(menu, end='\n')
        command = input('Choose an option:\n')
        #error check
        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(string)
        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()
#Prompt for customer name and purchase date
customer_name = str(input('Enter customer\'s name:'))
current_date = str(input('\nEnter today\'s date:\n'))
print('\nCustomer name:', customer_name, end='\n')
print('Today\'s date:', current_date, end='\n')
newCart = ShoppingCart(customer_name, current_date)
print_menu(newCart)

------------------------------------------------------------------

Output

Enter customer's name:Tiffany Kerg

Enter today's date:
July, 05,2019

Customer name: Tiffany Kerg
Today's date: July, 05,2019

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:
o
SHOPPING CART IS EMPTY

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:
i
SHOPPING CART IS EMPTY

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:
a

ADD ITEM TO CART
Enter the item name:Chocolate

Enter the item description:Strawberry filled

Enter the item price:4.5

Enter the item quantity:
5

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:
a

ADD ITEM TO CART
Enter the item name:Buiscuit

Enter the item description:Cocco filled

Enter the item price:6.45

Enter the item quantity:
10

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:
o
OUTPUT SHOPPING CART
Tiffany Kerg's Shopping Cart - July, 05,2019
Number of Items: 15

Chocolate 5 @ $4.5 = $22.5
Buiscuit 10 @ $6.45 = $64.5

Total: $87.0

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:
i

OUTPUT ITEMS' DESCRIPTIONS
Tiffany Kerg's Shopping Cart - July, 05,2019

Item Descriptions
Chocolate: Strawberry filled
Buiscuit: Cocco filled

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:
c

CHANGE ITEM QUANTITY
Enter the item name:chocolate
Enter the new quantity:10

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:
o
OUTPUT SHOPPING CART
Tiffany Kerg's Shopping Cart - July, 05,2019
Number of Items: 20

Chocolate 10 @ $4.5 = $45.0
Buiscuit 10 @ $6.45 = $64.5

Total: $109.5

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:
i

OUTPUT ITEMS' DESCRIPTIONS
Tiffany Kerg's Shopping Cart - July, 05,2019

Item Descriptions
Chocolate: Strawberry filled
Buiscuit: Cocco filled

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:
r
REMOVE ITEM FROM CART
Enter name of item to remove:buiscuit

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:
o
OUTPUT SHOPPING CART
Tiffany Kerg's Shopping Cart - July, 05,2019
Number of Items: 10

Buiscuit 10 @ $6.45 = $64.5

Total: $64.5

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:
i

OUTPUT ITEMS' DESCRIPTIONS
Tiffany Kerg's Shopping Cart - July, 05,2019

Item Descriptions
Buiscuit: Cocco filled

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:
q

-----------------------------------------------------

Note:-

What error are you getting.

I changed the display part of the shoppng cart and add conditions and avoid case sensitivities.

If you have any doubts, let me know

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  • 4.18 Ch 7 Program: Online shopping cart (continued) (C++) This program extends the earlier "Online shopping...

    4.18 Ch 7 Program: Online shopping cart (continued) (C++) This program extends the earlier "Online shopping cart" program. (solution from previous lab assignment is provided in Canvas). (1) Extend the ItemToPurchase class per the following specifications: Parameterized constructor to assign item name, item description, item price, and item quantity (default values of 0). (1 pt) Public member functions SetDescription() mutator & GetDescription() accessor (2 pts) PrintItemCost() - Outputs the item name followed by the quantity, price, and subtotal PrintItemDescription() -...

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

    Ch 7 Program: Online shopping cart (continued) (Java)This program extends the earlier "Online shopping cart" program. (Consider first saving your earlier program).(1) Extend the ItemToPurchase class per the following specifications:Private fieldsstring itemDescription - Initialized in default constructor to "none"Parameterized constructor to assign item name, item description, item price, and item quantity (default values of 0). (1 pt)Public member methodssetDescription() mutator & getDescription() accessor (2 pts)printItemCost() - Outputs the item name followed by the quantity, price, and subtotalprintItemDescription() - Outputs the...

  • Python3 programming help needed LAB*: Program: Online shopping cart (continued) Need the below code edited to...

    Python3 programming help needed LAB*: Program: Online shopping cart (continued) Need the below code edited to run properly for the lab.. class ItemPurchase:     def __init__(self, nameitem='none', item_prc=0, item_quntity=0, item_descrp = 'none'):         self.nameitem = nameitem         self.item_prc = item_prc         self.item_quntity = item_quntity         self.item_descrp = item_descrp     def print_itemvaluecost(self):              string = '{} {} @ ${} = ${}'.format(self.nameitem, self.item_quntity, self.item_prc(self.item_quntity * self.item_prc))         valuecost = self.item_quntity * self.item_prc         return string, valuecost     def print_itemdescription(self):         string...

  • Online shopping cart (continued) (Java) Hello, I need help with Java to figure this out. In...

    Online shopping cart (continued) (Java) Hello, I need help with Java to figure this out. In my Shopping Cart Manager Class (Bottom Code), I get "Resource leak: 'sc' is never closed." I have tried multiple things and cannot figure it out. Thank you. Online shopping cart (continued) (Java) Hello, I need help with Java to figure this out. In my Shopping Cart Manager Class (Bottom Code), I get "Resource leak: 'sc' is never closed." I have tried multiple things and...

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