Subject :Object Oriented Software Development

Pls help me with my Python task, here are the question

These are the code, just use these code and mofidy regarding all requirement above using simple python code

class VendingMachine:

total_revenue = 0 # Total revenue of all vending machines in the system

snack_prices = {"candy": 2.00, "soda": 1.50, "chips": 3.00, "cookies": 3.50}

# Instance attributes

def __init__(self, inventory, serial, days_until_maintenance):

self.inventory = inventory # dictionary with {: } as key-value pairs. Possible snacks: candy, soda, chips, cookies. Keys written in lowercase.

self.revenue = 0 # Initially, when an instance of the vending machine is created, the revenue is 0 and it's updated with each sale.

self.serial = serial

self.days_until_maintenance = days_until_maintenance

# Method that displays an interactive menu to process a sale.

# Displays the options, gets user input to select the snack, and calls

# another method to process the sale.

def sales_menu(self):

# The user has the option to buy several types of snacks

# so the program is repeated if the user indicates that he/she

# would like to buy another snack

while True:

greetings = " Welcome! I have: "

request = " Please enter the number of the item: "

# Print a welcome message with the snacks available

print(greetings)

i = 1

for snack in self.inventory:

print("(" + str(i) + ") " + snack.capitalize())

i += 1

# Get the user input (option selected)

cust_input = int(input(request))

# Repeat if the input doesn't meet the requirements

while cust_input len(self.inventory):

print("Please enter a number from 1 to", len(self.inventory))

# Get the user input (option selected)

cust_input = int(input(request))

# Display appropriate message

self.process_sale(list(self.inventory.keys())[cust_input - 1].lower())

answer = int(input(" Would you like to buy another snack? Enter 1 for YES and 0 for NO: "))

# If the customer does not wish to buy another snack

if not answer:

break

# Method that processes the sale by asking the user how many snacks of that type

# he/she would like to buy and calls another method to opdate the inventory

def process_sale(self, option): # option must be in lowercase

print(" You selected: %s" % option.capitalize())

if self.inventory[option] > 0:

# Display current snack inventory and product

print("Great! I currently have %d %s in my inventory " % (self.inventory[option], option))

# Ask for the number of snacks

num_items = int(input("How many %s would you like to buy? " % option))

# Handle cases where user might enter a negative number or zero

while num_items

print("Please enter a positive integer")

num_items = int(input(" How many %s would you like to buy? " % option))

# Update inventory if there are enough snacks available

if num_items

self.remove_from_inventory(option, num_items)

# Update the machine's revenue

total = self.update_revenue(option, num_items)

print("That would be: $ " + str(total))

# Display a message confirming the purchase and current inventory

print(" Thank you for your purchase!")

print("Now I have %d %s and my revenue is $%d" % (self.inventory[option], option, self.revenue))

else:

print("I don't have so many %s. Sorry! :(" % option)

else:

print("I don't have any more %s. Sorry! :(" % option)

# Method that updates the vending machine's (instance) inventory by

# decrementing the availability of the snack chosen.

def remove_from_inventory(self, option, num_items):

self.inventory[option] -= num_items

# Update the revenue of the instance of VendingMachine

# and update the class attribute total revenue.

def update_revenue(self, option, num_items):

# Find price of the snack

price = self.find_snack_price(option)

# Update Instance and class

self.revenue += num_items * price

VendingMachine.total_revenue += num_items * price

return num_items * price

# Find the price of the snack selected in the class attribute

# and return it

def find_snack_price(self, snack):

return VendingMachine.snack_prices[snack]

# Method that prints a message with the total revenue of the instance of VendingMachine

def display_revenue(self):

print("The total revenue of this vending machine is:", self.revenue)

# Subclasses

#class HospitalVendingMachine(VendingMachine):

# Complete the class

#class SchoolVendingMachine(VendingMachine):

floor_machine = VendingMachine({"candy": 36, "soda": 15, "chips": 40, "cookies": 120}, "011423424", 24)

floor_machine.sales_menu()

#hospital_machine = HospitalVendingMachine({"candy": 32, "soda": 50, "chips": 45, "cookies": 80}, "03223424", 15)

# hospital_machine.sales_menu()

#school_machine = SchoolVendingMachine({"candy": 36, "soda": 15, "chips": 40, "cookies": 120}, "0534424", 2)

# school_machine.sales_menu()

Vending machine project Task 1: Customize the behavior of the VendingMachine class with method inheritance and method overriding. To do this, you will define two subclasses: HospitalVendingMachine and SchoolVendingMachine. They will inherit from VendingMachine Requirements for both types of vending machines: The subclasses must have a custom greeting message for the user. This message should be displayed before the list of available products. The code must override the sales menu method in these two subclasses. They should print their custom message (shown below) before calling the sales menu method of the VendingMachine superclass. custom messages: For SchoolVendingMachine: Welcome to our School Vending Machine We hope you have a great day full of learning! For HospitalVendingMachine: Welcome to our Hospital Vending Machine We hope you are feeling better today! The subclass should have a class attribute snack prices. This attribute should replace the value defined in the superclass. You can customize the prices (values) to your liking but please keep the structure of the original dictionary. Override the find snack price method in both subclasses to make them use the class attribute that corresponds to the subclass. Requirements for SchoolVendingMachine: Define a class attribute called student debt (a dictionary with students' names as the keys and their corresponding debt as values). Define a method print student debt that takes the name of the student as argument and prints the value of the debt. Requirements for HospitalVendingMachine: Define a method called print days until maintenance that prints a string with the number of days remaining until the next scheduled maintenance (this is an instance attribute of the superclass)