Magical Virtual Vending Machine

About

• College: Blackpool and the Flyde College
• Subject: Object-Oriented Programming
• Assessment Number: 2
• Author: Christopher Robbertse

Program Requirements

• Python3: The program WILL NOT WORK with older versions of Python.

UML

Use Case Diagrams

• [UML/Use Case Diagrams/VendingMachine Simplified.png](UML/Use Case Diagrams/VendingMachine Simplified.png)

Activity Diagrams

• [UML/Activity Diagram/Welcome.png](UML/Activity Diagram/Welcome.png)
• [UML/Activity Diagram/DisplayProducts.png](UML/Activity Diagram/DisplayProducts.png)
• [UML/Activity Diagram/SelectProduct.png](UML/Activity Diagram/SelectProduct.png)
• [UML/Activity Diagram/PayForProduct.png](UML/Activity Diagram/PayForProduct.png)

Class Diagrams

• [UML/Class Diagrams/Coins.png](UML/Class Diagrams/Coins.png)
• [UML/Class Diagrams/Classes.png](UML/Class Diagrams/Classes.png)

Assessment Technical Requirements

• Abstract parent class: Coin
• Child classes: OnePenny, TwoPenny, etc.
• Abstract method: Coin.__init__.
• Static method: Coin.create_coin_class.
• Property methods:
  • PurchaseHandler.remaining_to_pay
  • PurchaseHandler.sum
• Class methods: VendingMachine.display_menu and more.
• Class attribute: CoinFactory.COIN_VALUES.
• Instance attributes: product.name
  • product.price
  • product_inventory.products
  • and more
• Polymorphism: Coin's child classes override the value in its constructor.
• Dictionaries: ProductInventory.products and CoinPot.coins
• List: CoinPot.coins[coin_value]
• Importation of modules:
  • import ABC (abstract class) and abstractmethod in coins.py
  • import CoinFactory in purchase_handler.py
  • import Product and ProductInventory in main.py
  • import PurchaseHandler in main.py
• Constructors:
  • VendingMachine.__init__(self, welcome_message, product_inventory)
  • PurchaseHandler.__init__(self, product)
  • CoinPot.__init__(self)
  • Product.__init__(self, name, price)
  • ProductInvetory.__init__(self, products)
  • and more
• Super Constructors:
  • FivePence, super().__init__(0.05)
  • TenPence, super().__init__(0.10)
  • etc.
• Doc strings used under every class, and comments general comments throughout.
• Validation and error checking:
  • VendingMachine.get_product_id_from_customer
  • PurchaseHandler.get_coin_value_from_customer