5:00 PM – Python Object Oriented Programming – Sebastian

Today We Did

1. Started and quickly finished GroceryShoppingCart (great job!)
2.  Brief introduction to OOP, sneak peak of the following:
   Classes, Attributes, Methods, Constructors, and Objects
3. In case you need anything, feel free to email me at sebastian@ayclogic.com

Homework

1. Name your homework APR11_robux_hw, please submit by next Monday.
2. Homework: Recall your old RobuxShoppingCart assignment:

   menu = """
   What do you want to do: 
   1. Buy hat 100 Robux
   2. Buy hair 150 Robux
   3. VIP Server 500 Robux
   4. Add more Robux
   5. Exit
   Enter your selection: """
   
   shopping_cart = []
   robux = 300
   
   def handle_transaction(price, item_name):
       global robux
       if robux < price:
           print(f"You only have {robux} robux remaining. Therefore you cannot purchase {item_name} for {price} robux.")
       else:
           robux -= price
           print(f"You purchased a {item_name}. You have {robux} robux remaining.")
           shopping_cart.append(item_name)
   
   print(f"Welcome to Robux Bank, you have {robux} robux in the beginning.")
   
   while True:
       selection = input(menu)
       if selection == "5":
           break
       elif selection not in("1","2","3","4","5"):
           print("invalid selection")
       elif selection == "1":
           handle_transaction(100, "Hat")
       elif selection == "2":
           handle_transaction(150, "Hair")
       elif selection == "3":
           handle_transaction(500, "VIP Server")
       elif selection == "4":
           credit_card_number = input("Enter your Credit Card number: ")
           if credit_card_number == "ABCD1234":
               robux += 200
               print(f"Thank you for purchasing 200 Robux. You now have {robux} robux remaining.")
           else:
               print("You have entered an invalid credit card number")
   
   
   print("\nYou have purchased the following items:")
   count = 1
   for item in shopping_cart:
       print(f"{count}. {item.title()}")
       count += 1
   
   print(f"Your remaining Robux balance is {robux} Robux.")

   Try your best to recreate this with two dictionaries:

   – input_name
   – selection_price

   These should map the selection to the name (hat, hair, VIP server, add more robux), and map the selection to the price (100, 150, 500, 200).