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+--- Thread: Vending Machine Project - OOP Issues (/thread-25602.html)
Vending Machine Project - OOP Issues - wiggles - Apr-05-2020
Hi,
I have been working on a vending machine project which is outlined below.
After selecting 'b' in the first menu, I am having trouble with comparing the selected item cost with the total amount within the vending machine (self.total). I have worked out how to reference the product selected via a dictionary (VendingMachine.order_product), however this only works as a string and I cannot subtract the the value of the product (product.price), from the self.total - This can be seen at self.total -= {product.price} in VendingMachine.order_product
Once the order has been completed, and the product received, I want to subtract 1 product from the item.stock which can be selected in the first menu under option c - 'Transactions'. If there are none left in stock, I want to pull the item out of the dict via the .remove method I am assuming.
I don't have any friends who code, so its been tough getting this far! Any feedback would be appreciated!
Apologies if I did not explain it very well.
accepted_coins= [0.05, 0.10, 0.20, 0.50, 1.00, 2.00]
options = ["a", "b", "c"]
class Item:
def __init__(self, code, name, price, amount):
self.code = code
self.name = name
self.price = price
self.amount = amount
class VendingMachine:
print("Machine booting up")
def __init__(self):
self.total = 0.00
self.items = {
'1' : Item(1, "Tea", 0.50, 10),
'2' : Item(2, "Coffee", 1.00, 10),
"3" : Item(3, "Coke", 1.50, 6),
"4" : Item(4, "Orange Juice", 1.00, 5)
}
def select_option(self):
print(" ")
print("Welcome to My Vending Machine")
print ("{} Display Products".format(options[0]))
print ("{} Choose Product".format(options[1]))
print ("{} Transactions".format(options[2]))
option = input("Please select option: ")
if option == options[0]:
VendingMachine.display_items(self)
VendingMachine.select_option(self)
elif option == options[1]:
VendingMachine.order_product(self)
elif option == options[2]:
VendingMachine.display_items(self)
elif option not in (options):
print("This option is not recongised")
VendingMachine.select_option(self)
def display_items(self):
print (" ")
print ("All items are currently stocked and available")
print ("Display items here")
def order_product(self):
choice = (input("Please insert the item code: "))
product = self.items[choice]
print (f"You have selected {product.name} for ${product.price}. Currently {product.amount} in stock")
coin = float(input("Please insert your coins: "))
if float(coin) not in (accepted_coins):
print ("The Vending Machine accepts only {}" . format(accepted_coins), end = ' ')
else:
self.total += coin
print (f" You have {self.total} in the Machine. You need ${product.price} for {product.name}")
print("[1] - Confirm")
print("[2] - Change Order")
print("[2] - Cancel")
confirm = float(input('Currently there is a total of ${:.2f} in the Machine. Confirm Order?: '.format(self.total)))
if float(confirm) == 1:
self.total -= Items.price
print(f'Please take your {product.name} for a total of ${product.price}. Currently there is a total of ${self.total} left in the Vending Machine')
elif float(confirm) == 2:
print ("Please select again")
self.total = 0.00
VendingMachine.select_option(self)
elif float(confirm) == 3:
print("Please take your money, and have a nice day!")
self.total = 0.00
VendingMachine.order_product(self)
elif float(confirm) < 3:
print("Incorrect Answer - Please take your money and try again")
self.total = 0.00
VendingMachine.order_product(self)
def main():
vending_machine = VendingMachine()
vending_machine.select_option()
return 0
if __name__ == "__main__":
import sys
sys.exit(main())
RE: Vending Machine Project - - buran - Apr-05-2020
please fix the indentation of the code
RE: Vending Machine Project - - wiggles - Apr-05-2020
(Apr-05-2020, 05:10 AM)buran Wrote: please fix the indentation of the code
Sorry Buran, I have updated now