def check_backpack(self):
"""Will display the cans contained in purchased_cans list in backpack"""
if len(self.backpack.purchased_cans) == 0:
user_interface.output_text("You have no cans in your backpack")
else:
for can in self.backpack.purchased_cans:
user_interface.output_text(can.name)
def gather_change_from_register(self, change_value):
change_list = []
while change_value > 0:
if change_value >= 0.25 and self.register_has_coin("quarter"):
change_list.append(self.get_coin_from_register("quarter"))
change_value -= 0.25
elif change_value >= 0.10 and self.register_has_coin("dime"):
change_list.append(self.get_coin_from_register("dime"))
change_value -= 0.10
elif change_value >= 0.05 and self.register_has_coin("nickel"):
change_list.append(self.get_coin_from_register("nickel"))
change_value -= 0.05
elif change_value >= 0.01 and self.register_has_coin("penny"):
change_list.append(self.get_coin_from_register("penny"))
change_value -= 0.01
elif change_value == 0:
break
else:
user_interface.output_text(
"Error: Machine does not have enough change to complete transaction"
)
self.deposit_coins_into_register(change_list)
change_list = None
break
change_value = round(change_value, 2)
return change_list
def calculate_transaction(self, customer_payment, selected_soda, customer):
total_payment_value = self.calculate_coin_value(customer_payment)
if total_payment_value < selected_soda.price:
change_value = self.determine_change_value(total_payment_value,
selected_soda.price)
customer_change = self.gather_change_from_register(change_value)
if customer_change is None:
user_interface.output_text(
'Dispensing ${total_payment_value} back to customer')
customer.add_coins_to_wallet(customer_payment)
self.return_inventory(selected_soda)
else:
self.deposit_coins_into_register(customer_payment)
customer.add_coins_to_wallet(customer_change)
customer.add_can_to_backpack(selected_soda)
user_interface.end_message(selected_soda, change_value)
elif total_payment_value == selected_soda.price:
self.deposit_coins_into_register(customer_payment)
customer.add_can_to_backpack(selected_soda)
user_interface.end_message(selected_soda, 0)
else:
user_interface.output_text(
"You do not have enough money to purchase this item, returning payment"
)
customer.add_coins_to_wallet(customer_payment)
self.return_inventory(selected_soda)
def run_transaction(self, customer):
selected_soda_name = user_interface.soda_selection(self.inventory)
selected_soda = self.get_inventory_soda(selected_soda_name)
customer_payment = customer.gather_coins_from_wallet(selected_soda)
self.calculate_transaction(customer_payment, selected_soda, customer)
user_interface.output_text("Transaction complete")
def gather_coins_from_wallet(self, selected_soda):
"""Method allowing user to choose coins from wallet for payment"""
will_proceed = True
customer_payment = []
user_interface.output_text("Continue to add coins until you are ready to insert them into the machine")
while will_proceed:
user_interface.display_can_cost(selected_soda)
user_interface.display_payment_value(customer_payment)
coin_name = user_interface.coin_selection()
if coin_name == "Done":
break
payment_coin = self.get_wallet_coin(coin_name)
if payment_coin is not None:
customer_payment.append(payment_coin)
else:
user_interface.output_text("You do not have any of those coins, try again")
return customer_payment
