Python-сообщество

 class PizzaStorage:
    def __init__(self):
        self.count = 10
    def minus(self, count):
        self.count = self.count - count
class Customer:
    def __init__(self, name, storage):
        self.name = name
        self.storage = storage
    def eat(self):
        self.storage.minus(1)
class FatCustomer(Customer):
    def __init__(self, name, storage, logger):
        super().__init__(name, storage)
        self.logger = logger
    def eat(self):
        self.storage.minus(1)
        self.logger.write_to_log('fat eat')
    def sayThanks(self):
        print('thanks!')
class Logger:
    def write_to_log(self, text):
        print('LOG: ', text)
pizzaStorage = PizzaStorage()
customer = Customer('bill', pizzaStorage)
fatCustomer = FatCustomer('bob', pizzaStorage,  Logger())
customer.eat()
print(pizzaStorage.count)
fatCustomer.eat()
print(pizzaStorage.count)