Python Property

property.py

class Pizza:
    def __init__(self, toppings):
        self.toppings = toppings
        self._pineapple_allowed = False

    @property
    def pineapple_allowed(self):
        return self._pineapple_allowed

    @pineapple_allowed.setter
    def pineapple_allowed(self, value):
        if value:
            password = input("Enter the password: ")
            if password == "123456":
                self._pineapple_allowed = value
        else:
            raise ValueError("Alert! Intruder!")

pizza = Pizza(["cheese", "tomato"])
print(pizza.pineapple_allowed)
pizza.pineapple_allowed = True
print(pizza.pineapple_allowed)