classPhone

class Item:
    def __init__(self, name: str, price: float, quantity=0):

        assert price >= 0, f"Price {price} is not greater than zero!"
        assert quantity >= 0, f"Quantity {quantity} is not greater than zero!"

        self.name = name
        self.price = price
        self.quantity = quantity

    def calculateTotalPrice(self):
        return self.price * self.quantity


item1 = Item("Phone", 100, 1)
item2 = Item("Laptop", 1000, 3)

print(item1.calculateTotalPrice())
print(item2.calculateTotalPrice())