class Gadget: def __init__(self, name, price, brand): self.name = self._validate_name(name) self.price = self._validate_price(price) self.brand = brand def _validate_name(self, name): if len(name) > 15: raise ValueError("name cannot exceed 15 characters.") return name def _validate_price(self, price): if price < 0: raise ValueError("Price cannot be negative.") return price if __name__ == "__main__
