from datetime import datetime as dt


class Car:
    def __init__(self, **kwargs) -> None:
        self.make = kwargs.get("make")
        self.model = kwargs.get("model")
        self.year = kwargs.get("year")

    def display_info(self):
        return (x for x in (self.make, self.model, self.year) if x is not None)

    def calculate_age(self):
        if self.year is None:
            return "Неизвестно"
        return dt.today().year - self.year


cars = (
    Car(make="Ваз", model="Нива", year=2000),
    Car(make="Mitsubishi", model="Colt", year=2007),
    Car(make="Газ", model="Вогла"),
    Car(make="БРДМ", year=1993),
)

for car in cars:
    print(*car.display_info())
    print("возраст тс:", car.calculate_age())
    print()