from book import Book from vehicle import Vehicle my_vehicle_book = Book() car1 = Vehicle(brand="VW", model="Golf", km_done=100, service_date="10.07.2016") my_vehicle_book.add(car1) car2 = Vehicle(brand="Audi", model="A4", km_done=70, service_date="13.06.2016") my_vehicle_book.add(car2) my_vehicle_book.drucken() print "------------------" car1.modif_km(678) car1.display() car2.edit_service("11.03.2015") car2.display() my_vehicle_book.save_txt()