# Vehicle.py
class Vehicle(object):
    """Document String: Define a Vehicle class"""
 
    def __init__(self, brand, year):
        self._brand = brand;
	self._year = year;
 
    def __str__(self):
        return self._brand+' '+str(self._year)

    def info(self):
        print('Class: %s, %s, %d' % (self.__class__, self._brand, self._year))
		

# Car.py
from Vehicle import Vehicle;

class Car(Vehicle):
	"""Define class Car, which is inherit from class Vehicle"""
	def __init__(self, brand, year, model):
	    """Construct"""
	    super(Car, self).__init__(brand, year);
	    #Vehicle.__init__(self, brand, year);
	    self.__model = model;

        @property
        def model(self):
            return self.__model

        @model.setter
        def model(self, value):
            self.__model = value

        @model.deleter
        def model(self):
            del self.__model

        # override __str__ in Vehicle
	def __str__(self):
            #return super(Car, self).__str__() + " " + self.model
            return Vehicle.__str__(self) + " " + self.model
		

from Vehicle import Vehicle;
from Car import Car;

def main():
        vehicles = [Vehicle("Buick", 1998), Car("Lincoln", 1998, "Continental")]

	# Buick 1998 Class: <class 'Vehicle.Vehicle'>, Buick, 1998
	# Lincoln 1998 Continental Class: <class 'Car.Car'>, Lincoln, 1998
        for v in vehicles:
            print(v)
            v.info()

if __name__ == '__main__':
	main();