#== abstract Ride Factory
class RideFactoryInterface:
    def getRide(category):pass

#== concrete Ride Factory
class Car(RideFactoryInterface):
    @staticmethod
    def getRide(category):
        if category == "premium":
            return CarPremiumRide()
        if category == "delux":
            return CarDeluxRide()
        assert 0, "Couldn't find car " +category

class Bike(RideFactoryInterface):
    @staticmethod
    def getRide(category):
        if category == "premium":
            return BikePremiumRide()
        if category == "delux":
            return BikeDeluxRide()
        assert 0, "Couldn't find Bike " +category