Design Patterns Builder in Python

class Director:
    __builder = none
    
    def setBuilder(self, builder):
        self.__builder = builder
   
    def getCar(self):
        car = Car()
      
      # First goes the body
        body = self.__builder.getBody()
        car.setBody(body)
      
      # Then engine
        engine = self.__builder.getEngine()
        car.setEngine(engine)
      
      # And four wheels
        i = 0
        while i < 4:
            wheel = self.__builder.getWheel()
            car.attachWheel(wheel)
            i += 1
        return car

# The whole product
class Car:
    def __init__(self):
        self.__wheels = list()
        self.__engine = none
        self.__body = none

    def setBody(self, body):
        self.__body = body

    def attachWheel(self, wheel):
        self.__wheels.append(wheel)

    def setEngine(self, engine):
        self.__engine = engine

    def specification(self):
        print("body: %s" % self.__body.shape)
        print("engine horsepower: %d" % self.__engine.horsepower)
        print("tire size: %d\'" % self.__wheels[0].size)

class Builder:
    def getWheel(self): pass
    def getEngine(self): pass
    def getBody(self): pass

class JeepBuilder(Builder):
    def getWheel(self):
        wheel = Wheel()
        wheel.size = 22
        return wheel

    def getEngine(self):
        engine = Engine()
        engine.horsepower = 400
        return engine

    def getBody(self):
        body = Body()
        body.shape = "SUV"
        
        return body

# Car parts
class Wheel:
    size = none

class Engine:
    horsepower = none

class Body:
    shape = none

def main():
    jeepBuilder = JeepBuilder() # initialize the class
   
    director = Director()
   
   # Build Jeep
    print("Jeep")
    director.setBuilder(jeepBuilder)
    jeep = director.getCar()
    jeep.specification()
    print("")

if __name__ == "__main__":
    main()