factory_pattern_inter.py

class Train(object):
    def __init__(self):
        self.speed = 120
		
class Bus(object):
    def __init__(self):
        self.speed = 60
		
class Trum(object):
    def __init__(self):
        self.speed = 40

class System(object):
    def create(self, *args):
        return args
class TranspotationSystem(object):
    def __init__(self):
        self.train = Train()
	self.bus = Bus()
	self.trum = Trum()
		
def createTSSyetm(self):
    s = System()
    t_system = s.create(self.train, self.trum, self.bus)
    for t in range(0,len(t_system)): 
        print t_system[t].speed
				
if __name__=='__main__':
    T = TranspotationSystem()
    t = Train()
    tr = Trum()
    b = Bus()
    T.createTSSyetm()