class Bird(object):
    def __init__(self):
        self.birdname="bird"
class Human(object):
    def __init__(self):
        self.humanname="human"

class BirdHuman(object):
    def __init__(self):
        self.bird=Bird()
        self.human=Human()
    def speak(self):
        print('I am '+self.bird.birdname+" and "+self.human.humanname)
birdhuman=BirdHuman()
birdhuman.speak()