class Bird:
def __init__(self):
self.flying = True
def birdsong(self):
print("새소리")
class Sparrow(Bird):
def birdsong(self):
print("짹짹")
class Chicken(Bird):
def __init__(self):
self.flying = False
my_sparrow = Sparrow()
my_chicken = Chicken()
my_sparrow.birdsong()
my_chicken.birdsong()