class Duck:
def quack(self):
print("Quack")
def walk(self):
print("Shuffle")
class Fox:
def quack(self):
print("Quackkkkk")
def walk(self):
print("Shuffffle")
def kill(self):
print("Yum!")
def foo(x):
x.quack()
x.walk()
donald = Duck()
swiper = Fox()
foo(donald)
foo(swiper)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX