#Part I: class definition
class Dog: 
    def __init__(self): 
        self.action = "Pant" 

#Part II: Instantiate an instance (create/declare a 'Dog' variable
#Display the current state of the 'action' attribute
rover = Dog()
print(rover.action)

#Part III: Change the state attribute
rover.action = "Bark"
print(rover.action)

#Part IV: Create another instance of a Dog
lassie = Dog()

#Part V: Change and display the attribute for lassie but not rover
#(Note: the attribute name or method name must be preceded by the reference name
# as this specifies the instance referred to).
lassie.action = "Rescue"
print(lassie.action)