#This problem uses the same Pet, Owner, and Name classes from #the previous two problems. In this case, however, we want you #to modify one of the classes. # #Notice that in the previous two problems, we always had to #create owners and pets in the same order: first create the owner, #then create the pets, then add the pets to the owner's list #of pets. If we forgot that last step, then the pet would have #its owner, but the owner would not have its list of pets. #We cannot create a pet without an owner (because owner is a #positional parameter in the constructor __init__), but there #is nothing forcing us to add the pet to the owner's list of #pets once created. # #Modify the classes below so that when a new instance of Pet #is created, it is automatically added to its Owner's list of #pets. # #HINT: Remember that the self attribute refers to the instance #itself. For example, if you wanted your object to say, "add me #to this_list", you would write the_list.append(self). # #HINT 2: If you're stuck, look back at how we added pets to #owners in test code on the previous problems.

#Modify one or more of the classes below: class Name: def __init__(self, first, last): self.first = first self.last = last

class Pet: def __init__(self, name, owner): self.name = name self.owner = owner class Owner: def __init__(self, name): self.name = name self.pets = [] #Below are some lines of code that will test your edits. #Specifically, they will print the number of pets in #each owner's list of pets. Note that you should note #add to the code below; the correct output should come #solely from your changes to the code above. # #If your code works correctly, this will originally print: #2 #1 owner_1 = Owner(Name("David", "Joyner")) owner_2 = Owner(Name("Audrey", "Hepburn"))

pet_1 = Pet(Name("Boggle", "Joyner"), owner_1) pet_2 = Pet(Name("Artemis", "Joyner"), owner_1) pet_3 = Pet(Name("Pippin", "Hepburn"), owner_2)

print(len(owner_1.pets)) print(len(owner_2.pets))