Calling a list from a class in Python - python-3.x

Question

If I call a list from a class, the output is not the content of the list.
I would like to call self.pets from the class Owner, but the output is not the content of the list, but that:
David Friend's pets are: [<__main__.Pet object at 0x7f547c620128>, <__main__.Pet object at 0x7f547c620198>]
Audrey Hepburn's pets are: [<__main__.Pet object at 0x7f547c620208>]
I expected my code to print this:
David Friend's pets are: Boggle Joyner, Artemis Joyner
Audrey Hepburn's pets are: Pippin Hepburn
Here is the code:
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 = []
def get_pets_string(an_owner):
return str(an_owner.name.first) + " " + str(an_owner.name.last) + "'s pets are: " + str(an_owner.pets)
owner_1 = Owner(Name("David", "Friend"))
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)
owner_1.pets.append(pet_1)
owner_1.pets.append(pet_2)
owner_2.pets.append(pet_3)
print(owner_2.name.first)
print(get_pets_string(owner_1))
print(get_pets_string(owner_2))

Answer 1

This is because you are storing the pet objects in a list so it is printing out the object. You should overwrite the string function to fix this issue like so:
class Pet:
def __init__(self, name, owner):
self.name = name
self.owner = owner
def __str__(self):
return self.name
The name class should be like so:
class Name:
def __init__(self, first, last):
self.first = first
self.last = last
def __str__(self):
return self.first + " " + self.last
And the get pets function should be like so:
def get_pets_string(an_owner):
res = str(an_owner.name.first) + " " + str(an_owner.name.last) + "'s pets are: "
for pet in an_owner.pets:
res += str(pet) + ", "
return res
This is if you would like to keep it like you have created it, however there are much easier ways of writing this code such as:
class Owner:
def __init__(self, name: str):
self.name = name
self.pets = []
def add_pet(self, pet: str):
self.pets.append(pet)
def get_pets(self):
res = self.name + "'s pets are: "
for pet in self.pets:
res += pet + ", "
return res
o = Owner("David Friend")
o.add_pet("Boggle Joyner")
o.add_pet("Artemis Joyner")
print(o.get_pets())