minimal_example_poo.py

# Minimal example of POO

class Person(object):
    has_animal = False
    pets = list()

    def __init__(self, name, last_name):
        self.name = name
        self.last_name = last_name

    def __str__(self):
        return f"{self.name} {self.last_name}"
    
    def get_pets(self):
        return [pet for pet in self.pets]
    
    def has_pets(self):
        return self.has_animal


class Pet(object):
    vaccines = list()

    def __init__(self, animal, name, years_old, owner=None):
        self.animal = animal
        self.name = name
        self.years_old = years_old
        self.owner = owner
    
    def __str__(self):
        if self.owner:
            return f"{self.name} is {self.animal} and have {self.years_old} years old. His owner is {self.owner}"
        else:
            return f"{self.name} is {self.animal} and have {self.years_old} years old."

    def adoption(self, person):
        person.pets.append(self)
        person.has_animal = True

        self.owner = person
        return f"{self.name} adoptado por {person.name}"
    
    def get_owner(self):
        if self.owner:
            return f"Su dueño es {self.owner}"
        else:
            return f"{self.name} no ha sido adoptado"

    def add_vaccine(self, new_vaccine):
        self.vaccines.append(new_vaccine)
        return f"Agregada nueva vacuna: {new_vaccine}"

    def allows_adoption(self):
        if self.owner:
            return False
        else:
            return True
    
    def is_death(self):
        pass


# create person instances
isa = Person(name="isabel", last_name="Ruiz Buritica")
print(isa)

felipe = Person(name="Andres Felipe", last_name="Ruiz")
print(felipe)

hector = Person(name="Hector", last_name="vega")
print(hector)

oscar = Person(name="oscar", last_name="Barajas")
print(oscar)

# create pets instances
percy = Pet(animal="gato", name="percy", years_old="3")
print(percy)

elmo = Pet(animal="perro", name="Elmo", years_old="1")
print(elmo)

tomas = Pet(animal="perro", name="Tomas", years_old="5")
print(tomas)

Callejera = Pet(animal="gato", name="Callejera", years_old="1")
print(Callejera)

# vaccine pets
print(percy.add_vaccine("triple felina"))
print(elmo.add_vaccine("parvo virosis"))
print(tomas.add_vaccine("pervo virosis"))

# adopted pets
print(percy.adoption(isa))

print(tomas.adoption(felipe))

print(elmo.adoption(oscar))

# validated methods for pets
print(elmo.get_owner())

print("Elmo puede ser adoptado? ", elmo.allows_adoption())

print(Callejera.get_owner())

print("La callejera puede ser adoptada? ", Callejera.allows_adoption())

# validated methods for person
oscar.get_pets()
print(oscar.has_pets())

hector.get_pets()
print(hector.has_pets())