## Animal is parents
## Animal is-a object (yes, sort of confusing) look at the extra credit
class Animal(object):
    pass

## Animal is parents and Dog is child
## Dog is-a Animal and has-a __init__ that takes self and name parameters
class Dog(Animal):

    def __init__(self, name):
        ## Dos has-a name
        self.name = name

## Animal is parents and Cat is child
## Cat is-a Animal and has-a __init__ that takes self and name parameters
class Cat(Animal):

    def __init__(self, name):
        ## Cat has-a name
        self.name = name

## Person is parents
## Person is-a object and has-a __init__ that takes self and name parameters
class Person(object):

    def __init__(self, name):
        ## Person has-a name
        self.name = name

        ## Person has-a pet of some kind
        self.pet = None

## Persion is parents and Employee is child
## Employee is-a Person and has-a __init__ that takes self and name parameters
class Employee(Person):

    def __init__(self, name, salary):
        ## ?? hmm what is this strange magic?
        ## From super, get the __init__ function, and call it with parameters self, name
        super(Employee, self).__init__(name)
        ## Employee has-a salary
        self.salary = salary

## Fish is parents
## Fish is-a object
class Fish(object):
    pass

## Fish is parents and Salmon is child
## Salmon is-a Fish
class Salmon(Fish):
    pass

## Fish is parents and Halibut is child
## Halibut is-a Fish
class Halibut(Fish):
    pass


## Set rover to an instance of class Dog
## rover is-a Dog that has-a name is-a Rover
rover = Dog("Rover")

## Set satan to an instance of class Cat
## stan is-a cat that has-a name is-a Satan
satan = Cat("Satan")

## Set mary to an instance of class Person
## mary is-a Person that has-a name is-a Mary
mary = Person("Mary")

## From mary, get the pet attribute, and set it to satan
## mary's pet is-a cat that has-a name that is-a Satan
mary.pet = satan

## Set frank to an instance of class Employee
## frank is-a Employee and salary is-a 120000
frank = Employee("Frank", 120000)

## From frank, get the pet attribute, and set it to rover
## frank's pet is-a dog that has-a name that is-a Rover
frank.pet = rover

## Set flipper to an instance of class Fish
## flipper is-a Fish
flipper = Fish()

## Set crouse to an instance of class Salmon
## crouse is-a Salmon
crouse = Salmon()

## Set harry to an instance of class Halibut
## harry is-a Halibut
harry = Halibut()