can use as example for lesson super()

Parent and Child Classes

class Pet(object):

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

    def __str__(self):
        return "%s is a %s" % (self.name, self.species)


class Dog(Pet):

    def __init__(self, name, color ):
        Pet.__init__(self, name, "Dog")
        self.chases_cats = chases_cats

    def chasesCats(self):
        return self.chases_cats

class Person:

    def __init__(self, first, last):
        self.firstname = first
        self.lastname = last

    def Name(self):
        return self.firstname + " " + self.lastname

class Employee(Person):

    def __init__(self, first, last, staffnum):
        Person.__init__(self,first, last)
        self.staffnumber = staffnum

    def GetEmployee(self):
        return self.Name() + ", " +  self.staffnumber

x = Person("Marge", "Simpson")
y = Employee("Homer", "Simpson", "1007")

print(x.Name())
print(y.GetEmployee())

The init method of our Employee class explicitly invokes the initmethod of the Person class. We could have used super instead. super().init(first, last) is automatically replaced by a call to the superclasses method, in this case init:

    def __init__(self, first, last, staffnum):
        super().__init__(first, last)
        self.staffnumber = staffnum

Please note that we used super() without arguments.

class Person:

    def __init__(self, first, last, age):
        self.firstname = first
        self.lastname = last
        self.age = age

    def __str__(self):
        return self.firstname + " " + self.lastname + ", " + str(self.age)

class Employee(Person):

    def __init__(self, first, last, age, staffnum):
        super().__init__(first, last, age)
        self.staffnumber = staffnum

    def __str__(self):
        return super().__str__() + ", " +  self.staffnumber


x = Person("Marge", "Simpson", 36)
y = Employee("Homer", "Simpson", 28, "1007")

print(x)
print(y)