duck typing class polymorphism python

Grotesque Gibbon answered on August 14, 2022 Popularity 3/10 Helpfulness 1/10

answer duck typing class polymorphism python

duck typing class polymorphism python

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# Illustration of Class Polymorphism and Duck Typing
# send the same method call to objects of many different types, 
# each object responds according to its own method definition, 
# i.e. same method call takes on “many forms”
class Animal:
    def __init__(self, species, name):
        self.species = species
        self.name = name
    
    def info(self):
        print(f'I am a {self.species}. My name is {self.name}')

class Cat(Animal):
    def __init__(self, name):
        super().__init__('cat', name)
        self.sound = 'Meow'

    def make_sound(self):           # This is polymorphism
        print(self.sound)

class Dog(Animal):
    def __init__(self, name):
        super().__init__('dog', name)
        self.sound = 'Bark'

    def make_sound(self):           # This is polymorphism
        print(self.sound)

class Independent_animal:
    def __init__(self, name):
        self.name = name
    
    def info(self):
        print(f'I am {self.name}. I print my own info')
    
    def make_sound(self):
        print('I make my own sound')

cat1 = Cat("Kitty")
dog1 = Dog("Fido")
indi1 = Independent_animal('Freedom')

# Duck typing: to iterate these objects together, they do not have to belong to
# the same superclass. As long as each object has info() and make_sound() functions
# they will execute. e.g. indi1 object. 
for animal in (cat1, dog1, indi1):
    animal.info()
    animal.make_sound()
    
# I am a cat. My name is Kitty
# Meow
# I am a dog. My name is Fido
# Bark
# I am Freedom. I print my own info
# I make my own sound

Popularity 3/10 Helpfulness 1/10 Language python

Source: Grepper

Tags: polymorphism python

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Contributed on Aug 14 2022

Grotesque Gibbon

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duck typing class polymorphism python

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