Python Polymorphism: Beginner's Guide with Code Example

Here's a simple example of polymorphism in Python:

class Animal:
    def __init__(self, name):
        self.name = name

    def make_sound(self):
        pass

class Dog(Animal):
    def make_sound(self):
        print(self.name + ' barks')

class Cat(Animal):
    def make_sound(self):
        print(self.name + ' meows')

class Bird(Animal):
    def make_sound(self):
        print(self.name + ' chirps')

# create some animals
dog1 = Dog('Fido')
cat1 = Cat('Whiskers')
bird1 = Bird('Tweety')

# make them all make a sound
for animal in [dog1, cat1, bird1]:
    animal.make_sound()

In this example, we have a base class 'Animal' with a 'make_sound' method that doesn't do anything (it's just a placeholder). We then have three subclasses of 'Animal', 'Dog', 'Cat', and 'Bird', each of which overrides the 'make_sound' method to make the appropriate sound for that type of animal.

We then create some instances of each of these classes, and use a 'for' loop to call the 'make_sound' method on each of them. Because each instance is of a different class, the 'make_sound' method gets called in a different way for each one, demonstrating polymorphism.