Inheritance and super in Python

Subclasses: sharing a base and overriding what differs.

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

    def speak(self):
        return f"{self.name} makes a sound"


class Dog(Animal):
    def speak(self):
        return f"{self.name} says woof"


class Puppy(Dog):
    def speak(self):
        return super().speak() + " (squeakily)"

How it works

1. Dog(Animal) inherits __init__ untouched.
2. Overriding speak replaces the base behavior.
3. super().speak() extends the parent instead of replacing it.

Keywords and builtins used here

• Animal
• Dog
• Puppy
• class
• def
• return
• self
• speak
• super

The run, in numbers

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Step 2 of 5 in Classes, step 40 of 72 in Language basics.

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