What are interfaces in Python OOP?

What are interfaces in Python OOP?

In Python, interfaces are a way to define a contract for classes. They specify methods that must be implemented.

How do I create an interface in Python?

You can create an interface using abstract base classes (ABCs) from the abc module. Define abstract methods that subclasses must implement.

Can you give me an example of an interface?

Sure! Here's a simple example:

from abc import ABC, abstractmethod

class Animal(ABC):
    @abstractmethod
    def sound(self):
        pass

class Dog(Animal):
    def sound(self):
        return 'Bark'

What happens if a subclass doesn't implement the interface?

If a subclass doesn't implement all abstract methods, it cannot be instantiated and will raise a TypeError.