How do I use abstract methods in Python?

How do I use abstract methods in Python?

Abstract methods in Python are defined in abstract classes and must be implemented by subclasses. You can use the abc module to create abstract classes.

Can you show me an example of an abstract class?

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 'Woof!'

class Cat(Animal):
    def sound(self):
        return 'Meow!'

In this example, Animal is an abstract class with an abstract method sound. The Dog and Cat classes implement this method.

What happens if I don't implement the abstract method?

If you don't implement the abstract method in a subclass, Python will raise a TypeError when you try to instantiate that subclass.

Can I have multiple abstract methods in one class?

Yes, you can define multiple abstract methods in a single abstract class. Each subclass must implement all of them.