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Abstract classes are a fundamental concept in object-oriented programming (OOP) that provide a blueprint for creating related classes. In Python, abstract classes serve as a base for inheritance, defining a common interface and enforcing certain methods to be implemented by derived classes.
This article will guide you through the practical applications of abstract classes in Python, complete with up-to-date code examples.
Understanding Abstract Classes
An abstract class is a class that cannot be instantiated directly. Instead, it serves as a blueprint for other classes to inherit from. Abstract classes define a set of methods that derived classes must implement, ensuring a consistent interface across all subclasses.
In Python, abstract classes are defined using the abc
(Abstract Base Class) module from the Python standard library. The abc
module provides the ABC
(Abstract Base Class) class and the @abstractmethod
decorator. Here's a simple example of an abstract class:
from abc import ABC, abstractmethod
class Shape(ABC):
@abstractmethod
def area(self):
pass
@abstractmethod…