Abstract base classes (ABCs) are used for several reasons:
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Define a Common Interface: ABCs allow you to define a common interface that all subclasses must implement, ensuring consistency across different implementations.
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Enforce Method Implementation: By using the
@abstractmethoddecorator, you can enforce that certain methods must be implemented in any subclass, preventing the creation of incomplete classes. -
Promote Code Reusability: ABCs can contain shared code (concrete methods) that can be reused by subclasses, reducing code duplication.
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Support Polymorphism: They enable polymorphism, allowing you to treat different subclasses as instances of the abstract base class, which can simplify code and improve flexibility.
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Encourage Design Patterns: ABCs are often used in design patterns, such as the Template Method pattern, to define a skeleton of an algorithm while allowing subclasses to provide specific implementations.
Overall, they help create a more structured and maintainable codebase.
