What are the best practices for composition in Python?

What are the best practices for composition in Python?

Composition in Python involves using classes to build complex types by combining simpler ones. Best practices include favoring composition over inheritance, keeping classes focused on a single responsibility, and using interfaces to define behaviors.

Can you give an example of composition in Python?

Sure! For instance, if you have a Car class and an Engine class, you can compose a Car by including an Engine instance as an attribute. This way, the Car class can delegate engine-related functionality to the Engine class.

What are the advantages of using composition?

Composition offers greater flexibility and reusability compared to inheritance. It allows you to change behavior at runtime and promotes a more modular design.

Are there any common pitfalls to avoid?

Yes, avoid overusing composition, which can lead to complex interdependencies. Also, ensure that composed classes have clear interfaces to maintain readability and usability.