What is composition in Python and how is it used?

What is composition in Python and how is it used?

Composition in Python is a design principle where a class is composed of one or more objects from other classes. It allows for code reuse and can lead to more flexible and maintainable code.

Can you give me an example of composition in Python?

Sure! Here's a simple example: if you have a class Car and a class Engine, you can create a Car object that contains an Engine object. This way, the Car class can use the functionality of the Engine class.

How does composition differ from inheritance?

Composition involves building classes using other classes, while inheritance is about creating a new class based on an existing class. Composition is often preferred for its flexibility.

When should I use composition over inheritance?

Use composition when you want to create complex types by combining simpler ones, especially when the relationship is 'has-a' rather than 'is-a'.