What are the differences between interfaces and abstract classes in Python?

What are the differences between interfaces and abstract classes in Python?

In Python, interfaces are defined using abstract base classes (ABCs) and focus on defining methods without implementation. Abstract classes can have both abstract methods and concrete methods, allowing for shared behavior.

Can you give me an example of each?

Sure! An interface can be created using the abc module with only abstract methods. An abstract class can also use the abc module but can include implemented methods as well.

When should I use an interface instead of an abstract class?

Use an interface when you want to define a contract for classes without enforcing any implementation. Use an abstract class when you want to provide some shared behavior along with the contract.

Are there any performance differences between the two?

Generally, the performance difference is negligible. The choice should be based on design needs rather than performance.