What are the SOLID principles in Python?

What are the SOLID principles in Python?

The SOLID principles are a set of design principles that help developers create more maintainable and understandable software. They stand for Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.

Can you explain each principle briefly?

Sure! 1. Single Responsibility Principle: A class should have one, and only one, reason to change. 2. Open/Closed Principle: Software entities should be open for extension but closed for modification. 3. Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of a subclass without affecting the correctness. 4. Interface Segregation Principle: Clients should not be forced to depend on interfaces they do not use. 5. Dependency Inversion Principle: High-level modules should not depend on low-level modules; both should depend on abstractions.

How can I apply these principles in my Python projects?

You can apply these principles by structuring your code to ensure that each class has a single responsibility, using interfaces to define contracts, and relying on dependency injection to manage dependencies. This will lead to more modular and testable code.

Can you give an example of the Single Responsibility Principle?

Certainly! For instance, if you have a class that handles both user authentication and user data storage, it violates the Single Responsibility Principle. Instead, you should create one class for authentication and another for data storage, ensuring each class has a single responsibility.