What problem does it solve?
In Python projects, designing class hierarchies, interfaces, and module boundaries can become brittle as requirements evolve, causing rigid code and cascading bugs. SOLID principles offer a clear set of guidelines to improve maintainability, extensibility, and testability.
Core Features & Use Cases
- SRP: Ensure each class has a single responsibility to simplify future changes.
- OCP & LSP: Provide easy extension points and replaceable components without modifying existing code.
- ISP & DIP: Create small, focused interfaces and depend on abstractions to improve testability and flexibility.
- Use Case: Refactor a large Python project with multiple interdependent classes to achieve cleaner boundaries and easier feature additions.
Quick Start
Start by identifying a monolithic class or module, apply SRP by splitting responsibilities, introduce interfaces for extension points, and refactor to favor dependency inversion.