ISP: tailoring interfaces to clients
As we delve deeper into the SOLID principles, we’ve seen how SRP promotes focused classes and OCP enables extensibility. Now, we’ll turn our attention to the interfaces these classes expose to the world. The Interface Segregation Principle (ISP) (https://en.wikipedia.org/wiki/Interface_segregation_principle) guides us in creating lean, purpose-specific interfaces that cater to the exact needs of their clients. This principle is crucial for developing flexible, modular Python code that’s easy to understand and maintain.
ISP not only builds upon the concept of single responsibility introduced by SRP but also applies it at the interface level. It advocates for designing interfaces that are narrowly focused on specific tasks, rather than interfaces that attempt to encompass too many responsibilities. This approach leads to more flexible and maintainable systems as clients only depend on the methods they actually use.
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