Читать книгу Professional Python - Luke Sneeringer - Страница 6

Decorators provide an excellent way to say, “I want this specific, reusable piece of functionality in these specific places.” When written well, they are modular and explicit.

The modularity of decorators (you can apply or remove them from functions or classes easily) makes them ideal for avoiding the repetition of boilerplate setup and teardown code. Similarly, because decorators interact with the decorated function itself, they excel at registering functions elsewhere.

Also, decorators are explicit. They are applied, in-place, to all callables where they are needed. This is valuable for readability, and therefore for debugging. It is obvious exactly what is being applied and where.