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Chapter Summary
In this chapter, we explored decorators—both the function and class varieties. As we learned, decorators are a way to insert code to be run automatically when a function or class is defined. When a decorator is used, Python rebinds a function or class name to the callable object it returns. This hook allows us to add a layer of wrapper logic to function calls and class instance creation calls, in order to manage functions and instances. As we also saw, manager functions and manual name rebinding can achieve the same effect, but decorators provide a more explicit and uniform solution.
As we’ll see in the next chapter, class decorators can also be used to manage classes themselves, rather than just their instances. Because this functionality overlaps with metaclasses, the topic of the next chapter, you’ll have to read ahead for the rest of this story. First, though, work through the following quiz. Because this chapter was mostly focused on its larger examples, its quiz will ask you to modify some of its code in order to review.
