Decorators – summary

A decorator is a very powerful and useful tool in Python, because it allows programmers to modify the behavior of a function, method, or class.

Decorators allow us to wrap another callable object in order to extend its behavior.

Decorators rely heavily on closures and *args and **kwargs.

Interesting note:

• the idea of decorators was described in two documents – PEP 318 and PEP 3129. Don't be discouraged that the first PEP was prepared for Python 2, because what matters here is the idea, not the implementation in a specific Python.