THE ULTIMATE PYTHON TUTORIAL
7 Levels of Using Decorators in Python
Master the most magical feature of Python
Introduction
The simplest and fastest way to distinguish junior and senior Python programmers in a technical interview is letting him or her write a decorator. Because mastering the decorator, which is the most magical Python feature of all time, is a milestone for a Python developer.
There are many tips and tricks worth to mention about decorators, but they are scattered around different books or tutorials and some of them may make beginners more confused. This is why I wrote this article.
This article will dive into all the core concepts, techniques and usages of Python decorators by 7 levels. If you understand half of them, reading Python programs containing decorators will be easy. If you understand all of them, designing and writing decorators in Python will be just a piece of cake. 🍰
Level 0: Understand the Basic Concepts and Usages
What is a decorator?
The decorator is just another functional programming feature in Python. It receives a callable (function, method or class), and returns a callable. Let’s see a simple example:
