7 Levels of Using Decorators in Python

Master the most magical feature of Python

Yang Zhou
Yang Zhou
Jan 13 · 6 min read
7 Levels of Using Decorators in Python
Photo by YoungScum on Wallhaven


Level 0: Understand the Basic Concepts and Usages

What is a decorator?

get_title = add_author(get_title)

Why do we need decorators?

Editing a function many times is bug-prone. Assembling decorators when it’s needed is elegant and bug-free.

— Yang Zhou

Level 1: Wrap a Function Properly

Level 2: Apply Multiple Decorators to a Function

Level 3: Wrap a Function That Receives Arguments

def get_title(title):
return title

Level 4: Write a Decorator That Receives Arguments

Level 5: Keep the Metadata of Original Functions

Level 6: Keep It Simple — The Design Philosophy of Decorators

Keep it simple and stupid.

A design principle noted by the U.S. Navy


Dive into technology, investment and entrepreneurship.

Medium is an open platform where 170 million readers come to find insightful and dynamic thinking. Here, expert and undiscovered voices alike dive into the heart of any topic and bring new ideas to the surface. Learn more

Follow the writers, publications, and topics that matter to you, and you’ll see them on your homepage and in your inbox. Explore

If you have a story to tell, knowledge to share, or a perspective to offer — welcome home. It’s easy and free to post your thinking on any topic. Write on Medium

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store