Matt Harrison on Twitter: "I often teach about Decorators in Python. Many know how to use them, but few can write them. These are tricky because nested functions make our brains hurt.
Python decorators (live edition)
python - Is my in-class decorator not Pythonic enough or PyCharm not smart enough in lint warning? - Stack Overflow
A Gentle Introduction to Decorators in Python - MachineLearningMastery.com
Python Decorators: A Complete Guide - GeeksforGeeks
Decorators with parameters in Python - GeeksforGeeks
Decorators in Python - GeeksforGeeks
closures - Trying to Understand this bit of Python code on the topic of decorators - Stack Overflow
Decorator pattern - Wikipedia
Decorators with parameters in Python - GeeksforGeeks