Python's Descriptor Protocol, The Feature Behind Everything You Use Daily

You use descriptors every day. Every time you write @property , every time you call a method, every time you use @staticmethod or @classmethod , you are using the descriptor protocol. Most Python developers have no idea it exists as a unified mechanism. Once you see it, you cannot unsee it. What a Descriptor Is A descriptor is any object that defines at least one of three methods: __get__ , __set__ , or __delete__ . That is it. When an attribute lookup finds one of these objects sitting in a cla