Can anyone explain me decorators in easiest way

Answer 1

Decorator fn:
Hey give me your function, I make a cooler function from it and give it back to to you.

Program: But I can add myself sth. cool!

Decorator: but once defined u can do it with every function

Program:
Hey Decorator okay I call you with @fn before the function I send to to you.

Answer 2

A decorator is simply a function that modifies a function and can be called via "@"

Answer 3

It's better to read on "habr"