Python decorators are a special feature that allows you to modify the behavior of functions or classes without directly changing their code. They act like wrappers around the functions or classes, adding extra functionality to them. In simple terms, a decorator is a way to enhance or extend the behavior of a function or class by applying some modifications. You can think of it as a tool that you can use to easily add extra capabilities to your functions or classes without having to modify their original code.
Let's say you have a function that adds two numbers together. With a decorator, you can easily add some extra functionality to this function, such as logging the input and output values, without having to change the original code of the function itself. Decorators provide a convenient and reusable way to modify functions or classes in Python, making it easier to add extra features or behaviors to your code.