What are the differences between Python decorators and regular functions?

What are the differences between Python decorators and regular functions?

Python decorators are a specific type of function that modify the behavior of another function. They are often used to add functionality to existing functions in a clean and readable way.

Can you give me an example of a Python decorator?

Sure! Here's a simple example:

def my_decorator(func):
    def wrapper():
        print("Something is happening before the function is called.")
        func()
        print("Something is happening after the function is called.")
    return wrapper

@my_decorator
def say_hello():
    print("Hello!")

say_hello()

How do decorators differ from higher-order functions?

Decorators are a type of higher-order function specifically designed to wrap another function, while higher-order functions can also return new functions or take functions as arguments without necessarily modifying their behavior.

When should I use decorators?

You should use decorators when you want to add functionality to existing functions in a reusable way, such as logging, access control, or modifying input/output.