The Essence of Python Decorators

Python decorators are a powerful and elegant way to modify or extend the behavior of functions or methods without changing their actual code. They allow you to wrap another function and add some extra functionality before and after the wrapped function runs.

Creating Decorators

To create a decorator, you define a function that takes another function as an argument, performs some action, and then returns a function. 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

def say_hello():

print('Hello!')

say_hello = my_decorator(say_hello)

say_hello()

Using the @ Syntax

Python provides a convenient syntax using the @ symbol to apply a decorator to a function. This makes it easier to understand and use decorators.…