How can I create my own decorators in Python?

How can I create my own decorators in Python?

Creating your own decorators in Python involves defining a function that takes another function as an argument and returns a new function. Would you like a simple example?

Yes, please provide an example.

Sure! Here's a basic 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()

This will print messages before and after calling say_hello.

What if I want to pass arguments to the decorated function?

Great question! You can modify the wrapper function to accept arguments. Here's how:

def my_decorator(func):
    def wrapper(*args, **kwargs):
        print("Before calling the function.")
        result = func(*args, **kwargs)
        print("After calling the function.")
        return result
    return wrapper

@my_decorator
def greet(name):
    print(f"Hello, {name}!")

greet("Alice")

This allows you to pass any number of arguments to the decorated function.