what is @something on a function, i heard it is for decoration?!

 

Title: 🎨 Exploring Python Decorators: Adding Magic to Your Code! ✨

Python decorators are like the fairy godmothers of programming—they sprinkle a little magic onto your functions, enhancing them with extra functionality. In this blog post, we'll dive into the enchanting world of decorators, exploring how they work and unleashing their powers with two whimsical examples.

**Example 1: The Enigmatic @echo Decorator**

Imagine a decorator that echoes the inputs and outputs of a function, adding a touch of sparkle to the console. Behold, the @echo decorator!

```python

def echo(func):

    def wrapper(*args, **kwargs):

        print("✨ Echoing inputs:")

        for arg in args:

            print(f"\t- {arg}")

        result = func(*args, **kwargs)

        print("✨ Echoing output:")

        print(f"\t- {result}")

        return result

    return wrapper

@echo

def add(a, b):

    return a + b

add(3, 5)

```

When we call the `add` function, the @echo decorator adds a dash of magic by printing the inputs and the result with sparkling flair.

**Example 2: The Marvelous @vectorize Decorator**

Next, let's conjure up a decorator that vectorizes a function, making it soar through a list of inputs with the grace of a unicorn in flight.

```python

def vectorize(func):

    def wrapper(*args, **kwargs):

        results = []

        for arg in args[0]:

            results.append(func(arg))

        return results

    return wrapper

@vectorize

def square(x):

    return x ** 2

numbers = [1, 2, 3, 4, 5]

print(square(numbers))

```

With the power of the @vectorize decorator, our `square` function gracefully computes the square of each element in a list, unleashing a rainbow of results.

Decorators in Python are like wands in the hands of a wizard—they empower your functions with extraordinary capabilities, making your code more elegant and enchanting. So go ahead, sprinkle some decorator magic into your Python scripts and watch them come to life with brilliance and wonder! ✨🐍

Happy decorating! 🎩🌟