Python Decorators

What is a Decorator?

In Python, a decorator is a function that allows you to add new functionality to an existing object without modifying its structure. Decorators are very powerful and useful tool in Python since it allows programmers to modify the behavior of a function or class.

Why Use Decorators?

• They are used to add functionality to existing code.
• You can use decorators to extend functionality in a clean, readable way.
• They help in adhering to the DRY (Don't Repeat Yourself) principle, reducing redundancy.

How to Create Decorators

Creating a decorator involves defining a function that takes another function as an argument, and then it performs some additional operations, and returns a function.

Example:

def my_decorator_function(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_function
    def say_hello():
        print("Hello!")

    say_hello()

Explore More

Delve deeper into the world of Python with these tutorials:

• Lambda Functions - Unlock the power of anonymous functions
• List Comprehensions - Master the art of meaningful lists
• Context Managers - Manage resources efficiently

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