How Do You Implement and Use Decorators in Python?

Decorators in Python are functions that modify the behavior of other functions or methods. They provide a way to wrap a function with additional functionality.

Example of a decorator:

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

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

say_hello()