What are parameters in Python decorators?

Can you explain what parameters are in Python decorators?

Sure! In Python, decorators are functions that modify the behavior of another function. Parameters in decorators allow you to pass arguments to the decorator itself.

How do I create a decorator that takes parameters?

To create a decorator with parameters, you need to define a function that returns a decorator. Here's a simple example:

def my_decorator(param):
    def decorator(func):
        def wrapper(*args, **kwargs):
            print(f'Parameter: {param}')
            return func(*args, **kwargs)
        return wrapper
    return decorator

Can you show me how to use that decorator?

Absolutely! You can use it like this:

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

say_hello()  # This will print 'Parameter: Hello' followed by 'Hello, World!'

What are some common use cases for decorators with parameters?

Common use cases include logging, access control, and modifying input/output of functions. They provide a clean way to add functionality.