Can I use parameters with decorators?

Can I use parameters with decorators in Python?

Yes, you can use parameters with decorators in Python. This allows you to customize the behavior of the decorator.

How do I create a decorator that takes parameters?

You can define a decorator function that returns another function. The outer function takes the parameters, and the inner function takes the function to be decorated.

Can you show me an example?

Sure! Here's a simple example:

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

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

say_hello()

What happens if I don't pass any parameters?

If you don't pass any parameters, you can create a decorator without parameters, which will still work but won't have the customization that parameters provide.