human
I wrote the below code

    @functools.wraps(f)
    def wrapper(*args, **kwargs):
        if store.exists(store.image_mark_path(kwargs['image_id'])):
            return toolkit.api_error('Image    is    being    uploaded,    retry    later')
        return f(*args, **kwargs)
    return wrapper

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

def require_completion(f):