human
Here's a good function header given the following:
I wrote the below code

    def inner(self, *args, **kwargs):
        target_id = None
        if (('target_id' in kwargs) and (kwargs['target_id'] != None)):
            target_id = kwargs['target_id']
        else:
            target_id = 0
        if (not self.target_is_valid(target_id)):
            raise NoSuchTargetException()
        return func(self, *args, **kwargs)
    return inner

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

def validate_target(func, *args, **kwargs):