human
I wrote the below code

    @functools.wraps(method)
    def wrapper(self, *args, **kwargs):
        if (not self.request.path.endswith('/')):
            if (self.request.method in ('GET', 'HEAD')):
                uri = (self.request.path + '/')
                if self.request.query:
                    uri += ('?' + self.request.query)
                self.redirect(uri, permanent=True)
                return
            raise HTTPError(404)
        return method(self, *args, **kwargs)
    return wrapper

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

def addslash(method):