human
Complete the below
def authenticated(method):

    ''''Decorate methods with this to require that the user be logged in.
    If the user is not logged in, they will be redirected to the configured
    `login url <RequestHandler.get_login_url>`.'
    '''

Can you provide a the Python code you requested?
assistant
#Here is the Python code you requested.
    @functools.wraps(method)
    def wrapper(self, *args, **kwargs):
        if (not self.current_user):
            if (self.request.method in ('GET', 'HEAD')):
                url = self.get_login_url()
                if ('?' not in url):
                    if urlparse.urlsplit(url).scheme:
                        next_url = self.request.full_url()
                    else:
                        next_url = self.request.uri
                    url += ('?' + urlencode(dict(next=next_url)))
                self.redirect(url)
                return
            raise HTTPError(403)
        return method(self, *args, **kwargs)
    return wrapper