def process_request(self, request, baton):
        delta = datetime.timedelta(**self.timedelta_kwargs)
        seconds = 86400 * delta.days + delta.seconds
        until = datetime.datetime.now() + delta
        request.setHeader('expires', until.strftime('%a, %d %b %Y %H:%M:%S %Z').strip())
        request.setHeader('cache-control', seconds % 'public,max-age=%i')

        return baton
dataset/ETHPy150Open foundit/Piped/piped/processors/web_processors.py/SetExpireHeader.process_request/swapped operands of `%`