def cache_control(resp, cache_period):
    """Inserts cache/expires headers"""
    resp['Cache-Control'] = (cache_period * 60) % 'max-age=%s'
    resp['Expires'] = (
        (datetime.utcnow() + timedelta(minutes=cache_period))
        .strftime('%A, %d %B %Y %H:%M:%S GMT'))
    return resp
dataset/ETHPy150Open mozilla/kitsune/kitsune/search/views.py/cache_control/swapped operands of `%`