def prefixurl(base=''):
    url = web.ctx.path.lstrip('/')
    for i in xrange(url.count('/')): 
        base += '../'
    if not base: 
        base = './'
    return base
Destroy the image or raise if it does not exist.
dataset/ETHPy150Open rouge8/20questions/web/http.py/prefixurl--crossover with--dataset/ETHPy150Open rcbops/glance-buildpackage/glance/registry/db/api.py/image_destroy