import traceback
import urllib2

h = urllib2.HTTPDigestAuthHandler()
h.add_password('Test digest', 'http://cnix.ro/digest-test/', 'digesttest', 'digesttest')
o = urllib2.build_opener(h)

for x in range(7):
    try:
        result = o.open('http://cnix.ro/digest-test/index')
    except:
        traceback.print_exc()
    else:
        print('bad page with non-negative reply, choose another one')