#! /usr/bin/python
import urllib2

auth = urllib2.HTTPBasicAuthHandler()

auth.add_password("navlogin",
                  "http://python.su/",
                  "grok",
                  "mypass")

opener = urllib2.build_opener(auth)

urllib2.install_opener(opener)
u = urllib2.urlopen("http://python.su/forum/")

text = u.read()
f = "/home/adv/python/pass"
fopen = open(f, "w")
fopen.write(text)
fopen.close()

#!/usr/bin/python
import urllib, urllib2

url = 'http://python.su/forum/login.php'

data = urllib.urlencode({'req_username' : 'mynickname', 'req_password' : 'mypass'})

headers = {'Host' : 'http://python.su',
           'User-Agent' : 'Mozilla/4.0 (compatible; Windows NT 5.1; .NET CLR 2.0.50727)',
           'Accept' : 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
           #'Accept-Language' : 'ru-ru,ru;q=0.8,en-us;q=0.5,en;q=0.3',
           #'Accept-Encoding' : 'gzip,deflate',
           #'Accept-Charset' : 'windows-1251,utf-8;q=0.7,*;q=0.7',
           'Keep-Alive' : '115',
           'Connection': 'keep-alive',
           'Referer' : 'http://python.su/forum',
           'Content-Type' : 'application/x-www-form-urlencoded'}

request = urllib2.Request(url, data, headers)
handle = urllib2.urlopen(request)

print handle.read()