urllib2 basic auth

urllib2_auth.py

# quoted from http://www.wkoorts.com/wkblog/2008/10/27/python-proxy-client-connections-requiring-authentication-using-urllib2-proxyhandler/
# urllib2_proxy_handler.py
#
# Author: Wayne Koorts
# Date:   27/10/2008
#
# Example for using urllib2.urlopen() with a proxy server requiring authentication
 
import urllib2
 
uri = "http://www.python.org"
http_proxy_server = "someproxyserver.com"
http_proxy_port = "3128"
http_proxy_realm = http_proxy_server # Worked in my (limited) testing environment.
http_proxy_user = "username"
http_proxy_passwd = "password"
 
# Next line = "http://username:password@someproxyserver.com:3128"
http_proxy_full_auth_string = "http://%s:%s@%s:%s" % (http_proxy_user,
                                                      http_proxy_passwd,
                                                      http_proxy_server,
                                                      http_proxy_port)
 
def open_url_no_proxy():
    urllib2.urlopen(uri)
 
    print "Apparent success without proxy server!"
 
def open_url_installed_opener():
    proxy_handler = urllib2.ProxyHandler({"http": http_proxy_full_auth_string})
 
    opener = urllib2.build_opener(proxy_handler)
    urllib2.install_opener(opener)
    urllib2.urlopen(uri)
 
    print "Apparent success through proxy server!"
 
if __name__ == "__main__":
    open_url_no_proxy()
    open_url_installed_opener()