urlopen

#NON AUTH VERSION
    mydata=urllib.urlencode(mydata)
    path='complete path to script.php'

    req=urllib2.Request(path, mydata)
    req.add_header("Content-type", "application/x-www-form-urlencoded")


    try:
        page=urllib2.urlopen(req)
    except HTTPError, e:
        print 'The server couldn\'t fulfill the request.'
        print 'Error code: ', e.code
    except URLError, e:
        print e.reason

    print page



#AUTH VERSION

    realm = 'None'
    url = 'complete path to script.php
    user = 'my user'
    passwd = 'my password ¿md5 encoded, or not?'
    data = mydata

    # create auth handler, build opener
    auth_handler = urllib2.HTTPBasicAuthHandler()
    auth_handler.add_password(realm=realm,
                                uri=url,
                                user=user,
                                passwd=passwd)
    opener = urllib2.build_opener(auth_handler)

    # use opener to open the URL
    file_handle = opener.open(url, urllib.urlencode(data))

    # print response
    print file_handle.read()