最近教务系统升级了。。用 python 爬时， URL 被加密了无法操作模拟登陆

Header里的信息：

General
Remote Address:222.201.132.116:80
Request URL:http://222.201.132.116/(wa4qm345dj1m5i55qectnu22)/default2.aspx
Request Method:POST
Status Code:302 Found

Cache-Control:no-cache, no-store
Content-Length:173
Content-Type:text/html; charset=gb2312
Date:Sat, 18 Apr 2015 13:43:18 GMT
Expires:-1
Location:/(wa4qm345dj1m5i55qectnu22)/xs_main.aspx?xh=（这里是我的教务系统ID）
P3P:CP=CAO PSA OUR
Pragma:no-cache
Pragma:no-cache
Server:Microsoft-IIS/6.0
X-AspNet-Version:1.1.4322
X-Powered-By:ASP.NET

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,/;q=0.8
Accept-Encoding:gzip, deflate
Accept-Language:zh-CN,zh;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:198
Content-Type:application/x-www-form-urlencoded
Host:222.201.132.116
Origin:http://222.201.132.116
Referer:http://222.201.132.116/(wa4qm345dj1m5i55qectnu22)/default2.aspx
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2369.0 Safari/537.36

__VIEWSTATE:dDwyODE2NTM0OTg7Oz5VGnjXV87Z19Dm3QbgRgvcptEYyA==
txtUserName:（我的ID）
TextBox2:（我的密码）
txtSecretCode:xwcu
RadioButtonList1:(unable to decode value)
Button1:
lbLanguage:
hidPdrs:
hidsc:

主要是URL:http://222.201.132.116/(wa4qm345dj1m5i55qectnu22)/default2.aspx
这个URL中间是什么加密方法啊？ ＝ ＝

自己模拟登陆的代码：

import urllib
import urllib2
import cookielib
import re

class SCUT:

    def __init__(self):
        self.loginUrl = '这里是Login的URL'
        self.cookies = cookielib.CookieJar()
        self.postdata = urllib.urlencode({
            'txtUserName:':'我的ID',
            'TextBox2':'我的密码'
         })
        self.opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(self.cookies))

    def getPage(self):
        request  = urllib2.Request(
            url = self.loginUrl,
            data = self.postdata)
        result = self.opener.open(request)
        #打印登录内容
        print result.read().decode('gbk')


scut = SCUT()
scut.getPage()

有大神知道如何解决吗？