python用win32com模拟浏览器

# -*- coding:UTF-8 -*- 
#!/user/bin/env python
'''
Created on 2010-9-1
@author: chenzehe
'''
import win32com.client
from time import sleep

loginurl='http://passport.cnblogs.com/login.aspx'
loginouturl='http://passport.cnblogs.com/logout.aspx'
username='XXX'
password='XXX'

ie = win32com.client.Dispatch("InternetExplorer.Application")    
ie.Visible = 0


ie.Navigate(loginurl)    
state = ie.ReadyState    
print "打开登陆页面"    
while 1:    
    state = ie.ReadyState    
    if state ==4:    
        break    
    sleep(1)
print "页面载入完毕，输入用户名密码"    
state = None

ie.Document.getElementById("tbUserName").value=username    
ie.Document.getElementById("tbPassword").value=password    
ie.Document.getElementById("btnLogin").click()   


while 1:    
    state = ie.ReadyState    
    print state    
    if state ==4 and str(ie.LocationURL) == "http://home.cnblogs.com/":    
        break
    sleep(1)
print "登陆成功" 
print '你的昵称是：'
print ie.Document.getElementById('lnk_current_user').title

#博客园只能登录一次，注销
print '注销！'
ie.Navigate(loginouturl)