python模拟表单提交登录图书馆

# -*- coding:utf-8 -*- 
import urllib 
import urllib2 
import cookielib 
import bs4 
 
result = urllib2.urlopen("http://222.200.122.171:7771/login.aspx") 
soup = bs4.BeautifulSoup(result, "html.parser") 
 
logindiv = soup.find("form", attrs={"name": "aspnetForm"}) 
Allinput = logindiv.findAll("input") 
inputData = {} 
for oneinput in Allinput: 
 if oneinput.has_attr('name'): 
  if oneinput.has_attr('value'): 
   inputData[oneinput['name']] = oneinput['value'] 
  else: 
   inputData[oneinput['name']] = "" 
inputData['ctl00$ContentPlaceHolder1$txtPas_Lib'] = '*****' 
inputData['ctl00$ContentPlaceHolder1$txtUsername_Lib'] = '*******' 
 
filename = 'cookie.txt' 
# 声明一个MozillaCookieJar对象实例来保存cookie，之后写入文件 
cookie = cookielib.MozillaCookieJar(filename) 
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie)) 
postdata = urllib.urlencode(inputData) 
result2 = opener.open("http://222.200.122.171:7771/login.aspx", postdata) 
cookie.save(ignore_discard=True, ignore_expires=True) 
#登录后 要访问的url 
bookUrl = "http://222.200.122.171:7771/user/userinfo.aspx" 
result=opener.open(bookUrl) 
print result.read()