Python爬取信息管理系统计算学分绩点

试手登录了下我们学校的研究生信息管理系统，自动计算学分绩点

 # -*- coding:utf-8 -*-
 import urllib
 import urllib2
 import re
 import cookielib
 from bs4 import BeautifulSoup

 class OUC:
     def __init__(self,username,password):
         self.loginUrl = "http://graduate.ouc.edu.cn/j_acegi_security_check"
         # self.leftFrameUrl = "http://graduate.ouc.edu.cn/listLeft.do?"
         self.frameGradeUrl = "http://graduate.ouc.edu.cn/accessModule.do?moduleId=25011&groupId="
         # self.gradeUrl = "http://graduate.ouc.edu.cn/listMyBulletin.do?"
         self.cookies = cookielib.CookieJar()
         self.postdata = urllib.urlencode({
             'j_username':username,
             'j_password':password,
             'groupId':''
         })
         self.opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(self.cookies))

     def getPage(self):
         user_agent = 'Mozilla/4.0(compatible;MSIE 5.5;Windows NT)'
         headers = {'User-Agent':user_agent}
         request = urllib2.Request(
             url=self.loginUrl,
             data=self.postdata,
             headers=headers
         )
         result = self.opener.open(request)
         gradeResult = self.opener.open(self.frameGradeUrl)
         btfsp = BeautifulSoup(gradeResult.read())
         # print  btfsp.prettify()

         content = btfsp.body.find_all("tr")
         resultTable = [[0 for col in range(3)] for row in range(14)]
         print u'专业名称'.rjust(15),'\t',u'成绩','\t',u'学分'
         i = 0
         for item in content[1:]:
             itemList = item.find_all("td")
             classname = itemList[1].text.split(' ')[0].strip()
             score = itemList[6].text.split('\n')[7].strip()
             weight = itemList[7].text
             resultTable[i][0] = classname
             resultTable[i][1] = float(score)
             resultTable[i][2] = float(weight)
             print classname.rjust(15),'\t',score.rjust(3),'\t',weight.rjust(3)
             i += 1
             # print '%10s' % classname,'%-3s' % score.split('\n')[7],'\t',weight
         # 计算GPA
         sumGPA = 0
         sumWeight = 0
         for k in range(14):
             sumWeight += resultTable[k][2]
             sumGPA += resultTable[k][1] * resultTable[k][2]
             gpa = sumGPA / sumWeight

         print u'\n学分绩点为:',gpa

 if __name__ == '__main__':
     # ouc_stu = OUC()
     print '================ Welcome ===================='
     print u'Please enter your login messages:'
     username = input('username:')
     password = input('password:')
     print u'Waiting...'
     ouc_stu = OUC(username,password)
     ouc_stu.getPage()

原文地址：http://www.cnblogs.com/leonwen/p/5730874.html