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
 1 # -*- coding:utf-8 -*-
 2 import urllib
 3 import urllib2
 4 import re
 5 import cookielib
 6 from bs4 import BeautifulSoup
 7 
 8 class OUC:
 9     def __init__(self,username,password):
10         self.loginUrl = "http://graduate.ouc.edu.cn/j_acegi_security_check"
11         # self.leftFrameUrl = "http://graduate.ouc.edu.cn/listLeft.do?"
12         self.frameGradeUrl = "http://graduate.ouc.edu.cn/accessModule.do?moduleId=25011&amp;groupId="
13         # self.gradeUrl = "http://graduate.ouc.edu.cn/listMyBulletin.do?"
14         self.cookies = cookielib.CookieJar()
15         self.postdata = urllib.urlencode({
16             'j_username':username,
17             'j_password':password,
18             'groupId':''
19         })
20         self.opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(self.cookies))
21 
22     def getPage(self):
23         user_agent = 'Mozilla/4.0(compatible;MSIE 5.5;Windows NT)'
24         headers = {'User-Agent':user_agent}
25         request = urllib2.Request(
26             url=self.loginUrl,
27             data=self.postdata,
28             headers=headers
29         )
30         result = self.opener.open(request)
31         gradeResult = self.opener.open(self.frameGradeUrl)
32         btfsp = BeautifulSoup(gradeResult.read())
33         # print  btfsp.prettify()
34 
35         content = btfsp.body.find_all("tr")
36         resultTable = [[0 for col in range(3)] for row in range(14)]
37         print u'专业名称'.rjust(15),'	',u'成绩','	',u'学分'
38         i = 0
39         for item in content[1:]:
40             itemList = item.find_all("td")
41             classname = itemList[1].text.split(' ')[0].strip()
42             score = itemList[6].text.split('
')[7].strip()
43             weight = itemList[7].text
44             resultTable[i][0] = classname
45             resultTable[i][1] = float(score)
46             resultTable[i][2] = float(weight)
47             print classname.rjust(15),'	',score.rjust(3),'	',weight.rjust(3)
48             i += 1
49             # print '%10s' % classname,'%-3s' % score.split('
')[7],'	',weight
50         # 计算GPA
51         sumGPA = 0
52         sumWeight = 0
53         for k in range(14):
54             sumWeight += resultTable[k][2]
55             sumGPA += resultTable[k][1] * resultTable[k][2]
56             gpa = sumGPA / sumWeight
57 
58         print u'
学分绩点为:',gpa
59 
60 if __name__ == '__main__':
61     # ouc_stu = OUC()
62     print '================ Welcome ===================='
63     print u'Please enter your login messages:'
64     username = input('username:')
65     password = input('password:')
66     print u'Waiting...'
67     ouc_stu = OUC(username,password)
68     ouc_stu.getPage()
原文地址：http://www.cnblogs.com/leonwen/p/5730874.html
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