模拟登录后抓取成绩,计算绩点。
# -*- coding: utf-8 -*- import urllib
import urllib2
import cookielib
import re
import string #绩点运算
class SDU: #类的初始化
def __init__(self):
#登录URL
self.loginUrl = 'http://jwxt.sdu.edu.cn:7890/pls/wwwbks/bks_login2.login'
#成绩URL
self.gradeUrl = 'http://jwxt.sdu.edu.cn:7890/pls/wwwbks/bkscjcx.curscopre'
#CookieJar对象
self.cookies = cookielib.CookieJar()
#表单数据
self.postdata = urllib.urlencode({
'stuid':'',
'pwd':'xxxxx'
})
#构建opener
self.opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(self.cookies))
#学分list
self.credit = []
#成绩list
self.grades = [] def getPage(self):
req = urllib2.Request(
url = self.loginUrl,
data = self.postdata)
result = self.opener.open(req)
result = self.opener.open(self.gradeUrl)
#返回本学期成绩页面
return result.read().decode('gbk') def getGrades(self):
#获得本学期成绩页面
page = self.getPage()
#正则匹配
myItems = re.findall('<TR>.*?<p.*?<p.*?<p.*?<p.*?<p.*?>(.*?)</p>.*?<p.*?<p.*?>(.*?)</p>.*?</TR>',page,re.S)
for item in myItems:
self.credit.append(item[0].encode('gbk'))
self.grades.append(item[1].encode('gbk'))
self.getGrade() def getGrade(self):
#计算总绩点
sum = 0.0
weight = 0.0
for i in range(len(self.credit)):
if(self.grades[i].isdigit()):
sum += string.atof(self.credit[i])*string.atof(self.grades[i])
weight += string.atof(self.credit[i]) print u"本学期绩点为:",sum/weight sdu = SDU()
sdu.getGrades()