利用urllib2和cookielib模块查询成绩~

懒是人类进步的阶梯！从此查成绩不用手！

思路

用cookielib创建一个cookie的容器
用urllib2.HTTPCookieProcessor(cookie)创建一个cookie处理器
用urllib2.build_opener(processor)创建打开的类（至此，从网站上获取的cookie也一并提交给学校了~）
模拟登录操作，获取cookies
打开成绩页面，观察url中的参数
指定需要查询的成绩

代码

#-*- coding:utf-8 -*-
import urllib2
import cookielib
import re
import string
cookie = cookielib.CookieJar()
handler = urllib2.HTTPCookieProcessor(cookie)
opener = urllib2.build_opener(handler)
def login(us,ps):
    req = urllib2.Request('http://jwgl.ahnu.edu.cn/login/check.shtml',data = 'user=%s&pass=%s&usertype=stu'%(us,ps))
    req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0')
    content = opener.open(req).read()
    if 'fail' in content:
        print u'登录失败...'
        return False
    else:
        print u'登录成功...'
        return True
def getlist(y,st):
    if y == '0':
        year = '0000-0000'
        semester = st
    else:
        yearadd1 = int(y)+1
        year = y+'-'+str(yearadd1)
        semester = st
    req2 = urllib2.Request('http://jwgl.ahnu.edu.cn/query/cjquery/index?action=ok&xkxn=%s&xkxq=%s'%(year,semester))
    req2.add_header('Referer','http://jwgl.ahnu.edu.cn/')
    content = opener.open(req2).read().decode('utf-8')
    if u'平时成绩公示' in content:
        reg = re.compile('<td align="left">(.+?)</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*<td>(.*?)</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*<td>(.*?)</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*</tr>')
    else:
        reg = re.compile('<td align="left">(.+?)</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*<td>(.*?)</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*<td>(.*?)</td>\s*<td>.*?</td>\s*<td>.*?</td>\s*</tr>')
    chengji = re.findall(reg,content)
    if len(chengji)==0:
        print u'并未查询到..请检查参数..'
    class_name = []
    credit = []
    grade = []
    grade2 = []
    for i in chengji:
        class_name.append(i[0])
        credit.append(i[1])
        grade.append(i[2])
    for i in grade:
        if i =='':
            i = u'暂无成绩'
            grade2.append(i)
        else:
            grade2.append(i)
    return [class_name, grade2, credit]
def display(result):
    name = result[0]
    grade = result[1]
    credit = result[2]
    for i in range(len(name)):
        str1 = u'课程名称:%s' % (name[i])
        str2 = u'成绩:%s'% (grade[i])
        str3 = u'学分:%s\n'% (credit[i])
        print str1
        print str2
        print str3
u = raw_input(u'输入用户:')
p = raw_input(u'输入密码:')
if login(u,p) is True:
    y = raw_input(u'输入要查询的年份(例如：0为全部学年.....2014为2014-2015年...):')
    st = raw_input(u'输入学期(0为全学期-1为上学期-2为下学期)')
    print u'正在努力查询中...'
    result = getlist(y,st)
    display(result)
else:
    print u'你输入的用户名和密码有错..'

一些注意事项

成绩查询页面会判断Referer(你从哪个页面跳转过来的)
没了..