coursera课程视频

#!/usr/bin/env python

# coding=utf-8

import urllib

import urllib2

import cookielib

def setcookie(enable_proxy=False):

    proxy_handler = urllib2.ProxyHandler({"http":'10.13.61.118:6666', "https":'10.13.61.118:6666'}) # 学校代理

    cookiejar = cookielib.LWPCookieJar()

    cookie_support = urllib2.HTTPCookieProcessor(cookiejar)

    debug_hander = urllib2.HTTPHandler(debuglevel=1) # debuglevel=0

    if enable_proxy:

        opener = urllib2.build_opener(cookie_support, proxy_handler, debug_hander)

    else:

        opener = urllib2.build_opener(cookie_support, debug_hander)

    urllib2.install_opener(opener)

def download(fp,tofile):

    outf = open(tofile,'wb')

    c = 0

    print ('Downloading to %s'%(tofile))

    while True:

        s = fp.read(1024*128)

        if len(s) == 0:

            break

        outf.write(s)

        c += len(s)

        print ('Download %d'%(c))

    outf.close()

import os

def main(num=32,  urlhost='https://class.coursera.org/ml-006/lecture/download.mp4?lecture_id='):

    for i in xrange(1,num+1):

        if os.path.exists(str(i)+'.mp4'):continue

        print urlhost+str(i)

        header = {

        'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0',

        'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',

        'Accept-Language':'zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3',

        'Accept-Encoding':'gzip, deflate, sdcn',

        }

        req = urllib2.Request(url=urlhost+str(i), headers=header)

        try:

            fp = urllib2.urlopen(req)

        except:

            continue

        download(fp, str(i)+'.mp4')

        fp.close()

if __name__ == '__main__':

    setcookie()

    main(106, 'https://class.coursera.org/pgm/lecture/download.mp4?lecture_id=')