Example of implementing Youku video batch download function using Python

import urllib,urllib2,sys,os from BeautifulSoup import BeautifulSoup import itertools,re url_i =1 pic_num = 1 #自己定义的引号格式转换函数 def _en_to_cn(str): obj = itertools.cycle(['“','”']) _obj = lambda x: obj.next() return re.sub(r"['\"]",_obj,str) if name == 'main': #下载连续3个网页的视频 while url_i <= 3: webContent = urllib2.urlopen("http://news.youku.com/focus/index/_page26716_" + str(url_i) + ".html") data = webContent.read() #利用BeautifulSoup读取视频列表网页数据 soup = BeautifulSoup(data) print "-------------------------Page " + str(url_i) + "-------------------------" #获得相应页面的视频thumbnail和title的list tag_list_thumb = soup.findAll('li','v_thumb') tag_list = soup.findAll('li', "v_title") for item in tag_list: #通过每个thumbnail中的herf导向视频播放页面 web_video_play = urllib2.urlopen(item.a['href']) data_vp = web_video_play.read() #利用BeautifulSoup读取视频播放网页数据 soup_vp = BeautifulSoup(data_vp) #找到“下载”对应的链接 tag_vp_list = soup_vp.findAll('a', id = 'fn_download') for item_vp in tag_vp_list: #将下载链接保存到url_dw中 url_dw = '"' + item_vp['_href'] + '"' print item.a['title'] + ": " + url_dw #调用命令行运行iku下载视频，需将iku加入环境变量 os.system("iku " + url_dw) #保存每个视频的thumbnail for item_thumb in tag_list_thumb: urllib.urlretrieve(item_thumb.img['src'], "E:\\下载视频\\thumbnails\\" + str(pic_num) + "." + _en_to_cn(item_thumb.img['title']) + ".jpg") pic_num += 1 print "--------------------------------------------------------------" print "--------Page " + str(url_i) + "'s video thumbnails have been saved!" url_i += 1