import urllib.request
import re#获得当前页面的页数page_name
def get_pagenum(url):req = urllib.request.Request(url)req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36')res = urllib.request.urlopen(req)html = res.read().decode('utf-8')p = r'<span class="current-comment-page">[^"]+</span>'temp = re.search(p,html)page_num = temp.group()[36:39]return page_num#将此页面上的图片写入我们的mm文件夹中
def get_img(page_url):req = urllib.request.Request(page_url)req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36')res = urllib.request.urlopen(req)html = res.read().decode('utf-8')p = r'<img src="([^"]+\.jpg)"'url_list = re.findall(p,html)num = 0for each in url_list:file = open('C:/Users/lenovo/Desktop/mm/'+each[-8:]+'.jpg','wb')if each[0:5] == 'http:':res = urllib.request.urlopen(each)else:res = urllib.request.urlopen('http:'+each)file.write(res.read())file.close()#只能直接运行
if __name__ == '__main__':url = 'http://jandan.net/ooxx/'page_num = get_pagenum(url)for i in range(10):   #抓取了十个页面上美女图片page_url = url + 'page-'+str(page_num)+'#comments'get_img(page_url)page_num = int(page_num) - 1#下面是写正则的时候方便看所以粘贴过来的连接
#<img src="//ws3.sinaimg.cn/mw600/006wUWIjgy1fgxrw8goikj30hs0qodh7.jpg" style="max-width: 480px; max-height: 750px;">#http://jandan.net/ooxx/page-143#comments#<span class="current-comment-page">[141]</span>#  http://wx3.sinaimg.cn/mw600/661eb95cly1fgioxk7mk3j20xc1e01f1.jpg#<img src="//wx1.sinaimg.cn/mw600/006wUWIjgy1fgxg2yj5f3j30g70s6dgw.jpg" style="max-width: 480px; max-height: 750px;">