016讲五行爬虫网站图片，视频代码

一图片代码

import urllib.request

import re

for page in range(254,256):

 req = urllib.request.Request("http://jandan.net/ooxx/page-%s#comments"%page)        #请求

req.add_header("user-agent","Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.104 Safari/537.36
Core/1.53.3226.400 QQBrowser/9.6.11681.400")

for i in re.findall(r'img src="(.*?)"',urllib.request.urlopen(req).read().decode('utf-8')):        #匹配

        j = "http:"+ i

        file_name =i.split("/")[-1]

        urllib.request.urlretrieve(j,'正则下载/%s'%file_name)                
    #下载的方法

2.视频代码详解

import urllib.request

import re

def getvideo(page):

    req = urllib.request.Request("http://www.budejie.com/video/%s"%page)      
 #请求

    req.add_header("User-Agent","Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.104 Safari/537.36 Core/1.53.3226.400 QQBrowser/9.6.11681.400")

    html = urllib.request.urlopen(req).read().decode('utf-8')                  
#响应与解码

   reg = r'data-mp4="(.*?)"'

    for i in re.findall(reg,html):                                            
 #匹配

        #print('正在下载：%s'% i)

        file_name =i.split("/")[-1]        

        urllib.request.urlretrieve(i,'爬虫视频/%s'%file_name)                
 #下载的方法

for i in range(1,11): 

    getvideo(i)