python爬取慕课视频-python爬虫：爬取网站视频

新建一个py文件，代码如下：

#!/usr/bin/python

# -*- coding: UTF-8 -*-

import urllib,re,requests

import sys

reload(sys)

sys.setdefaultencoding('utf-8')

url_name = [] #url name

def get():

#获取源码

hd = {"User-Agent":"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"}

url = 'http://www.budejie.com/video/'

html = requests.get(url,headers=hd).text

url_content = re.compile(r'(

.*?)',re.S) #编译

url_contents = re.findall(url_content,html) #匹配

for i in url_contents:

#匹配视频

url_reg = r'data-mp4="(.*?)"' #视频地址

url_items = re.findall(url_reg,i)

#print url_items

if url_items: #判断视频是否存在

name_reg = re.compile(r'(.*?)',re.S)

name_items = re.findall(name_reg,i)

#print name_items[0]

for i,k in zip(name_items,url_items):

url_name.append([i,k])

print i,k

for i in url_name: #i[1]=url i[0]=name

urllib.urlretrieve(i[1],'video\%s.mp4' % (i[0].decode('utf-8')))

if __name__ == "__main__":

get()

在 py 文件下新建一个 video 文件夹，执行后结果如下：

在 video 文件夹可以看到下载好的视频

注意报错：

UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-9: ordinal not in range(128)

解决：

import sys

reload(sys)

sys.setdefaultencoding('utf-8')