爬视频保存

保存视频资源
 1 import requests,os
 2 kv={'user-agent':'Mozilla/6.0'}
 3 root="D:/pics/"
 4  
 5 url="https://v.stu.126.net/mooc-video/nos/mp4/2017/02/28/1005855330_c19061df10ee4cd69496dba4292e9ea3_shd.mp4?ak=285ea3e4dadf82f0450503b24518d5679cdf68ccbb7c2011693b179b27153140698691431388c23472d118fc0d79340ceff6a55d15491982836e42383e13363eec6958477c8e90f2fc976eed060cb9b81e46d140b7b30f910299bee40b26a5c2d9e1e3c44585e5de5b539ccdbe8423a821b91261e44e538d2765af73aa008299a7f5cc498d43fe59a782bc973c30c066b767da1f870bc890754ea6567cb70ca9830b67d08aac63e1ac0c534090a89323f6fd9d4e9030d5d8cb0cb4b5fcb8e77c"
 6 path=root+url.split('/')[-1].split('?')[0]
 7 try:
 8     if not os.path.exists(root):
 9         os.mkdir(root)
10     if not os.path.exists(path):
11         r=requests.get(url)
12     else:
13         print("文件已存在")
14     with open(path,'wb') as f:
15         f.write(r.content)
16         f.close()
17     print('文件保存成功')
18  
19 # r.raise_for_status()
20 # r.encoding=r.apparent_encoding
21 # print(r.text[:1000])
22 except Exception as e:
23     print('爬取失败',e)
灵活应用split和os，并且养成检错的习惯