requests实例4:图片的爬取与保存

requests实例4:图片的爬取与保存

代码框架：

 1 # coding=gbk
 2 import requests
 3 import os
 4 url = "http://image.nationalgeographic.com.cn/2017/0211/20170211061910157.jpg"
 5 root = "D://pics//"
 6 path = root + url.split('/')[-1]
 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         with open(path, 'wb') as f:
13             f.write(r.content)
14             f.close()
15             print("文件保存成功")
16     else:
17         print("文件已存在")
18 except:
19     print("爬取失败")