python实现下载文件的三种方法_python

import requests

print "downloading with requests"

url = 'http://www.jb51.net/test/demo.zip'

r = requests.get(url)

with open("demo3.zip", "wb") as code:

   code.write(r.content)

f = urllib2.urlopen(url)

with open("demo2.zip", "wb") as code:

  code.write(f.read())