python下载文件

import urllib
import urllib2
import requests

url = "http://www.blog.pythonlibrary.org/wp-content/uploads/2012/06/wxDbViewer.zip"

print "downloading with urllib"
urllib.urlretrieve(url, "code1.zip")

print "downloading with urllib2"
f = urllib2.urlopen(url)
data =  f.read()
with open("code2.zip", "wb") as code:
    code.write(data)

print "downloading with requests"
r = requests.get(url)
with open("code3.zip", "wb") as code:
    code.write(r.content)

　　requests详见http://www.zhidaow.com/post/python-requests-install-and-brief-introduction