[python]通過urllib2設定代理通路網址

#!/usr/bin/env python

import urllib2

# change followings before use

user = 'foo'

passwd = 'bar'

proxyserver = '1.2.3.4:5'

url = 'http://www.google.com/'

def proxy1():

# work

proxy = 'http://%s:%s@%s' % (user, passwd, proxyserver)

opener = urllib2.build_opener( urllib2.ProxyHandler({'http':proxy}) )

urllib2.install_opener( opener )

sContent = urllib2.urlopen(url)

print sContent.read()

def proxy2():

# work for someone, but not for me

passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()

passmgr.add_password('realm', proxyserver, user, passwd)

authinfo = urllib2.ProxyBasicAuthHandler(passmgr)

proxy = 'http://%s' % proxyserver

opener = urllib2.build_opener(urllib2.ProxyHandler( {'http':proxy} ), authinfo)

urllib2.install_opener(opener)

def proxy3():

authinfo = urllib2.HTTPBasicAuthHandler()

authinfo.add_password('realm', proxyserver, user, passwd)

在linux系統中，假設urllib2設定的代理不好用能夠試試環境變量：

export http_proxy='protocol://user:passwd@proxyserver:port'

export https_proxy='protocol://user:passwd@proxyserver:port'

比方通過代理上傳appengine檔案，其SDK中的rpc不提供代理設定，就能夠用這招。