python http请求设置代理

proxy_info = {‘host’: ‘ip’,
‘port’: port,
‘user’: ‘xxx’,
‘pass’: ‘xxx’
}
proxy_support = urllib2.ProxyHandler({“http”: “http://%(user)s:%(pass)s@%(host)s:%(port)d” % proxy_info})
opener = urllib2.build_opener(proxy_support)
urllib2.install_opener(opener)
req = urllib2.Request(url=’%s%s%s’ % (baseUrl, ‘?’, params))
res = urllib2.urlopen(req).read()