python https页面读取

#custom HTTPS opener, banner's oracle 10g server supports SSLv3 only
import httplib, ssl, urllib2, socket
class HTTPSConnectionV3(httplib.HTTPSConnection):
    def __init__(self,*args,**kwargs):
        httplib.HTTPSConnection.__init__(self,*args,**kwargs)
         
    def connect(self):
        sock= socket.create_connection((self.host,self.port),self.timeout)
        if self._tunnel_host:
            self.sock= sock
            self._tunnel()
        try:
            self.sock= ssl.wrap_socket(sock,self.key_file,self.cert_file, ssl_version=ssl.PROTOCOL_SSLv3)
        except ssl.SSLError, e:
            print("Trying SSLv3.")
            self.sock= ssl.wrap_socket(sock,self.key_file,self.cert_file, ssl_version=ssl.PROTOCOL_SSLv23)
             
class HTTPSHandlerV3(urllib2.HTTPSHandler):
    def https_open(self, req):
        return self.do_open(HTTPSConnectionV3, req)
# install opener
urllib2.install_opener(urllib2.build_opener(HTTPSHandlerV3()))
 
if __name__== "__main__":
    r= urllib2.urlopen("https://baidu.com")
    print(r.read())