python send 非json的data

参考:https://stackoverflow.com/questions/9746303/how-do-i-send-a-post-request-
as-a-json

如果是json的

req = urllib2.Request(self._url, data_jsondumps, {'Content-Type': 'application/json'}

非json的

 req = urllib2.Request(self._url)

 req.add_data(urllib.urlencode(data))  #, {'Content-Type': 'application/json'})