gistfile1.txt

import requests
requests.post("http://localhost:12306/post", 
  files={
    'key': ('filename', open('file', 'rb')),
  },
  data={"field1":"x", "field2":"y"},
)


qiniu.rpc.Client("localhost:12306").call_with_multipart("/post", [("field1", "x"), ("field2", "y")], files = [("file", "key", "data")])