遇到dubbo接口 ，用python怎么写模拟请求呢？

# -*- coding=utf-8 -*-
import json
import telnetlib
import socket


class dubbo(telnetlib.Telnet):
    promat = 'dubbo>'

    def __init__(self, host=None, port=0):
        telnetlib.Telnet.__init__(self, host, port, timeout=socket._GLOBAL_DEFAULT_TIMEOUT)
        self.write(b'\n')

    def command(self, flag, str_=""):
        data = self.read_until(flag.encode())
        self.write(str_.encode() + b"\n")
        return data

    def invoke(self, service_name, method_name, arg):
        command_str = "invoke {0}.{1}({2})".format(
            service_name, method_name, json.dumps(arg))
        self.command(dubbo.promat, command_str)
        data = self.command(dubbo.promat, "")
        data = json.loads(data.decode('gbk', errors='ignore').split('\n')[0].strip())
        return data


先来是dubbo接口封装的公共函数  写好了之后 

conn = dubbo('IP', 端口)
json_data = {请求参数}
result = conn.invoke(
    "dubbo接口地址",
    "request",
    json_data
)
print result