# 引入clr运行库
import clr

# 添加对cloud插件开发的常用组件的引用
clr.AddReference('System')
clr.AddReference('System.Core')
clr.AddReference('System.Data')
clr.AddReference("System.Web.Extensions")
clr.AddReference('Kingdee.BOS')
clr.AddReference('Kingdee.BOS.DataEntity')
clr.AddReference('Kingdee.BOS.Core')
clr.AddReference('Kingdee.BOS.App')
clr.AddReference('Kingdee.BOS.App.Core')
clr.AddReference('Kingdee.BOS.ServiceHelper')
clr.AddReference('Kingdee.BOS.ServiceFacade.Common')
clr.AddReference('Newtonsoft.Json')
# 导入cloud基础库中的常用实体对象（分命名空间导入，不会递归导入）
from Kingdee.BOS import *
from Kingdee.BOS.Core import *
from Kingdee.BOS.Core.DependencyRules import *
from Kingdee.BOS.Core.Bill import *
from Kingdee.BOS.Core.DynamicForm.PlugIn import *
from Kingdee.BOS.Core.DynamicForm.PlugIn.ControlModel import *
from Kingdee.BOS.Core.DynamicForm.PlugIn.Args import *
from Kingdee.BOS.Core.Metadata.FormElement import *
from System import *
from System.Data import *
from System.Threading import *
from System.Text import *
from System.Collections.Generic import *
from System.Linq import *
from System.IO import *
from System.Net import *
from System.Security.Cryptography import *
from System.Web.Script.Serialization import *
from System.Collections.Generic import Dictionary
from Kingdee.BOS.App.Data import *
from Kingdee.BOS.ServiceHelper import *
from Kingdee.BOS.Core.DynamicForm import *
from Kingdee.BOS.Core.Metadata.EntityElement import *
from Kingdee.BOS.Core.Metadata.FieldElement import *
from Kingdee.BOS.Orm.DataEntity import *
from Kingdee.BOS.ServiceFacade import *
from Newtonsoft.Json import *
from Newtonsoft.Json.Linq import *

j = JsonSerializerProxy(Encoding.UTF8, False)
ly_param = {
    "url": "http://192.168.0.132:8085/ly/testapi"
}


# 单据体按钮点击事件；其余地方的点击事件类似，这里就不一一例举
def EntryBarItemClick(e):
    key = e.BarItemKey.ToUpperInvariant();  # 菜单标识大写
    if (key == "PYIV_tbButton".ToUpperInvariant()):
        # 对象转json字符串
        json_str = j.Serialize(param)
        # 第一个请求地址、第二个具体的json参数
        result = post(ly_param["url"], json_str)
        # this.View.ShowMessage(result)
        if result is None:
            this.View.ShowErrMessage('''中间服务调用接口调用失败!''')
            return
        # 把响应的json字符串转换为json对象
        result = JObject.Parse(result)
        if result["Code"] != "0":
            this.View.ShowErrMessage('''错误代码{0}!，信息：{1}'''.format(result["Code"], result["Message"]))
            return


def get(url):
    try:
        webRequest = WebRequest.Create(url)
        webRequest.Method = "GET"
        webResponse = webRequest.GetResponse()
        stream = webResponse.GetResponseStream()
        streamReader = StreamReader(stream, Encoding.GetEncoding("utf-8"))
        result = streamReader.ReadToEnd()
        return result
    except:
        return None


def post(url, postdata):
    try:
        encode = "UTF-8"
        webRequest = HttpWebRequest.Create(url)
        webRequest.Method = "POST"
        webRequest.ContentType = "application/json"
        paraUrlCoded = postdata
        payload = Encoding.GetEncoding(encode.ToUpper()).GetBytes(paraUrlCoded)
        webRequest.ContentLength = payload.Length
        writer = webRequest.GetRequestStream()
        writer.Write(payload, 0, payload.Length)
        writer.Close()
        response = webRequest.GetResponse()
        sr = StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encode))
        res = sr.ReadToEnd()
        return res
    except:
        return None

具体的get/post方法自行提取(方法来源于社区，具体文章找不到了。如有侵权还望告知，【emoji】)。

感谢大佬提供的python学习资料：https://wenku.my7c.com/people/name-2147471799?productLineId=1&lang=zh-CN