Error with running IronPython 3.4.1 on existing Windows .NET4.7.2 project about ironpython3

[iankona]

运行环境：戴森球计划dspgame
BepInEx5.4.23.1 + IronPython3.4.1+net4.6.2
[Message: BepInEx] BepInEx 5.4.23.1 - DSPGAME (2024/6/4 11:31:23)
[Info : BepInEx] Running under Unity v2018.4.12.5889476
[Info : BepInEx] CLR runtime version: 4.0.30319.17020

i meet the same wrong
i use import deal with it, not use scope:
pyfile global a =0 // print(a) --> 0
void Start()
engine.Execute("import manage; manage.Start()"); // a +=1 print(a) --> 1
void Update()
engine.Execute("import manage; manage.Update()"); // a +=1 print(a) --> 2
void OnGUI()
engine.Execute("import manage; manage.OnGUI()"); // a +=1 print(a) --> 3
使用python模块脚本的全局单一特性，存储数据，从而保证数据的一致性。
（不管import多少次，只有第1次import是生效的，而其他import则是调用)

===============================================

using System;
using System.Collections;

using UnityEngine;

using BepInEx;
using HarmonyLib;

using IronPython.Hosting;
using IronPython.Runtime;

using System.IO;
using Microsoft.Scripting.Runtime;
using Microsoft.Scripting;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using Microsoft.Scripting.Hosting;
using System.Reflection;
using System.Runtime.Remoting.Contexts;

namespace IronPython3Mod
{
[BepInPlugin(GUID, NAME, VERSION)]
[BepInProcess(GAME_PROCESS)]
public class Plugin : BaseUnityPlugin
{
public const string GUID = "cn.zhufile.dsp.zhu_ironpython3_mod";
public const string NAME = "IronPython3Mod";
public const string VERSION = "1.0.7";
private const string GAME_PROCESS = "DSPGAME.exe";

    public static ScriptEngine engine = null;
    public static float time = 0;

    public void Start()
    {
        engine = Python.CreateEngine();// Create a new IronPython engine
        // engine.Execute("print('111111111111111111')"); // OK， it work！！！

        // Set up the search paths for the Python script
        var searchPaths = engine.GetSearchPaths();
        searchPaths.Add("BepInEx\\plugins\\IronPython3\\net462\\Lib");
        searchPaths.Add("BepInEx\\plugins\\IronPython3\\mod");
        searchPaths.Add("BepInEx\\plugins\\IronPython3\\modmanage");
        engine.SetSearchPaths(searchPaths);

        // 运行python脚本文件，加载mod
        engine.Execute("import manage; manage.Start()");

    }

    public void Update()
    {
        time += Time.deltaTime; // 每帧的时间间隔，单位秒
        if (time > 30)
        {
            time = 0;
            engine.Execute("import manage; manage.Update()");
        }

    }

    public void OnGUI()
    {
        engine.Execute("import manage; manage.OnGUI()");
    }

}

==============================================
anather, there are many different in ipy.exe and bepinex‘s ironpython3 engine
for example,
a = os.listdir(".") do it in ipy.exe, but in bepinex‘s ironpython3 engine is wrong ！！！