Embedded IronPython debugging with breakpoints

Question

Our codebase is written mostly in C# with some scripting capabilities using IronPython 3.4. Until recently we based the project on the outdated .Net Framework 4.8 but made the move to .Net 8 recently.

One odd thing is bugging us: With .Net Framework as a target we could load the python script files in Visual Studio and set breakpoints which nicely triggered when the script was executed. After the shift to .Net 8 this does not work any longer.

I created a minimal working example to confirm this behavior:

using IronPython.Hosting;
using Microsoft.Scripting.Hosting;
using Microsoft.Scripting.Runtime;
using System;
using System.Collections.Generic;

namespace ScriptTest
{
    internal class Program
    {
        static void Main(string[] args) {
            ScriptEngine pythonEngine = null;
            ScriptScope pythonScope = null;

            Dictionary<string, object> options = new Dictionary<string, object>();
            options["Debug"] = ScriptingRuntimeHelpers.True;

            pythonEngine = Python.CreateEngine(options);
            pythonScope = pythonEngine.CreateScope();

            ScriptSource pythonSrc = pythonEngine.CreateScriptSourceFromFile(@".\Test.py");
            CompiledCode compiled = pythonSrc.Compile();
            compiled.Execute(pythonScope);
        }
    }
}

with the following very simple Test.py file:

print('Test')

One thing I noticed is that with the .Net Framework version a symbol "file" called Snippets.debug.scripting is loaded a soon as the Python script is ececuted. This does not happen in the .Net 8 version.

Any ideas how to get breakpoints working with .Net 8? Maybe this is just some Visual Studio setting but I found not clue yet.

Answer 1

Do you mean the breakpoints in your Python file (Test.py) not hit with.Net8?

If yes, I suggest you check whether you have enabled Enable Just My Code. Please go =>Debug=>Options=>Uncheck Enable Just My Code.

If the uncheck Enable Just My Code not help, please go tools->Import/Export Settings->reset all settings, then uncheck the Enable Just My Code again to see if the issue persists.

Update

Here is my test result:

Env:

IronPython(3.4.1)
Visual Studio 2022(17.10.5)
a ClassLibrary(c#) with .NET8.0

Based on my test, the Python script file and snippets.debug.scripting can be loaded in Visual Studio. The Test.py file can print "test" fine. Please check if I missed something. It would be better if you share where you set breakpoints.