如果在范围内执行，Ironpython 会丢失堆栈帧

Question

如果我执行这段代码：

    var engine = Python.CreateEngine();
    ScriptScope sc = engine.CreateScope ();
    var ss = engine.CreateScriptSourceFromString ("\ndef f():\n    raise Exception('hello generator')\n    yield 42\n\ndef g():\n    f().next()\n\ng()\n", "a.py");

    try {
        ss.Execute();
    } catch(Exception e) {
        UnityEngine.Debug.Log(engine.GetService<ExceptionOperations>().FormatException(e));
    }

我得到堆栈跟踪：

Traceback (most recent call last):
  File "a.py", line 7, in g
  File "a.py", line 3, in f
Exception: hello generator

但是当我在范围内执行它时：

    var engine = Python.CreateEngine();
    ScriptScope sc = engine.CreateScope ();
    var ss = engine.CreateScriptSourceFromString ("\ndef f():\n    raise Exception('hello generator')\n    yield 42\n\ndef g():\n    f().next()\n\ng()\n", "a.py");

    try {
        ss.Execute(sc);
    } catch(Exception e) {
        UnityEngine.Debug.Log(engine.GetService<ExceptionOperations>().FormatException(e));
    }

我得到缺少堆栈跟踪信息的回溯...

Traceback (most recent call last):
Exception: hello generator

为什么？我怎样才能让它发挥作用？

编辑：经过测试，问题似乎只存在于 Unity 中...

Answer 1

显然整个异常处理在 Unity、Mono 2 和 IronPython 2.6.2 中被破坏了。我在这里发帖以防有人正在寻找对我有用的工作解决方案：

        List<DynamicStackFrame> frames = ExceptionHelpers.AssociateDynamicStackFrames (e);
        if (frames == null)
            frames = new List<DynamicStackFrame> ();

        String text = "Traceback (most recent call first):\n";
        foreach (DynamicStackFrame frame in frames) {
            text += " File \"" + frame.GetFileName () + "\", line " + frame.GetFileLineNumber () + ", in " + frame.GetMethodName () + "\n";
        }
        text += "Exception: " + e.Message;
        Debug.Log (text);
        frames.Clear ();
        ExceptionHelpers.ClearDynamicStackFrames (e);

如果在范围内执行，Ironpython 会丢失堆栈帧

Ironpython missing stack frames if executed in scope

python

ironpython

unity3d