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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"SerializationException when PythonEngine.Shutdown()","articleBody":"### Environment\r\n\r\n-   Pythonnet version: 3.0.1\r\n-   Python version: 3.8\r\n-   Operating System: win11\r\n-   .NET Runtime: 4.6.1\r\n\r\n### Details\r\n\r\n-   Describe what you were trying to get done.\r\n\r\n    my python code listed as following:\r\n```python\r\nimport datetime\r\nimport csv\r\nimport clr\r\nclr.AddReference('CyberStone.Atp.Storage')\r\nfrom CyberStone.Atp.Storage.Query import QueryCondition\r\nfrom CyberStone.Atp.Modules.Analysis.Models import SearchResModel\r\nfrom System.Collections.Generic import List\r\nfrom System import String, DateTime\r\n\r\n#define query condition\r\ncondition = QueryCondition()\r\ncondition.QueryValueVariables = List[String]()\r\ncondition.QueryValueVariables.Add('Decoder/projectValue')\r\ncondition.RowMax = 100\r\ncondition.StartTime = DateTime(2018, 8, 2)\r\ncondition.EndTime = DateTime(2018, 8, 3)\r\n\r\n#start query database\r\nresult = dataAnalysis.GetSearchDataSet(condition)\r\nprint(result.Count) \r\n```\r\n\r\nwhen I execute PythonEngine.Shutdown(), there is exception. do you know how to resolve it?\r\n\r\nSystem.Runtime.Serialization.SerializationException\r\n  HResult=0x8013150C\r\n  Message=程序集“CyberStone.Atp.Modules.Analysis, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null”中的类型“CyberStone.Atp.Modules.Analysis.Models.SearchResModel”未标记为可序列化。\r\n  Source=mscorlib\r\n  StackTrace:\r\n   at System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type)\r\n   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)\r\n   at System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context)\r\n   at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo()\r\n   at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Type objectType, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, SerializationBinder binder)\r\n   at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteArray(WriteObjectInfo objectInfo, NameInfo memberNameInfo, WriteObjectInfo memberObjectInfo)\r\n   at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write(WriteObjectInfo objectInfo, NameInfo memberNameInfo, NameInfo typeNameInfo)\r\n   at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck)\r\n   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck)\r\n   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph)\r\n   at Python.Runtime.RuntimeData.Stash()\r\n   at Python.Runtime.Runtime.Shutdown()\r\n   at Python.Runtime.PythonEngine.Shutdown()\r\n   at CyberStone.Atp.Infrastructure.Python.PythonNetScriptRunner.Run(String scripttext, PythonNetScope userscope) in D:\\repo\\ATP56\\CSharp\\Base\\CyberStone.Atp.Infrastructure\\PythonNet\\PythonNetScriptRunner.cs:line 211\r\n   at CyberStone.Atp.Modules.TestScript.PythonNet.ViewModels.PythonNetDocument.\u003c\u003ec__DisplayClass25_0.\u003cRunTest\u003eb__0() in D:\\repo\\ATP56\\CSharp\\Modules\\CyberStone.Atp.Modules.TestScript\\PythonNet\\ViewModels\\PythonNetDocument.cs:line 220\r\n   at System.Threading.Tasks.Task.Execute()\r\n\r\n\r\n                PythonEngine.Initialize();\r\n                try\r\n                {\r\n                    using (PythonRuntime.Py.GIL())\r\n                    {\r\n                        // Capture the output in a StringWriter\r\n                        using (var outputWriter = new StringWriter())\r\n                        {\r\n                            // Redirect Python's sys.stdout to the custom StringWriter\r\n                            var originalOutput = Console.Out;\r\n                            Console.SetOut(outputWriter);\r\n\r\n                            dynamic sys = Py.Import(\"sys\");\r\n                            dynamic pythonIO = Py.Import(\"io\");\r\n\r\n                            // Redirect Python's sys.stdout to a custom StringIO object\r\n                            dynamic originalStdout = sys.stdout;\r\n                            dynamic captureStream = pythonIO.StringIO();\r\n                            sys.stdout = captureStream;\r\n\r\n                            try\r\n                            {\r\n                                PyObject p = PythonEngine.Compile(_scripttext);\r\n\r\n                                _scope.CreatePythonNetScope();\r\n                                _scope.Scope.Exec(_scripttext);\r\n                                //PythonRuntime.PythonEngine.Exec(_scripttext);\r\n                            }\r\n                            catch (Exception ex)\r\n                            {\r\n                                capturedOutput += $\"{ex.Message};\";\r\n                            }\r\n                            finally\r\n                            {\r\n                                // Reset sys.stdout to the original value\r\n                                sys.stdout = originalStdout;\r\n                            }\r\n\r\n                            // Get the captured output from the StringIO object\r\n                            capturedOutput += captureStream.getvalue().ToString();\r\n                        }\r\n                    }\r\n                }\r\n                catch(Exception ex)\r\n                {\r\n                }\r\n                finally\r\n                {\r\n                    PythonEngine.Shutdown();\r\n                }\r\n\r\n\r\n-   What commands did you run to trigger this issue? If you can provide a\r\n    [Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve)\r\n    this will help us understand the issue.\r\n\r\n```python\r\n    print('TODO')\r\n```\r\n\r\n-   If there was a crash, please include the traceback here.\r\n\r\n```python\r\n    print('TODO')\r\n```\r\n","author":{"url":"https://github.com/muler415","@type":"Person","name":"muler415"},"datePublished":"2023-08-14T23:55:23.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/2221/pythonnet/issues/2221"}