Environment

• Pythonnet version: 3.0.4
• Python version: 3.11
• Operating System: Windows 10
• .NET Runtime: .NET8/netstandard 2.0

Details

Hi, I am facing a known issue with PythonEngine.Shutdown() that should have been solved. I saw looking around here that many others have had a problem while using the Shutdown function since it caused an exception due to the deprecation of BinaryFormatter in .NET8.
Here the exception I am getting:

System.NotSupportedException: 'BinaryFormatter serialization and deserialization are disabled within this application. Seehttps://aka.ms/binaryformatter for more information.'

I am aware of the workarounds already provided such as the management of "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization" parameter, if I manually manage this set the issue is not presenting anymore, but it seems to me that is more of a patch than a fix.

Since .NET9 will totally get rid of BinaryFormatter, and since I read in other threads that this issue should have been fixed, I was wondering if I was missing something or if the only way to manage this is by manually managing the serialization parameter.

Here follows the code I am using (in a project that targets netstandard2.0, while it is called by a .NET8 project).

usingPython.Runtime;usingSystem;usingSystem.IO;namespaceExecutePython{publicclassClass1{stringfilePath;publicClass1(stringFilePath){filePath=FilePath;Initialize();}publicvoidInitialize(){stringpythonDll=@"C:\Users\MyUser\AppData\Local\Programs\Python\Python311\python311.dll";Environment.SetEnvironmentVariable("PYTHONNET_PYDLL",pythonDll);PythonEngine.Initialize();}publicvoidExecutePython(){stringpyCode=File.ReadAllText(filePath);using(Py.GIL()){try{PythonEngine.Exec(pyCode);}catch(Exceptionex){//log error}}try{//AppContext.SetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization", true);PythonEngine.Shutdown();//AppContext.SetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization", false);}catch(Exceptione){}}}}

The code that is executing correctly in my python script is a sample code, in my case it just pops up a window to see that the script is executing correctly