Summary

I tried to use RustPython in a windows GUI app, so that python code is running in the background and the result is displayed in a GUI. Unfortunately, it seems that stdin/stdout is required. I get a essential initialization failed panic error

 Error in sys.excepthook:
lost sys.stderr
RuntimeError: lost sys.stderr
Original exception was:
lost sys.stderr
OSError: (9, 'Das Handle ist ungültig. (os error 6)')

thread 'main' panicked at C:\Users\MyUser\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\rustpython-vm-0.4.0\src\vm\mod.rs:334:30:
essential initialization failed

I also have a sample tauri application here that can replicate the issue:
https://github.com/marcomq/tauri-plugin-python/tree/main/examples/plain-javascript

The gui is preventing the console with

#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

I could also uncomment this line, but this would then always show a console in the background of the windows app, which is kind of a very ugly workaround.
I will check if I can maybe fix it locally, but I just wanted to create this issue first for documentation.

Expected

It would be nice if it wouldn't be required to have a console, similar to wasm/wasi mode.

Actual

The issue can only be replicated on windows release without console, so there is probably no real error visible and the application just doesn't start up.

Python Documentation