Python -> pyautogui and special characters for DOSBox 0.74

Question

I transfer data from an Excel file to DOSBox with python. Letters ä,ö;ü,ß are not written in Dosbox. With my own physical keyboard I can write these letters.

1. Question: Does anyone know how I can do this with python?

2nd question: Then I tried to find a solution with ALT+... unfortunately that doesn't work either.

pyautogui.keyDown('alt')   #altgr doesn't work too
pyautogui.press('1')
pyautogui.press('4')
pyautogui.press('8')
pyautogui.keyUp('alt')

3. Down arrow doesn't work either.

`pyautogui.press('down')`

Anyone have an idea or is this not possible?

Thank you!

I asked ChatGPT, I'm suggested to try it via a subprocess, but that doesn't work because a new console opens for each command espite -noconsole