Hi,

A variation for #10385

Is your feature request related to a problem? Please describe.

Python 3.8 adds os.add_dll_directory function that takes path string. This is done for security reasons, as Python's DLL path lookup routine has changed. This affects all sorts of DLL's, including NVDA Helper (see #10385) and for this one, liblouis.dll.

Describe the solution you'd like

Use os.add_dll_directory function right before importing liblouis.dll in lous helper module.

Describe alternatives you've considered

Leave it as is, although it breaks Python 3.8 compatibility.

Additional context

See #10384 for details.