Log Environment Variables - Pythonpath

Hi RF enthusiasts,
I want to improve my coding skills especially at importing my libraries.
I currently use relative path like
Library …/…/…/Libraries/VISA/Agilent33512B_WaveformGenerator.py
I was wondering, if I extend my environmental path variable with this path, if I could get away of this …/…/.
But I couldn’t.
I tried
Log Environment Variables
and under PYTHONPATH I get something like that:
PYTHONPATH = ;c:\Users\Ubormes.vscode\extensions\robocorp.robotframework-lsp-
I dont understand this output.
Can you guys explain it to me?

I use VSCode as IDE with RF extension. I also added manually the pythonpath variables in extension settings without any impact.

Kind regards