- in File winusbpy.py line 12 the letter 'L' in the GUID throws exception.
- in the same file the indentation rules are violated from line 176.
these two issues make it not importable in the source code. Please fix it. I uploaded my corrected version as attachment.
winusbpy.txt
However the API seems not to work for me, because it does not find any of my USB devices which I can have access in C++ using the WinUsbApi.