Error in sys.excepthook

[pmelange]

While using labgrid-client on a SysfsGPIO resouce using the io high/low/get operations, the following is displayed:

labgrid-client -p gpio io get
digital IO for place gpio is low
Error in sys.excepthook:

Original exception was:

Found while using f81f479 on a raspberry pi 4.

While the results of the high/low/get commands work as expected, the extra error message is not expected and does not provide the user with any information as to how the error happened.

[pmelange]

same as #1544