PyUSB: reading from a USB device

Question

This is an updated and shortened question.

Communicating with a USB-device should be easy via PyUSB. So, I\'m trying to read from a USB-device (oscilloscope) using PyUSB

Answer 1

msg = '*IDN?'

This is not a complete SCPI command: It is missing the newline \n character at the end.

That is also why the device was not able to send an answer via USB.