Getting friendly device names in python

Question

I have an 2-port signal relay connected to my computer via a USB serial interface. Using the pyserial module I can control these relays with ease. However, this is based on

Answer 1

It will be great if this is possible, but in my experience with commercial equipments using COM ports this is not the case. Most of the times you need to set manually in the software the COM port. This is a mess, specially in windows (at least XP) that tends to change the number of the com ports in certain cases. In some equipment there is an autodiscovery feature in the software that sends a small message to every COM port and waits for the right answer. This of course only works if the instrument implements some kind of identification command. Good luck.