PyVISA: Control your instruments with Python PyVISA is a Python package that enables you to control all kinds of measurement devices independently of the interface (e.g. GPIB, RS232, USB, Ethernet). As an example, reading self-identification from a Keithley Multimeter with GPIB number 12 is as easy as three lines of Python code: >>> import pyvisa >>> rm = pyvisa.ResourceManager() >>> rm.list_reso