title: External args as variables in SCPI
body: <p>I was wondering if there was a way to pull values through an interface such as cmd and pass them as arguments/variables to a SCPI (standard commands for programmable instruments) script. </p>
  
  <p>What I'm trying to do is to get a Python script interact with the user through the cmd and pull user-input voltages and currents into a SCPI script which will communicate with a programmable power supply. </p>