title: How to trigger Python script on Raspberry Pi from Node-Red
body: <p>I'm using Node-Red, hosted on a Raspberry Pi for an IoT project.</p>
  
  <p>How do I trigger a Python script that is on the raspi from Node-Red? I want to run a script that updates the text on an Adafruit LCD shield which is sitting on the Pi</p>
  
  <p>Should I be looking to expose the Python script as a web service somehow?</p>
  
  <p>I'm using a Raspberry Pi B+</p>