title: Set variable of a running Python script
body: <p>How can I access a running Python script's variable? Or access a function, to set the variable. I want to access it from the command line or from another Python script, that doesn't matter.</p>
  
  <p>For example,
  I have one script running run_motor.py, with a variable called mustRun. When the user pushes the stop button it should access the variable mustRun to change it to false.</p>