old_contents: import multiprocessing
  import unicornhat
  import importlib
  import sys
  import os
  
  
  class State:
      ''' Handles the Unicorn HAT state'''
  
      def __init__(self):
          self.process = None
  
      def start_program(self, name, params={}):
          self.stop_program()
  
          if "brightness" in params:
              unicornhat.brightness(float(params["brightness"]))
  
          if "rotation" in params:
              unicornhat.rotation(int(params["rotation"]))
  
          program = importlib.import_module("app.programs." + name)
          self.process = multiprocessing.Process(target=program.run, args=(params,))
          self.process.start()
  
      def stop_program(self):
          if self.process is not None:
              self.process.terminate()
          unicornhat.show()
  
  
  state = State()
new_contents: import multiprocessing
  import unicornhat
  import importlib
  import sys
  import os
  
  
  class State:
      ''' Handles the Unicorn HAT state'''
  
      def __init__(self):
          self._process = None
  
      def start_program(self, name, params={}):
          self.stop_program()
  
          if "brightness" in params:
              unicornhat.brightness(float(params["brightness"]))
  
          if "rotation" in params:
              unicornhat.rotation(int(params["rotation"]))
  
          program = importlib.import_module("app.programs." + name)
          self._process = multiprocessing.Process(target=program.run, args=(params,))
          self._process.start()
  
      def stop_program(self):
          if self._process is not None:
              self._process.terminate()
          unicornhat.show()
  
  
  state = State()
subject: Mark process member variable for internal use