new_contents: # -*- coding: utf-8 -*-
  from time import sleep
  from threading import Thread
  
  
  class Poller(Thread):
      def __init__(self, gui, delay=5):
          if delay < 1:
              delay = 1
  
          self.gui = gui
          self.delay = delay
          self.is_running = True
          self.counter = 0
          super(Poller, self).__init__()
  
      def run(self):
          while self.is_running:
              sleep(0.1)
              self.counter += 0.1
              if self.counter >= self.delay * 60:
                  self.gui.async_refresher(force=True)
                  self.counter = 0
  
subject: Add Poller class