code: def watching(w, watch, max_count=None, clear=True):
      
  
      if w and not watch:
          watch = 2
      if watch and clear:
          click.clear()
      yield 0
  
      if max_count is not None and max_count < 1:
          return
  
      counter = 1
      while watch and counter <= (max_count or counter):
          time.sleep(watch)
          counter += 1
          if clear:
              click.clear()
          yield 0
docs: >>> len(list(watching(True, 1, 0)))
      1
      >>> len(list(watching(True, 1, 1)))
      2
      >>> len(list(watching(True, None, 0)))
      1