code: def is_course_complete(last_update):
      
      rv = False
      if last_update >= 0:
          delta = time.time() - last_update
          max_delta = total_seconds(datetime.timedelta(days=30))
          if delta > max_delta:
              rv = True
      return rv
docs: Determine is the course is likely to have been terminated or not.
  
      We return True if the timestamp given by last_update is 30 days or older
      than today's date.  Otherwise, we return True.
  
      The intended use case for this is to detect if a given courses has not
      seen any update in the last 30 days or more.  Otherwise, we return True,
      since it is probably too soon to declare the course complete.