code: def humanize_seconds(total_seconds,
                       frmt='{hours:02d}:{minutes:02d}:{seconds:02d}',
                       negative_frmt=None):
      
      if negative_frmt is None:
          negative_frmt = '<span class="negative-time">-{0}</span>'.format(frmt)
      seconds = abs(int(total_seconds))
      mapping = {
          'hours': seconds // 3600,
          'minutes': seconds % 3600 // 60,
          'seconds': seconds % 3600 % 60,
      }
      if total_seconds < 0:
          result = negative_frmt.format(**mapping)
      else:
          result = frmt.format(**mapping)
      return mark_safe(result)
docs: Given time in int(seconds), return a string representing the time.
  
      If negative_frmt is not given, a negative sign is prepended to frmt
      and the result is wrapped in a <span> with the "negative-time" class.