docs: def format_duration(secs):
      """
      Format a duration in seconds as minutes and seconds.
      """
      secs = int(secs)
  
      if abs(secs) > 60:
          mins = abs(secs) / 60
          secs = abs(secs) - (mins * 60)
  
          return '%s%im %02is' % ('-' if secs < 0 else '', mins, secs)
  
      return '%is' % secs