code: def format_time(seconds):
      
  
      if not isinstance(seconds, (int, float)):
          return str(seconds)
  
      if math.isnan(seconds):
          return "-"
  
      if abs(seconds)<60:
          return format_time_small(seconds)
      else:
          return format_time_large(seconds)
docs: Formats a string from time given in seconds. For large times
      (``abs(seconds) >= 60``) the format is::
  
          dd:hh:mm:ss
  
      For small times (``abs(seconds) < 60``), the result is given in 3
      significant figures, with units given in seconds and a suitable SI-prefix.