code: def format_timedelta(td):
      if td.days < 0:
          raise ValueError("timedelta must be positive")
      hours, sec = divmod(td.seconds, 3600)
      mins, sec = divmod(sec, 60)
  
      return f"{hours:02}:{mins:02}:{sec:02}"
  
label_desc: Use image node_id 1 for calling a global function with example usage: format_timedelta(td) and returns: hours, str, mins, str, sec