code: def main():
      args = get_args()
  
      dur = 0.0
      with open(args.text, encoding="utf-8") as f:
          for line in f:
              if args.filter is not None and args.filter not in line:
                  continue
  
              reco = line.split()[0]
              start, end = reco.split("-")[-1].split("_")
              start = float(start)
              end = float(end)
  
              dur += (end - start) / 1000.0
  
      print(f"{dur / 3600} hours")
  
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types