code: def main():
      filenames, hashes, sizes = [], [], []
  
      for file in sys.argv[1:]:
          if not os.path.isfile(file):
              continue
  
          with open(file, "rb") as f:
              data = f.read()
              md5 = hashlib.md5()
              md5.update(data)
              filenames.append(os.path.split(file)[1])
              hashes.append(md5.hexdigest())
              sizes.append(str(len(data)))
  
      print("{:40s}  {:<32s}  {:<9s}".format("File", "MD5", "Size"))
      for f, h, s in zip(filenames, hashes, sizes):
          print("{:40s}  {:>32s}  {:>9s}".format(f, h, s))
  
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types