1  import hashlib
       2  import os
       3  import sys
       4  
       5  def main():
       6      filenames, hashes, sizes = [], [], []
       7  
       8      for file in sys.argv[1:]:
       9          if not os.path.isfile(file):
      10              continue
      11  
      12          with open(file, 'rb') as f:
      13              data = f.read()
      14              md5 = hashlib.md5()
      15              md5.update(data)
      16              filenames.append(os.path.split(file)[1])
      17              hashes.append(md5.hexdigest())
      18              sizes.append(str(len(data)))
      19  
      20      print('{:40s}  {:<32s}  {:<9s}'.format('File', 'MD5', 'Size'))
      21      for f, h, s in zip(filenames, hashes, sizes):
      22          print('{:40s}  {:>32s}  {:>9s}'.format(f, h, s))
      23  
      24  
      25  
      26  if __name__ == "__main__":
      27      sys.exit(int(main() or 0))