text: import hashlib
  import time
  
  data = open(__file__, 'rb').read()
  
  for i in range(5):
      h = hashlib.sha1()
      print(time.ctime(), ': {:0.3f} {:0.3f}'.format(
          time.time(), time.clock()))
      for i in range(300000):
          h.update(data)
      cksum = h.digest()