04-hashlib-md5校验和比较两个文件是否相等

import hashlib
def checksum(path):
  fp=open(path)
  checksum=hashlib.md5()
  while True:
    buffer=fp.read(8192)
    if not buffer:break
    checksum.update(buffer)
  fp.close()
  checksum=checksum.digest()
  return checksum

path='/opt/python/file01'
print checksum(path)

path2='/opt/python/file02'
if checksum(path)==checksum(path2):
  print "true"
else:
  print "different"