Python MD5文件生成码

import md5 import sys def sumfile(fobj): m = md5.new() while True: d = fobj.read(8096) if not d: break m.update(d) return m.hexdigest() def md5sum(fname): if fname == ‘-‘: ret = sumfile(sys.stdin) else: try: f = file(fname, ‘rb’) except: return ‘Failed to open file’ ret = sum