# -*- coding: cp936 -*-
 import os
 from nt import chdir
 path="./files/"
 fromstr="转换后"
 tostr=""
 for root,dirs,files in os.walk(path):
     for name in files:
         print name
         print root
         if fromstr in name:
             newname=name.replace(fromstr,tostr)
             print newname
             os.rename(root+"/"+name,root+"/"+newname)