Python实现文件按照日期命名的方法

# -*- coding: utf-8 -*- 
import os
import time
import datetime
rootDir = "I:/1/"
dic={}
for dirName,subDirs,fileList in os.walk(rootDir):
 print dirName
 for fn in fileList:
 fnpath=dirName+fn
 st = os.stat(fnpath)
 mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime = st
 # print mtime
 t=time.ctime(mtime)
 d_from_t = datetime.datetime.fromtimestamp(mtime)
 dic[fnpath]=d_from_t.strftime('%Y-%m-%d%H:%M:%S')
 # print fnpath+"- last modified:", d_from_t.strftime('%Y-%m-%d %H:%M:%S')
 pass
for x in dic:
 # p=os.path.splitext(x)[0]
 p=os.path.dirname(os.path.abspath(x))
 ext=os.path.splitext(x)[1]
 # tpath=p+"/"+dic[x]+ext
 # print tpath
 # print os.path.dirname(os.path.abspath(p))
 nname=os.path.join(rootDir,dic[x]+ext)
 # print p,ext
 print "os.rename('"+x+"','"+nname+"'')"
 os.rename(x,nname)
 pass