# -*- coding:utf-8 -*-

import os

class ImageRename():
 def __init__(self):
 self.path = 'D:/xpu/paper/plate_data'

 def rename(self):
 filelist = os.listdir(self.path)
 total_num = len(filelist)

 i = 0

 for item in filelist:
  if item.endswith('.jpg'):
  src = os.path.join(os.path.abspath(self.path), item)
  dst = os.path.join(os.path.abspath(self.path), '0000' + format(str(i), '0>3s') + '.jpg')
  os.rename(src, dst)
  print 'converting %s to %s ...' % (src, dst)
  i = i + 1
 print 'total %d to rename & converted %d jpgs' % (total_num, i)

if __name__ == '__main__':
 newname = ImageRename()
 newname.rename()