Python 将文件重新命名

 # -*- coding: utf-8 -*-
 __author__ = 'louis'

 import os
 import re

 def rename_files(dir_path):
     i=1
     print dir_path
     for fil in dir_list:
         if os.path.isfile(os.path.join(dir_path, fil)) == True:
             if re.search('.*avi$', fil):
                 print fil
                 new_name = str(i)+'.avi'
                 os.rename(os.path.join(dir_path, fil), os.path.join(dir_path, new_name))
                 i += 1

 if __name__ == '__main__':
     print "Hello world"
     d_path = r"c:\Te"
     rename_files(d_path)

     dir_list = os.listdir(d_path)
     print dir_list