renaming file prefixes and filetypes

In python 2.7, how would I go about renaming any .bat files in my current directory to a file called 1.txt?

(ex) If these are the files in my directory: [test.txt, abc.exe, dkckx.bat, 123.vbs], how could I rena开发者_运维百科me the dkckx.bat to 1.txt?

thx in advance.

Check the python documentation for the rename function.

And may be glob will be helpful too.

os.path has everything you'd need for filename manipulation. glob can search for files:

import os, glob

i = 1

for f in glob.glob('*'):
  if os.path.splitext(os.path.split(f)[-1])[-1].lower() == '.bat':
    os.rename(f, '{0}.txt'.format(i)
    i += 1

No guarantees, but I think this above script should work.