naming a batch of files with sequence index

seq-naming.py

# coding: utf-8
import glob

files = glob.glob("*") # get the file list of current directory
out = open("m.bat","w") # generate bat file
i = 1 # where the index start from
for f in files:
    newname = "%03.d%s" %(i,f) # output new file name like 001filename, 002filename
    out.writelines("move %s %s\n"%(f, newname)) 
    i = i +1
    
out.close()

# all right now, run the m.bat in shell