renaming files for TexturePacker

rename.py

import glob
import os

curdir = os.getcwd()

dirs = [ name for name in os.listdir('./') if os.path.isdir(os.path.join('./', name)) ] 

for j in range(len(dirs)):
    os.chdir(curdir)
    os.chdir(dirs[j])
    f = glob.glob('*')
    pref = os.getcwd().split('\\')[-1].split('_')[-1]
    for i in range(len(f)):
        os.rename(f[i], pref+'_'+str(i)+'.png')