File name batch change

`change_filename.py`


import os
import glob

path = "./input_dir"
files = glob.glob(path + '/*')

for i, f in enumerate(files):
    os.rename(f, os.path.join(path, 'new_file-'+'{0:05d}'.format(i) +'.jpg'))
# new_file-00000.jpg , new_file-00001.jpg