import os, sys
import Image

size = 128, 128

for imgfiles in sys.argv[1:]:
    outimg = os.path.splitext(imgfiles)[0] + ".thumbnail"
    if imgfiles != outimg:
        try:
            imthumb = Image.open(imgfiles)
            imthumb.thumbnail(size, Image.ANTIALIAS)
            imthumb.save(outimg, "JPEG")
        except IOError:
            print ("thumbnail cannot be created for '%s'") % imgfiles