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from PIL import Image
import glob, os, sys, shutil


if len(sys.argv) < 5:
    print "usage: {infile, outfile, width, height}"
    sys.exit(1)

default_image = "./default.jpg"
dirs = os.listdir("./")
for dir in dirs:
    if os.path.isdir(os.path.join("./", dir)):
        infile = dir + "/" + sys.argv[1]
        if not os.path.isfile(infile):
            shutil.copy2(default_image, infile)
        outfile = dir + "/" + sys.argv[2]
        if not (os.path.isfile(outfile) and os.path.getmtime(outfile) > os.path.getmtime(infile)):
            width = int(sys.argv[3])
            height = int(sys.argv[4])
            size = width, height
            im = Image.open(infile)
            im.thumbnail(size, Image.ANTIALIAS)
            im.save(outfile, "JPEG")