purify_png.py

# coding=utf-8

"""
Copyright © 2016 Hippo Seven
This work is free. You can redistribute it and/or modify it under the
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
"""

import os
import sys

from PIL import Image


def resize_png(f):
    Image.open(f).convert('RGBA').save(f)


def handle_dir(d):
    for f in os.listdir(d):
        path = os.path.join(d, f)
        print path
        if os.path.isfile(path) and path.endswith('.png'):
            resize_png(path)
        elif os.path.isdir(path):
            handle_dir(path)


def main():
    if len(sys.argv) > 1 and os.path.isdir(sys.argv[1]):
        handle_dir(sys.argv[1])


if __name__ == "__main__":
    main()