Create thumbnail for all the images in a directory.

create_thumbnails.py

SIZE_THUMBS = (75, 75)
FROM_DIR = 'images'
TO_DIR = 'thumbs'


if __name__ == '__main__':
    import os
    if not os.path.exists(TO_DIR):
        os.mkdir(TO_DIR)

    import glob
    for filename in glob.glob(FROM_DIR + "/*.*p*g"):
        filename_thumbnail = os.path.join(TO_DIR, os.path.split(filename)[1])
        print('{} -> {}'.format(filename, filename_thumbnail))

        from PIL import Image
        im = Image.open(filename)
        im.thumbnail(SIZE_THUMBS)
        im.save(filename_thumbnail)

requirements.txt

Pillow