Create a range of JPEG image sizes and save them to the disk. I wrote this to test my image uploading and processing capabilities for https://github.com/saulshanabrook/django-canadanewyork

save_images.py

import os

from PIL import Image


IMAGE_SIZES = range(500, 20000, 2000)
JPEG_SAVE_QUALITY = 100
DIRECTORY = '~/Desktop/temp/'
COLOR = 'red'

def save_pil_image(size, color=COLOR, directory=DIRECTORY, quality=JPEG_SAVE_QUALITY):
    directory = os.path.expanduser(directory)
    file_name = str(size) + '.jpg'
    path = os.path.join(directory, file_name)

    make_directory_if_not_exists(directory)

    image = Image.new('RGB', (size, size,), color)

    with open(path, 'w+') as file:
        image.save(path, format='JPEG', quality=quality)
    print 'saved ' + path

def make_directory_if_not_exists(directory):
    try: 
        os.makedirs(directory)
    except OSError:
        if not os.path.isdir(directory):
            raise

for size in IMAGE_SIZES:
    save_pil_image(size)