Slices an image into uniform square tiles of a given size

slicer.py

# Usage: python3 slicer.py [image] [size in pixels]
# Requires Pillow

import os
import sys
from PIL import Image

image_url = sys.argv[1]
size = int(sys.argv[2])
print(image_url, size)

image = Image.open(image_url)
image_name = os.path.splitext(image_url)[0]
if not os.path.isdir(image_name):
	os.mkdir(image_name)
for x in range(0,image.width,16):
	for y in range(0,image.height,16):
		tile = image.crop((x,y,(x+16),(y+16)))
		tile.save(image_name+'/'+str(x)+'-'+str(y)+'.png')
		tile.close()
image.close()