Quick and dirty Minecraft 1.7 -> 1.8 skin converter

skinconvert.py

#!/usr/bin/env python
# Quick and dirty Minecraft 1.7 -> 1.8 skin converter
# skinconvert.py oldskin.png newskin.png
from __future__ import print_function
import os
import sys
from PIL import Image


if len(sys.argv) != 3:
    print('usage: skinconvert.py oldskin newskin')
    print('Converts Minecraft 1.7 skins to new 1.8 format.')
    sys.exit(1)

orig = Image.open(sys.argv[1])
new = Image.new('RGBA', (64, 64))
new.paste(orig, (0, 0, 64, 32))
rl = orig.crop((0, 16, 16, 32))
new.paste(rl, (16, 48, 32, 64))
ra = orig.crop((40, 16, 56, 32))
new.paste(ra, (32, 48, 48, 64))
try:
    os.stat(sys.argv[2])
    print('Output file already exists')
except OSError:
    new.save(sys.argv[2])