#!/usr/bin/env python

import os, sys, argparse
from PIL import Image, PngImagePlugin

parser = argparse.ArgumentParser(description='Print PNG metadata')
parser.add_argument('image', type=str)
args = parser.parse_args()
img = Image.open(args.image)
for k, v in img.info.items():
	print('{:15}: {}'.format(k, v))