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#!/usr/bin/env python3

# encoding: utf-8

"""

Thumbnail images to a maximum of 320px wide and 160px high

"""

import argparse

import glob

from PIL import Image # pip install pillow

max_size = 320, 160

parser = argparse.ArgumentParser(

description="Thumbnail images to a maximum size",

formatter_class=argparse.ArgumentDefaultsHelpFormatter,

)

parser.add_argument("--file", default="assets/*.png", help="Input file specification")

args = parser.parse_args()

for infile in glob.glob(args.file):

im = Image.open(infile)

if im.width <= max_size[0] and im.height <= max_size[1]:

continue

size_before = im.size

im.thumbnail(max_size)

im.save(infile)

print(f"Resized {infile} from {size_before} to {im.size}")