"""

===============

Image Thumbnail

===============

You can use Matplotlib to generate thumbnails from existing images.

Matplotlib relies on Pillow_ for reading images, and thus supports all formats

supported by Pillow.

.. _Pillow: https://python-pillow.org/

"""

from argparse import ArgumentParser

from pathlib import Path

import sys

import matplotlib.image as image

parser = ArgumentParser(

description="Build thumbnails of all images in a directory.")

parser.add_argument("imagedir", type=Path)

args = parser.parse_args()

if not args.imagedir.isdir():

sys.exit(f"Could not find input directory {args.imagedir}")

outdir = Path("thumbs")

outdir.mkdir(parents=True, exist_ok=True)

for path in args.imagedir.glob("*.png"):

outpath = outdir / path.name

fig = image.thumbnail(path, outpath, scale=0.15)

print(f"saved thumbnail of {path} to {outpath}")