#!python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last updated: <2022/06/19 22:06:24 +0900>
"""
Pillow .getpixel(), .putpixel() sample

Windows10 x64 21H2 + Python 3.9.13 64bit + Pillow 9.1.1
"""

from PIL import Image


def main():
    im = Image.open("mandrill.png")
    width, height = im.size
    print("%d x %d" % (width, height))

    gim = im.convert("L")
    oim = Image.new("L", (width, height))

    for y in range(height):
        for x in range(width):
            v = 255 - gim.getpixel((x, y))
            oim.putpixel((x, y), (v))

    oim.show()
    oim.save("output_02getpixel.png")


if __name__ == '__main__':
    main()