Python Imaging Library / PIL / Pillow hello-world

pil_hello.py

# http://effbot.org/imagingbook/introduction.htm
# https://en.wikibooks.org/wiki/Python_Imaging_Library/Editing_Pixels

import PIL.Image as Image

inputFilePath = "test.jpg"
outputFilePath = "out.png"

img = Image.open(inputFilePath)
print (str(img.format) + " " + str(img.size) + " " + str(img.mode))

box = (100,100,400,400)
region = img.crop(box)
region = region.transpose(Image.ROTATE_180)
img.paste(region, box)

pixels = img.load()
for i in range(img.size[0]):
    for j in range(img.size[1]):
        c = list(pixels[i,j])
        c[0] += i
        c[1] += j
        c[2] += 0 
        pixels[i,j] = tuple(c)

img.save(outputFilePath)