flipped puppy

from PIL import Image

original = Image.open("puppy.bmp")

ori_width, ori_height = original.size

flipped = Image.new("RGB", (ori_width, ori_height))

for y in range(ori_height):
    for x in range(ori_width):
        pixel = original.getpixel((x, y))
        flipped.putpixel((x, ori_height - 1 - y), pixel)

flipped.save('fliped_puppy.jpg', 'JPEG')
flipped.show()