Rotate image 180 degrees

from PIL import Image

original = Image.open("puppy.bmp")
ori_width, ori_height = original.size
rot_width, rot_height = ori_width, ori_height

rotated = Image.new("RGB" , (rot_width,rot_height))


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



rotated.save('rotated_puppy_2.jpg','JPEG')
rotated.show() #only on Mu