from PIL import Image
im=Image.open("img1.jpg")
def vert(image):
(c,l)=image.size
imageinv=Image.new('RGB',(c,l))
for x in range(c):
for y in range(l):
pixel=image.getpixel((x,y))
programme à compléter…
imageinv.putpixel((x,y),p)
imageinv.save("imginv.jpg")
imageinv.show()