Error message with PIL putpixel

[louloudevinci]

Hey ! I want to change all the pixels of an image with this loop but I have an error message : "'module' object has not attribute 'putpixel' and I don't know why...

from PIL import Image

picture = Image.open("K:\profil\Bureau\CODES ISN\panda.jpg")
(largeur, longueur) = picture.size
print(largeur,"*",longueur)

for y in range(largeur) :
    for x in range(longueur) :
        newpicture = Image.putpixel(picture, (x,y), (116, 208, 241))

newpicture.show