import urllib.request, urllib.error, urllib.parse
from wand.image import Image
from wand.display import display
fg_url = 'http://i.stack.imgur.com/Mz9y0.jpg'
bg_url = 'http://i.stack.imgur.com/TAcBA.jpg'
bg = urllib.request.urlopen(bg_url)
with Image(file=bg) as bg_img:
    fg = urllib.request.urlopen(fg_url)
with Image(file=fg) as fg_img:
    bg_img.composite(fg_img, left=100, top=100)
fg.close()
display(bg_img)
bg.close()
Compositing two images with python wand