http://www.pythonware.com/products/pil/
#!/usr/bin/python
import Image, ImageDraw
W = 255
H = 128
img = Image.new("RGB", (W, H), "black")
draw = ImageDraw.Draw(img)
for x in range(W):
for y in range(H):
color = (x % 255, y % 255, (x % (y+1)) % 255)
draw.point((x,y), fill=color)
draw.line((0, H/2, W, H/2), "yellow")
draw.rectangle([(200, 60), (100, 120)], outline="#FF00FF")
draw.text((20, 40), "quickies.seriot.ch")
img.save("img.png", "PNG")