Python Imaging Library/Image Tiling
Appearance
from PIL import Image
img = Image.new( 'RGB', (255,255), "black") # create a new black image
pixels = img.load() # create the pixel map
for i in range(img.size[0]): # for every pixel:
for j in range(img.size[1]):
pixels[i,j] = (i, j, 100) # set the colour accordingly
img.show()