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Draw a chessboard image using python PIL
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#!/usr/bin/python | |
# adapted from: | |
# http://wordaligned.org/articles/drawing-chessboards | |
from PIL import Image, ImageDraw | |
from itertools import cycle | |
def draw_chessboard(n=8, pixel_width=500): | |
""" | |
Draw an n x n chessboard using PIL. | |
""" | |
def sq_start(i): | |
""" | |
Return the square corners, suitable for use in PIL drawings | |
""" | |
return i*pixel_width / n | |
def square(i, j): | |
""" | |
Return the square corners, suitable for use in PIL drawing | |
""" | |
return map(sq_start, [i, j, i+1, j+1]) | |
image = Image.new("L", (pixel_width, pixel_width)) | |
draw_square = ImageDraw.Draw(image).rectangle | |
squares = (square(i,j) | |
for i_start, j in zip(cycle((0, 1)), range(n)) | |
for i in range(i_start, n, 2)) | |
for sq in squares: | |
draw_square(sq, fill='white') | |
image.save("chessboard.png") | |
# draw 8 x 8 chess board with 500 pixel as pixel width | |
draw_chessboard(8) |
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