pythonで点を打つ

plot.py

#!/usr/bin/env python -B
# -*- mode: python; coding: utf-8 -*-
from PIL import Image, ImageDraw

# 参考 http://qiita.com/suto3/items/87af35517f2a8c3bc22e
'''
pip install pillow
'''

img = Image.new('RGBA', (256, 256), (0, 0, 0, 0))
draw = ImageDraw.Draw(img)

dots = 0
for a in range(0, 256, 255):
	for b in range(0, 256, 8):
		for g in range(0, 256, 8):
			for r in range(0, 256, 8):
				red = r | r >> 5
				green = g | g >> 5
				blue = b | b >> 5
				draw.point((dots & 0xff, dots / 0x100), (red, green, blue, a))
				dots += 1
	
img.save('rgba5551.png')