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#!/usr/bin/env python3

# -*- coding: utf-8 -*-

# Author: xurongzhong#126.com wechat:pythontesting qq:37391319

# 技术支持 钉钉群：21745728(可以加钉钉pythontesting邀请加入)

# qq群：144081101 591302926 567351477

# CreateDate: 2018-6-12

# dutchflag.py

from PIL import Image

def dutchflag(width, height):

"""Return new image of Dutch flag."""

img = Image.new("RGB", (width, height))

for j in range(height):

for i in range(width):

if j < height/3:

img.putpixel((i, j), (255, 0, 0))

elif j < 2*height/3:

img.putpixel((i, j), (0, 255, 0))

else:

img.putpixel((i, j), (0, 0, 255))

return img

def main():

img = dutchflag(600, 400)

img.save("dutchflag.jpg")

main()