from PIL import Image 
im = Image.new('RGB', (300,210), 'RGB(255,255,225)')
for x in range(0,300):
    for y1 in range(0,70): 
        im.putpixel((x,y1), (0,0,0))
    for y2 in range(70,140):
        im.putpixel((x,y2), (255,0,0))
    for y3 in range(140,210):
        im.putpixel((x,y3), (255,0,0))
im.save('drapeau.png')
im.show()