Makes an animated GIF explaining the uxn sprite format

uxn_animation.py

from PIL import Image, ImageDraw

sprite_data = bytes.fromhex('''
    00 00 3c 06 1c 06 3c 00 00 7f c3 f9 e3 f9 c3 ff
    00 00 68 2c 78 2c 34 00 00 fe ff ff ff ff ff ff
    00 01 19 07 0f 1f 07 0f ff ff e7 fb fd fe ff ff
    00 80 f0 e0 c0 f0 f8 f8 ff ff ff ff ff ff 7f 7f
    0f 0e 0c 00 80 ff ff 7f ff ff ff ff 7f 00 00 00
    e8 e0 e0 60 01 ff ff fe 7f ff ff ff fe 00 00 00
''')

print(sprite_data)

images = []

green = (0x00, 0x77, 0x66)
blue = (0x33, 0x00, 0xbb)
white = (0xee, 0xee, 0xee)
red = (0xdd, 0x77, 0x77)
palette = [green, blue, white, red]
black = (0,0,0)

canvas = [[0] * 16 for i in range(24)]

for i in range(96):
    for b in range(8):
        im = Image.new("RGB", (420, 232), black)
        d = ImageDraw.Draw(im)
        for j in range(96):
            d.text((140 + j%16*16, 60 + j//16*20),
                '%02x' % sprite_data[j], fill=white if i==j else green)
        ty = i // 32
        tx = i % 32 // 16
        bit = i % 16 // 8
        suby = i % 8
        canvas[ty * 8 + suby][tx * 8 + b] |= (sprite_data[i] >> (7-b) & 1) << bit
        for y in range(24):
            for x in range(16):
                k = 3
                col = palette[canvas[y][x]]
                d.rectangle((40+k*x, 70+k*y, 40+k*(x+1), 70+k*(y+1)), fill=col)
        images.append(im)

images[0].save('animation.gif',
    save_all=True, append_images=images[1:], optimize=False, duration=20, loop=0)