pi-rand-square.py

#!/usr/bin/env python3

from mpmath import mp
import numpy as np
from PIL import Image

size = 256
prec = size ** 2 // 4
mp.dps = prec * 16 // 10 + 2
intpi = int(mp.pi * 16 ** (prec - 1))
tplate = '{{:0{}b}}'.format(size ** 2)
binpi = np.array([tplate.format(intpi)])
binarray = binpi.view("U1").astype(np.int8)
greyval = (binarray * np.int8(255)).reshape(size, size)
img = Image.fromarray(greyval, mode="L")
img = img.resize((size * 2, size * 2))
img.show()
img.save("pi-square.png")

binrand = np.random.randint(2, size=size**2, dtype=np.int8)
greyrand = (binrand * np.int8(255)).reshape(size, size)
imgrand = Image.fromarray(greyrand, mode="L")
imgrand = imgrand.resize((size * 2, size * 2))
imgrand.show()
imgrand.save("rand-square.png")