Python - Patrón tres barras verticales

import skimage.io as io

import numpy as np

import matplotlib.pyplot as plt

h=np-zeros((30,30))

i=np.ones((30,30))

e= np.block([[h,i],[h,i]])

plt.matshow(e, cmap='gray')

f=np.block([[h],[h]])

plt.matshow(f, cmap='gray')

j=np.block([[h,i]])

g=np.block([[e,e,f],[e,e,f],[j,j,h]])

plt.matshow(g, cmap='gray')

plt.matshow(g.transpose(), cmap='gray')