Copier le long de la dimension supplémentaire Numpy

a = np.array([[1,2],[1,2]])
b = np.repeat(a[:, :, np.newaxis], 3, axis=2)
print(b[:, :, 0])
# [[1 2]
#  [1 2]]

print(b[:, :, 1])
# [[1 2]
#  [1 2]]

print(b[:, :, 2])
# [[1 2]
#  [1 2]]
Real Raccoon