array([[10.0, 10.0, 10.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0, 0.0, 0.0], [
    0.0, 16.0, 16.0, 16.0, -4.0, 0.0], [0.0, 0.0, 0.0, 0.0, -4.0, 0.0], [
    0.0, 0.0, 0.0, 0.0, -4.0, 0.0], [10.0, 10.0, 10.0, 0.0, 0.0, 0.0]])
How to set first column to a constant value of an empty np.zeros numPy matrix?