A.zeros_like(A)B.ones_like(A)C.empty_like(A)D.ones(A)
A.numpy.diag([1,2])B.numpy.eye(2)C.numpy.zeros((2,2))D.numpy.ones((2,2))
A.numpy.eye(3)B.numpy.diag([1,2,3])C.numpy.ones((3,3))D.numpy.empty((3,3))