def test_0_Mr_Howes_code(self):
Mat_A = Matrix(A)
Mat_Z = Matrix.zeros((2, 5))
self.assertTrue(
Mat_Z.equals(Matrix(((0, 0, 0, 0, 0), (0, 0, 0, 0, 0)))),
"Zeros method not working correctly.")
with self.assertRaises(AssertionError):
Mat_Z2 = Matrix.zeros((0, 2))
Mat_U = Matrix.ones((4, 4))
self.assertTrue(
Mat_U.equals(
Matrix(
((1, 1, 1, 1), (1, 1, 1, 1), (1, 1, 1, 1), (1, 1, 1, 1)))),
"Ones method not working correctly.")
with self.assertRaises(AssertionError):
Mat_U2 = Matrix.ones((-1, 0))
self.assertTupleEqual((4, 3), Mat_A.shape(
), f"Shape of A should be (4,3). You got a different shape: {Mat_A.shape()}."
)
self.assertTupleEqual((2, 5), Mat_Z.shape(
), f"Shape of Z should be (2,5). You got a different shape: {Mat_Z.shape()}."
)
self.assertTupleEqual((4, 4), Mat_U.shape(
), f"Shape of U should be (4,4). You got a different shape: {Mat_U.shape()}."
)
def main():
mat1 = Matrix(mat=np.array([[1, 2, -3], [4, 0, -2]]))
mat2 = Matrix(mat=np.array([[5, -4, 2, 0], [-1, 6, 3, 1], [7, 0, 5, 8]]))
mat3 = Matrix(mat=np.array([[-1, 3, 1], [2, 5, 0], [3, 1, -2]]))
mat4 = Matrix(mat=np.array([[5, -4, 2], [-1, 3, 1], [7, 0, 8]]))
mat5 = Matrix(mat=[[2, 0], [-7, 5]])
print("Printing out the content")
print(mat1, "\n", mat2)
print("Dot product - with real number directly")
print(mat1 * 5)
print("Dot product - with matrix directly")
print(mat1 * mat2)
print(mat3 * mat4)
print("Determinant")
print(abs(mat3))
print("Identities")
print(Matrix.identity(3))
print("Zero")
print(Matrix.zeros(3, 4))