matrix operations python code example

Example 1: numpy matrix in python 3

np.matrix([[1, 2], [3, 4]])

# matrix([[1, 2],
#         [3, 4]])

Example 2: matrix python math

>>> x = np.array( ((2,3), (3, 5)) )
>>> y = np.matrix( ((1,2), (5, -1)) )
>>> np.dot(x,y)
matrix([[17,  1],
        [28,  1]])