exec( open("timmy.py").read() )

from sympy import init_printing, Matrix, MatMul, latex
from IPython.display import Math
init_printing()

P = Matrix([[0, 1, 0],\
            [1, 0, 0],\
            [0, 0, 1]])

A = Matrix([[0, 4, -2],\
            [4, 8, 6],\
            [6, -4, 2]])

new = P * A

Math( "$$" + latex( MatMul( P, A ), mat_str = "array" ) + "=" + latex( new, mat_str = "array" ) + "$$" )