def get_row_vec3(self, row_no):
        """Returns a Vector3 for a given row.

        row_no -- The row index

        """

        try:
            r = row_no*4
            x, y, z = self._m[r:r+3]
            return Vector3.from_floats(x, y, z)
        except __HOLE__:
            raise IndexError( "Row and Column should be 0, 1, 2 or 3" )
dataset/ETHPy150Open PythonProgramming/Beginning-Game-Development-with-Python-and-Pygame/Chapter 10/gameobjects/matrix44.py/Matrix44.get_row_vec3