def __setitem__(self, coord, value):
        """Sets an individual element in the Matrix44.
        coord is a tuple of (row, column)

        eg. Matrix44[2,3] = 3.

        """

        try:
            row, col = coord
            self._m[row * 4 + col] = 1.0 * value
        except __HOLE__:
            raise IndexError( "Row and Column should be 0, 1, 2 or 3" )
        except TypeError:
            raise TypeError( "Must be a number" )
dataset/ETHPy150Open PythonProgramming/Beginning-Game-Development-with-Python-and-Pygame/Chapter 10/gameobjects/matrix44.py/Matrix44.__setitem__