Get a cell from the worksheet according to the given coords and parse it according to the
    given cell_mode. Coords is a tuple of (col, row).

def get_cell(self, coords, cell_mode=CellMode.cooked):
    """Get a cell from the worksheet according to the given coords and parse it according to the
    given cell_mode. Coords is a tuple of (col, row).
    """
    return self.parse_cell(self.get_row(coords[1])[coords[0]], coords, cell_mode)