def _layer_size_score(size, hole_count, hole_area):
    """ Heuristic used for determining the correct file number interpretation.
    Lower is better.
    """
    board_area = size[0] * size[1]
    hole_percentage = board_area / hole_area
    hole_score = (hole_percentage - 0.25) ** 2
    size_score = (board_area - 8) ** 2
    return hole_score * size_score
dataset/ETHPy150Open curtacircuitos/pcb-tools/gerber/excellon.py/_layer_size_score/swapped operands of `/`