def cut_image(image):
    """Crop the image to 9 equal sized pieces"""
    width, height = image.size
    item_width = int(width / 3)
    box_list = []
    count = 0

    for j in range(0, 3):
        for i in range(0, 3):
            count += 1
            box = (i * item_width, j * item_width, (i + 1) * 
                   item_width, (j + 1) * item_width)
            box_list.append(box)

    # print(count)
    image_list = [image.crop(box) for box in box_list]
    return image_list