python 图片旋转180度

from PIL import Image
import os

dir_img = "/home/li/PycharmProjects/HED-BSDS/train/aug_gt_scale_0.5/0.0_1_0/"
#待处理图片所在地址
dir_save = "/home/li/PycharmProjects/HED-BSDS/train/aug_gt_scale_0.5/180.0_1_0/"
#旋转后保存的地址

list_img = os.listdir(dir_img)

for img_name in list_img:
    pri_image = Image.open(dir_img+img_name)
    tmppath = dir_save + img_name
    pri_image.rotate(180).save(tmppath)