python批量修改图片尺寸,并保存指定路径的实现方法

import osfrom PIL import Image filename = os.listdir("D://Work//process//样本处理//polyu-all-train")base_dir = "D://Work//process//样本处理//polyu-all-train//"new_dir = "D://Work//process//样本处理//polyu//"size_m = 128size_n = 128 for img in filename:  image = Image.open(base_dir + img)  image_size = image.resize((size_m, size_n),Image.ANTIALIAS)  image_size.save(new_dir+ img)