Python实现批量修改指定目录下图片的大小

from PIL import Image  
import os  
  
def resize_image(input_image_path, output_image_path, size):  
    original_image = Image.open(input_image_path)  
    width, height = original_image.size  
    print(f"The original image size is {width} wide x {height} tall")  
  
    resized_image = original_image.resize(size)  
    width, height = resized_image.size  
    print(f"The resized image size is {width} wide x {height} tall")  
    resized_image.show()  
    resized_image.save(output_image_path)  
  
def batch_resize_images(image_dir, output_dir, size):  
    if not os.path.exists(output_dir):  
        os.makedirs(output_dir)  
  
    for foldername, subfolders, filenames in os.walk(image_dir):  
        for filename in filenames:  
            if filename.endswith(".jpg") or filename.endswith(".png"):  # 添加其他图片格式支持，如.jpeg, .bmp等  
                input_path = os.path.join(foldername, filename)  
                output_path = os.path.join(output_dir, filename)  
                resize_image(input_path, output_path, size)  
  
# 使用示例：将指定目录下的所有图片大小修改为宽600，高400  
image_dir = "/path/to/your/images"  # 修改为你的图片目录路径  
output_dir = "/path/to/your/output"  # 修改为你的输出目录路径  
size = (600, 400)  # 修改为你想要的大小，如(800, 600)，注意这是按照原图比例进行缩放的  
batch_resize_images(image_dir, output_dir, size)