如何重命名子目录中的图像？

import os

def rename_images_in_subdirectory(directory):
    # 遍历指定目录下的所有子目录和文件
    for root, dirs, files in os.walk(directory):
        for filename in files:
            # 检查文件是否为图像文件，这里以.jpg为例
            if filename.lower().endswith(('.jpg', '.jpeg', '.png', '.gif')):
                # 构建新的文件名，例如在原文件名前加上"new_"
                new_filename = 'new_' + filename
                # 获取文件的完整路径
                old_file_path = os.path.join(root, filename)
                # 构建新的文件完整路径
                new_file_path = os.path.join(root, new_filename)
                # 重命名文件
                os.rename(old_file_path, new_file_path)
                print(f'Renamed: {old_file_path} to {new_file_path}')

# 使用示例
directory_to_rename = '/path/to/your/subdirectory'
rename_images_in_subdirectory(directory_to_rename)