如何在节点目录中找到最旧的文件夹？

import os

def find_oldest_folder(directory):
    oldest_folder = None
    oldest_time = None

    for folder in os.listdir(directory):
        folder_path = os.path.join(directory, folder)
        if os.path.isdir(folder_path):
            folder_time = os.path.getmtime(folder_path)
            if oldest_time is None or folder_time < oldest_time:
                oldest_folder = folder_path
                oldest_time = folder_time

    return oldest_folder

# 示例调用
oldest_folder = find_oldest_folder('/path/to/node/directory')
print("最旧的文件夹路径：", oldest_folder)