在目录中查找最旧和最新的文件

import os
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client

# 配置腾讯云 COS
secret_id = 'your_secret_id'
secret_key = 'your_secret_key'
region = 'your_region'
config = CosConfig(Region=region, SecretId=secret_id, SecretKey=secret_key)
client = CosS3Client(config)

# 指定目录路径
directory = '/path/to/directory'

# 获取目录中的所有文件列表
file_list = []
response = client.list_objects(Bucket='your_bucket', Prefix=directory)
for content in response['Contents']:
    file_list.append(content['Key'])

# 遍历文件列表，记录文件的创建时间和最后修改时间
oldest_file = None
newest_file = None
oldest_time = float('inf')
newest_time = float('-inf')
for file in file_list:
    response = client.head_object(Bucket='your_bucket', Key=file)
    create_time = response['ResponseMetadata']['HTTPHeaders']['x-cos-meta-ctime']
    modify_time = response['ResponseMetadata']['HTTPHeaders']['x-cos-meta-mtime']
    if create_time < oldest_time:
        oldest_file = file
        oldest_time = create_time
    if modify_time > newest_time:
        newest_file = file
        newest_time = modify_time

# 返回最旧和最新文件的文件名或路径
print("最旧的文件：", oldest_file)
print("最新的文件：", newest_file)