如何从文件名中获取最新日期

import os
import re
from datetime import datetime

def get_latest_date_from_filenames(directory):
    latest_date = None

    # 获取指定目录下的文件列表
    filenames = os.listdir(directory)

    for filename in filenames:
        # 提取日期信息
        match = re.search(r'\d{4}-\d{2}-\d{2}', filename)
        if match:
            date_str = match.group()
            # 将日期信息转换为日期对象
            date = datetime.strptime(date_str, '%Y-%m-%d')

            # 比较日期
            if latest_date is None or date > latest_date:
                latest_date = date

    return latest_date

# 示例用法
directory = '/path/to/files'
latest_date = get_latest_date_from_filenames(directory)
print('最新日期:', latest_date.strftime('%Y-%m-%d'))