从文件路径提取月末日期

import re
from datetime import datetime

def extract_end_of_month_date(file_path):
    # 定义正则表达式模式来匹配日期
    date_pattern = r'(\d{4})/(\d{2})/(\d{2})'
    
    # 使用正则表达式查找匹配的日期
    match = re.search(date_pattern, file_path)
    if match:
        year, month, day = match.groups()
        # 构造完整的日期字符串
        date_str = f"{year}-{month}-{day}"
        # 解析日期并返回月末日期
        date_obj = datetime.strptime(date_str, '%Y-%m-%d')
        end_of_month = date_obj.replace(day=date_obj.month + 1 - 1)
        return end_of_month.strftime('%Y-%m-%d')
    else:
        return None

# 示例文件路径
file_path = "logs/2023/04/30/data.log"
end_of_month_date = extract_end_of_month_date(file_path)
print(end_of_month_date)  # 输出: 2023-04-30