python 简单实现日志功能以及实现每天自动产生新的日志文件

import logging
from logging.handlers import TimedRotatingFileHandler
import datetime

# 创建logger
logger = logging.getLogger('my_logger')
logger.setLevel(logging.DEBUG)

# 创建TimedRotatingFileHandler，每天轮换日志文件
log_file = 'my_app.log'
time_rotating_handler = TimedRotatingFileHandler(log_file, when='midnight', interval=1, backupCount=30)
time_rotating_handler.setLevel(logging.DEBUG)

# 创建formatter并添加到handler
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
time_rotating_handler.setFormatter(formatter)

# 将handler添加到logger
logger.addHandler(time_rotating_handler)

# 测试日志
logger.debug('This is a debug message')
logger.info('This is an info message')
logger.warning('This is a warning message')
logger.error('This is an error message')
logger.critical('This is a critical message')

# 运行程序，查看每天生成的新日志文件