Python 日志轮转：logging.handlers 快速落地

import logging
from logging.handlers import RotatingFileHandler, TimedRotatingFileHandler

logger = logging.getLogger('app')
logger.setLevel(logging.INFO)

# 按大小轮转
h1 = RotatingFileHandler('app.log', maxBytes=5*1024*1024, backupCount=7)
# 按天轮转
h2 = TimedRotatingFileHandler('app-day.log', when='D', interval=1, backupCount=14)

fmt = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
h1.setFormatter(fmt); h2.setFormatter(fmt)
logger.addHandler(h1); logger.addHandler(h2)

logger.info('hello')