TimedRotatingFileHandler

按时间自动切割日志文件

参数说明

logging.handlers.TimedRotatingFileHandler(filename, when=’h’, interval=1, backupCount=0, encoding=None, delay=False, utc=False)

when - interval的类型

interval - 时间间隔
backupCount - 备份保留的数目，默认不限制

示例

import logging
from logging.handlers import TimedRotatingFileHandler
logger = logging.getLogger('SQD')
logger.setLevel(logging.DEBUG)
formatter = logging.Formatter(
    fmt='[%(asctime)s %(levelname)s %(filename)s:%(lineno)d] %(message)s',
    datefmt='%Y%m%d %H:%M:%S')
file_hdlr = TimedRotatingFileHandler('log/out.log',
                                     when='s',
                                     backupCount=3,
                                     interval=1)
file_hdlr.setFormatter(formatter)
logger.addHandler(file_hdlr)
logger.debug('debug message')
logger.info('info message')
logger.warn('warn message')

后缀默认格式为%Y-%m-%d_%H-%M-%S ，可设置.suffix修改，但backupCount会失效

# ...
file_hdlr.suffix = '%Y%m%d-%H%M%S'
# ...