Python + logging 输出到屏幕，将log日志写入文件 - nancy05 - 博客园
import loggingfrom logging import handlersclass Logger(object):level_relations = {'debug':logging.DEBUG,'info':logging.INFO,'warning':logging.WARNING,'error':logging.ERROR,'crit':logging.CRITICAL}#日志级别关系映射def __init__(self,filename,level='info',when='D',backCount=3,fmt='%(asctime)s - %(pathname)s[line:%(lineno)d] - %(levelname)s: %(message)s'):self.logger = logging.getLogger(filename)format_str = logging.Formatter(fmt)#设置日志格式self.logger.setLevel(self.level_relations.get(level))#设置日志级别sh = logging.StreamHandler()#往屏幕上输出sh.setFormatter(format_str) #设置屏幕上显示的格式th = handlers.TimedRotatingFileHandler(filename=filename,when=when,backupCount=backCount,encoding='utf-8')#往文件里写入#指定间隔时间自动生成文件的处理器#实例化TimedRotatingFileHandler#interval是时间间隔，backupCount是备份文件的个数，如果超过这个个数，就会自动删除，when是间隔的时间单位，单位有以下几种：# S 秒# M 分# H 小时、# D 天、# W 每星期（interval==0时代表星期一）# midnight 每天凌晨th.setFormatter(format_str)#设置文件里写入的格式self.logger.addHandler(sh) #把对象加到logger里self.logger.addHandler(th)if __name__ == '__main__':log = Logger('all.log',level='debug')log.logger.debug('debug')log.logger.info('info')log.logger.warning('警告')log.logger.error('报错')log.logger.critical('严重')Logger('error.log', level='error').logger.error('error')
