Python基础学习八 写日志

 import logging
 from logging import handlers

 class Logger(object):
     level_relations = {
         'debug': logging.DEBUG,
         'info': logging.INFO,
         'warning': logging.WARN,
         'error': logging.ERROR,
         'crit': logging.CRITICAL
     }  # 日志级别关系映射

     def __init__(self, fp, level='debug', when='midnight', interval=1, backCount=5, encoding='utf-8'):
         '''

         :param fp:日志文件路径
         :param level: 日志级别 默认是debug
         :param when: 分割日志的单位 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
         :param interval: 时间间隔 默认每天凌晨
         :param backCount: 备份文件个数 默认5个
         :param encoding: 日志文件编码
         '''
         self.level = self.level_relations.get(level)
         self.logger = logging.getLogger(fp)
         self.logger.setLevel(self.level)
         fmt = logging.Formatter('%(asctime)s - %(pathname)s[line:%(lineno)d] - %(levelname)s: %(message)s')
         sh = logging.StreamHandler()
         sh.setFormatter(fmt)
         sh.setLevel(self.level)
         th = handlers.TimedRotatingFileHandler(fp, when=when, interval=interval, backupCount=backCount,
                                                encoding=encoding)
         th.setFormatter(fmt)
         th.setLevel(self.level)
         self.logger.addHandler(th)
         self.logger.addHandler(sh)

     def debug(self, msg):
         self.logger.debug(msg)

     def info(self, msg):
         self.logger.info(msg)

     def warning(self, msg):
         self.logger.warning(msg)

     def error(self, msg):
         self.logger.error(msg)

     def crit(self, msg):
         self.logger.critical(msg)

 if __name__ == '__main__':
     l = Logger('a.log')  # 实例化
     l.info('hehehe')  # 调用
     l.debug('哈哈哈')
     l.error('xxx')