python习题：生成日志文件

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