方法1：
- class 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 - %(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')
- 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')
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方法2：
- logging.basicConfig(level=logging.DEBUG,
- filename=filename,
- filemode='a',
- format=
- '%(asctime)s - %(levelname)s: %(message)s'
- )
- logging.debug('debug 信息')
- http://logging.info('info 信息')
- logging.warning('warning 信息')
- log.logger.error('error 信息')
- logging.critical('critial 信息')
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方法3：
- with open(filename,'wb',buffering=0) as logfile:
- logfile.write("123")
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方法4：
- logfile = open(filename, 'w')
- logfile.write("123",file=logfile)
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