import logging
# 第一步，创建一个logger
logger = logging.getLogger()
logger.setLevel(logging.INFO) # Log等级总开关
# 第二步，创建一个handler，用于写入日志文件
logfile = './log.log'
fh = logging.FileHandler(logfile, mode='a')
fh.setLevel(logging.DEBUG) # 用于写到file的等级开关
# 第三步，再创建一个handler,用于输出到控制台
ch = logging.StreamHandler()
ch.setLevel(logging.WARNING) # 输出到console的log等级的开关
# 第四步，定义handler的输出格式
formatter = logging.Formatter('[%(asctime)s][%(levelname)s] - %(message)s')
fh.setFormatter(formatter)
ch.setFormatter(formatter)
# 第五步，将logger添加到handler里面
logger.addHandler(fh)
logger.addHandler(ch)
if __name__ == '__main__':
logger.debug('debug message')
logger.info('info message')
logger.warning('warning message')
logger.error('error message')
logger.critical('critical message')Blog
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