【python】logging日志输出及保存至文件_python logging 输出到文件

参考：

1. python + logging 实现日志输出及保存到文件
2. Python + logging 输出到屏幕，将log日志写入文件

import logging
from logging import handlers

def get_logger(logger_name, file_path):	# logger名和logger文件存放地址
    logger = logging.getLogger(logger_name)
    logger.setLevel(level=logging.DEBUG)
    formatter = logging.Formatter('%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s')

    time_rotating_file_handler = handlers.TimedRotatingFileHandler(file_path, when="MIDNIGHT", interval=1, backupCount=30)	#每天零点存一个文件，最多30个
    time_rotating_file_handler.setLevel(logging.DEBUG)
    time_rotating_file_handler.setFormatter(formatter)

    stream_handler = logging.StreamHandler()
    stream_handler.setLevel(logging.DEBUG)
    stream_handler.setFormatter(formatter)

    logger.addHandler(time_rotating_file_handler)
    logger.addHandler(stream_handler)

    return logger

if __name__ == '__main__':
	logger = get_logger('test','./test.log')
	logger.debug('This is a debug message.')
    logger.info('This is an info message.')
    logger.warning('This is a warning message.')
    logger.error('This is an error message.')
    logger.critical('This is a critical message.')
    try:
    	x = 1/0
    	logger.info(x)
    except Exception as e:
    	logger.error(e)

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