Python日志输出管理既可在控制打印，又能记入日志文件，且能按级别输出

Love The Way You Lie 2022-02-13 03:49 133阅读 0赞

**要求：**

1、在控制台打印日志；

2、记如指定日志文件；

3、按不同的级别输出；

4、定义日志工具类，减少代码量。

贴代码

import logging
    import sys
    import os
    
    root_dir = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(sys.argv[0]))))
    LOG_FORMAT = "%(asctime)s_%(levelname)s_%(name)s[line:%(lineno)d]: %(message)s"
    LOG_FILE_NAME = root_dir + "/logs/log.log"
    LOG_ERROR_FILE_NAME = root_dir + "/logs/error.log"
    
    
    class LogUtil:
    
        def __init__(self):
            print("初始化:LogUtil")
    
        @staticmethod
        def get_logger(class_name):
            logging.basicConfig(level=logging.DEBUG, format=LOG_FORMAT, filemode='a')
            logger = logging.getLogger(class_name)
            logger.setLevel(logging.INFO)
            rf_handler = logging.FileHandler(LOG_FILE_NAME, encoding='utf-8')
            # rf_handler = logging.StreamHandler(sys.stderr)  # 默认是sys.stderr
            rf_handler.setLevel(logging.DEBUG)
            rf_handler.setFormatter(logging.Formatter(LOG_FORMAT))
    
            f_handler = logging.FileHandler(LOG_ERROR_FILE_NAME, encoding="utf-8")
            f_handler.setLevel(logging.ERROR)
            f_handler.setFormatter(logging.Formatter(LOG_FORMAT))
    
            logger.addHandler(rf_handler)
            logger.addHandler(f_handler)
            return logger
    
    # logger = LogUtil.get_logger('LogUtil')
    # logger.debug('debug message')
    # logger.info('info message')
    # logger.warning('warning message')
    # errors = 'error message', 'big error'
    # logger.error(errors)
    # logger.critical('critical message')