zoukankan      html  css  js  c++  java
  • logging的基本使用

    logging模块打印log的时候主要有一下几个,级别顺序:CRITICAL>ERROR>WARNING>INFO>DEBUG;

    1.日志输出到file:

    import logging
    logger = logging.getLogger(__name__)
    logger.setLevel(level = logging.INFO)
    handler = logging.FileHandler("log.txt")
    handler.setLevel(logging.INFO)
    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    
    logger.info("Start print log")
    logger.debug("Do something")
    logger.warning("Something maybe fail.")
    logger.info("Finish")
    

      打印的log生成在代码目录下:

    2018-09-12 15:43:25,516 - __main__ - INFO - Start print log
    2018-09-12 15:43:25,516 - __main__ - WARNING - Something maybe fail.
    2018-09-12 15:43:25,516 - __main__ - INFO - Finish
    

      如果要同时兼顾到输出到控制台和file:

    import logging
    
    logger = logging.getLogger(__name__)
    logger.setLevel(level = logging.INFO)
    
    handler = logging.FileHandler("log.txt")
    handler.setLevel(logging.INFO)
    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
    handler.setFormatter(formatter)
    
    console = logging.StreamHandler()
    console.setLevel(logging.INFO)
    console.setFormatter(formatter)
    
    logger.addHandler(handler)
    logger.addHandler(console)
    
    logger.info("Start print log")
    logger.debug("Do something")
    logger.warning("Something maybe fail.")
    logger.info("Finish")
    

     同样在log文件和控制台输出:

    2018-09-12 16:02:52,266 - __main__ - INFO - Start print log
    2018-09-12 16:02:52,290 - __main__ - WARNING - Something maybe fail.
    2018-09-12 16:02:52,299 - __main__ - INFO - Finish
    

     

    封装成类

    # -*- coding:utf-8 -*-
    import logging
    log_name = "auto_updated.log"
    
    class Logger:
        def __init__(self, path,clevel = logging.DEBUG,Flevel = logging.DEBUG):
            self.logger = logging.getLogger(path)
            self.logger.setLevel(logging.DEBUG)
            fmt = logging.Formatter('[%(asctime)s] [%(levelname)s] %(message)s', '%Y-%m-%d %H:%M:%S')
            #set CMD log
            sh = logging.StreamHandler()
            sh.setFormatter(fmt)
            sh.setLevel(clevel)
            #set log file
            fh = logging.FileHandler(path)
            fh.setFormatter(fmt)
            fh.setLevel(Flevel)
            self.logger.addHandler(sh)
            self.logger.addHandler(fh)
    
        def debug(self,message):
            self.logger.debug(message)
    
        def info(self,message):
            self.logger.info(message)
    
        def war(self,message):
            self.logger.warn(message)
    
        def error(self,message):
            self.logger.error(message)
    
        def cri(self,message):
            self.logger.critical(message)
    
    
    
    logger = Logger(log_name, logging.DEBUG, logging.DEBUG)
    logger.cri("this is critical log")

     

  • 相关阅读:
    SQL Server 阻止了对组件 'Ole Automation Procedures' 的 过程'sys.sp_OACreate' 的访问
    谷歌浏览器扩展程序manifest.json参数详解
    获取天气api
    UVA 10385 Duathlon
    UVA 10668 Expanding Rods
    UVALIVE 3891 The Teacher's Side of Math
    UVA 11149 Power of Matrix
    UVA 10655 Contemplation! Algebra
    UVA 11210 Chinese Mahjong
    UVA 11384 Help is needed for Dexter
  • 原文地址:https://www.cnblogs.com/nevermore29/p/9635379.html
Copyright © 2011-2022 走看看