python logging模块日志回滚RotatingFileHandler-优快云博客

本文深入探讨了Python中日志模块的使用方法，包括如何配置不同级别的日志输出，如Error、Info、Warning和Debug，以及如何将日志信息输出到控制台和文件。通过实例演示了如何创建一个日志记录器，设置日志格式，以及如何处理日志文件的滚动。此外，还介绍了如何根据不同的日志级别将日志信息存储在不同的文件夹下。

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# coding=utf-8
import logging
import time
import os
import logging.handlers

def logger(appname,rootstdout=True):

    log_fmt= "%(asctime)s --%(name)s [%(levelname)s]:\n%(message)s"
    c_fmt="%(asctime)s --%(name)s [%(levelname)s]:\n%(message)s"
    date_format = "%Y-%m-%d %H:%M:%S %a"
    #设置Console输出level
    logging.basicConfig(level=logging.DEBUG,
                            format=c_fmt,
                            datefmt=date_format,

                            )

    list_level=["Error","Info","Warning","Debug"]
    stamp = time.strftime("%Y%m%d", time.localtime())+".log"
    logsdir=os.path.join(os.getcwd(),"logs")
    if os.path.exists(logsdir):
        for p in list_level:
            if os.path.exists(os.path.join(logsdir,p)):
                pass
            else:
                os.mkdir(os.path.join(logsdir,p))
    else:
        os.mkdir(logsdir)
        list_level=["Error","Info","Warning","Debug"]
        for p in list_level:
             print(os.path.join(logsdir,p))
             os.mkdir(os.path.join(logsdir,p))

    f_dict={}
    for i in list_level:
        filename=os.path.join(logsdir,i,stamp)
        f_dict[i]=filename
    logger= logging.getLogger(root)

    for k,v in f_dict.items():
            handler=logging.handlers.RotatingFileHandler(filename=v, maxBytes=1024*1024*50, backupCount=5,encoding="utf-8",delay=False)
            h_fmt=logging.Formatter(log_fmt)
            handler.setFormatter(h_fmt)
            if k==list_level[0]:
                handler.setLevel(logging.ERROR)
            elif k==list_level[1]:
                handler.setLevel(logging.INFO)
            elif k== list_level[2]:
                 handler.setLevel(logging.WARNING)
            else :
                 handler.setLevel(logging.DEBUG)
            logger.addHandler(handler)
    logger.propagate = rootstdout
    return  logger

if __name__ == "__main__":
        logger=logger("root",rootstdout=True)
        while True:
            time.sleep(0.01)
            logger.info("file test",exc_info=True)
            logger.debug("bebug test")
            logger.error("error test")
            logger.warning("warning test")

C:\Python37\python.exe C:/Users/Administrator/PycharmProjects/Supro/src/rotating_rewrite.py
2019-03-21 23:32:40 Thu --SshTest.class [INFO]:
file test
NoneType: None
2019-03-21 23:32:40 Thu --SshTest.class [DEBUG]:
bebug test
2019-03-21 23:32:40 Thu --SshTest.class [ERROR]:
error test
2019-03-21 23:32:40 Thu --SshTest.class [WARNING]:
warning test
2019-03-21 23:32:40 Thu --SshTest.class [INFO]:
file test
NoneType: None
2019-03-21 23:32:40 Thu --SshTest.class [DEBUG]:

转载于:https://www.cnblogs.com/SunshineKimi/p/10540178.html