python的日誌模塊使用logging，如果想要輸出符合自己的預期，需要重新定義，廢話不多說，直接貼代碼。

# encoding: utf -8
from logging.handlers import TimedRotatingFileHandler
import logging
import os
import datetime

#調用方法log.debug(‘logname.log‘,‘輸出內容‘)
path=os.path.abspath(‘‘)
class log():
    def __init__(self):
        if os.path.isdir(‘%s\\log
 
‘%path):  #創建log文件夾
            pass
        else:
            os.mkdir(‘%s\\log‘%path)

    def debug(self,logname,kwarg):
        logFilePath = ‘%s\\log\\%s‘%(path,logname)
        logger = logging.getLogger("yourName")
        logger.setLevel(logging.DEBUG)
        handler = TimedRotatingFileHandler(logFilePath,
                                           when
 
="midnight",
                                           interval=1,
                                           backupCount=20)
        formatter = logging.Formatter(‘%(asctime)s   %(levelname)s  %(message)s‘)
        handler.setFormatter(formatter)
        logger.addHandler(handler)
        logger.debug(
 
‘%s‘%(kwarg))
        logger.removeHandler(handler)

    def error(self,logname,kwarg):
        logFilePath = ‘%s\\log\\%s‘%(path,logname)
        logger = logging.getLogger("yourName")
        logger.setLevel(logging.ERROR)
        handler = TimedRotatingFileHandler(logFilePath,
                                           when="midnight",
                                           interval=1,
                                           backupCount=20)
        formatter = logging.Formatter(‘%(asctime)s   %(levelname)s  %(message)s‘)
        handler.setFormatter(formatter)
        logger.addHandler(handler)
        logger.error(‘%s‘%(kwarg))
        logger.removeHandler(handler)

handler = TimedRotatingFileHandler(logFilePath, when="midnight", interval=1, backupCount=20) 定義寫入日誌的策略：

1.每天一個日誌文件。

2.超過20個，刪除最早生成的日誌。

formatter = logging.Formatter(‘%(asctime)s %(levelname)s %(message)s‘) 定義日誌輸出的格式

輸出日誌：

log().debug(‘test.log‘,‘Hello World...‘)

python日誌模塊