logging 滚动打印日志

滚动打印日志

有空再补充，先贴代码。

# coding:utf-8
import logging
import time
import re
from logging.handlers import TimedRotatingFileHandler
import os

def deleteDuplicatedElementFromList(listA):
	return sorted(set(listA), key = listA.index)
		
def deleteDuplicatedHandler(listA):
	listB = []
	i = 0
	while(i < len(listA)):
		if str(listA[i]) in listB:
			del listA[i]
		else:
			listB.append(str(listA[i]))
			i += 1
	return listA

def initbackroll():
	log = logging.getLogger()
	log_fmt = '%(asctime)s \"%(filename)s\" [line:%(lineno)d] %(levelname)s: %(message)s'
	formatter = logging.Formatter(log_fmt)
	logging.basicConfig(level=logging.INFO)
	
	log_path = os.path.dirname(os.path.abspath(__file__)) + '\\Logs\\'
	if not os.path.exists(log_path):
		os.mkdir(log_path)
	
	file_handler = TimedRotatingFileHandler(filename=log_path + "logupdate",
	 when="H", interval=6, backupCount=12)
	file_handler.suffix = "%Y-%m-%d_%H.log"
	file_handler.extMatch = re.compile(r"^\d{4}-\d{2}-\d{2}_\d{2}.log$")
	file_handler.setFormatter(formatter)
	file_handler.setLevel(level=logging.INFO)
	
	console = logging.StreamHandler()
	console.setLevel(level=logging.INFO)
	console.setFormatter(formatter)
	
	log.addHandler(file_handler)
	log.addHandler(console)
	del log.handlers[0]
	deleteDuplicatedHandler(log.handlers)
	
	return log

#	log.removeHandler(file_handler)

if __name__ == "__main__":
	pass
	
'''**********************************************************************
interval: 滚动周期，单位有when指定，比如：when=’D’,interval=1，表示每天产生一个日志文件；
backupCount: 表示日志文件的保留个数；
注意TimedRotatingFileHandler这个函数里的when和文件名的正则表达式需要匹配，否则会出现过期删除出错的情况！
'S':suffix="%Y-%m-%d_%H-%M-%S",extMatch=r"\^d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}"； 
'M':suffix="%Y-%m-%d_%H-%M",extMatch=r"^\d{4}-\d{2}-\d{2}_\d{2}-\d{2}"; 
'H':suffix="%Y-%m-%d_%H",extMatch=r"^\d{4}-\d{2}-\d{2}_\d{2}"; 
'D':suffxi="%Y-%m-%d",extMatch=r"^\d{4}-\d{2}-\d{2}"; 
'MIDNIGHT':"%Y-%m-%d",extMatch=r"^\d{4}-\d{2}-\d{2}"; 
'W':"%Y-%m-%d",extMatch=r"^\d{4}-\d{2}-\d{2}"; 
**********************************************************************'''