场景：多个py文件调用Logging，从主文件导入另外的py文件时日志会反复输出几条

原因参考：

https://blog..net/huilan_same/article/details/51858817

解决：将logger实例放到单独的py文件，其他文件都import该py

my_log.py#! /usr/bin/python

# encoding:utf-8

# 配置文件

import ConfigParser

conf = ConfigParser.ConfigParser()

conf.read('config/db_monitor.conf')

# 日志

import logging

logger = logging.getLogger()

logger.setLevel(logging.INFO)

logfile = conf.get("log","check_logfile")

fh = logging.FileHandler(logfile,mode='a')

fh.setLevel(logging.INFO)

ch = logging.StreamHandler()

ch.setLevel(logging.INFO)

formatter = logging.Formatter("%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s")

fh.setFormatter(formatter)

ch.setFormatter(formatter)

logger.addHandler(fh)

logger.addHandler(ch)

调用：import my_log as my_log

my_log.logger.info('%s：初始化os_info表' % tags)