python实现数通设备tftp备份配置文件示例

环境：【wind2003[open Tftp server] + virtualbox:ubuntn10 server】
tftp ： Open TFTP Server  
ubuntn 
python + pyexpect
采用虚拟机原因： pyexpect 不支持windows 

注：原打算采用secrueCrt 脚本编写，因实践中发现没有使用linux下pexpect易用，灵活  ，之前习惯使用expect,因tcl【语法】没有python易用、易维护

编写些程序原因：
最近出了比较严重故障：因netscreen设备bug,一个节点主备设备同时出故障，更换设备后，发现备份配置文件出现乱码【中文】，不能直接使用。
考虑设备在内网，目前有近300台数通设备，因此采用原始tftp备份方式
因备份设备不多：暂只考虑功能，程序效率放在次要

发布：
基本实现netscreen,cisco ios, hw vrp，h3c f1000设备 备份程序
分离出设备信息配置  2.增加备份是否成功检测

问题：
1 未解决ping 不可达主要，反馈慢问题  解决办法：ip 一项，不支持主机名，在 ipCheck函数中添加检查地址进行解决
2.登录设备部署expect代码，没有处理认证失败情况，或者超时等基本检查问题
代码如下:
#coding:utf-8
#!/usr/bin/python
'''
program: run.py
'''
import pexpect
import datetime
import time
import os
import re

#tftp服务器
tftpServer='192.168.1.115'

#备份主机列表【配置格式如下】
#ip  备份脚本[系统类型] 登录帐号  密码  super密码 是否需要备份
backupHosts=[
 {"ip":"192.168.1.27","script":"vrp","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.168.1.28","script":"vrp","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.10.100.100","script":"vrp","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.10.100.101","script":"vrp","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.10.98.167","script":"juniper","login":"netscreen","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.10.98.168","script":"juniper","login":"netscreen","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.168.1.124","script":"h3c_firewall","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.168.1.125","script":"h3c_firewall","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.10.98.233","script":"ios","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
 {"ip":"192.10.98sd","script":"ios","login":"test","passwd":"*****","su_passwd":"*****","check":"Y"},
]

# 检查主机是否可达
def ipCheck(ip):
 if re.match(r"/d{1,3}/./d{1,3}/./d{1,3}/./d{1,3}",ip):
  if os.uname()[0] == "Linux":
   output=os.popen("/bin/ping -c 1 -W 2 %s" % (ip)).read().split("/n")
   if "1 packets transmitted, 1 received, 0% packet loss, time 0ms" in output: