環境：【wind2003[open Tftp server] + virtualbox:ubuntn10 server】
tftp ： Open TFTP Server  
ubuntn 
python + pyexpect
采用虛擬機原因： pyexpect 不支持windows 

注：原打算采用secrueCrt 腳本編寫，因實踐中發現沒有使用linux下pexpect易用，靈活  ，之前習慣使用expect,因tcl【語法】沒有python易用、易維護

編寫些程序原因：
最近出了比較嚴重故障：因netscreen設備bug,一個節點主備設備同時出故障，更換設備后，發現備份配置文件出現亂碼【中文】，不能直接使用。
考慮設備在內網，目前有近300臺數通設備，因此采用原始tftp備份方式
因備份設備不多：暫只考慮功能，程序效率放在次要

發布：
基本實現netscreen,cisco ios, hw vrp，h3c f1000設備 備份程序
分離出設備信息配置  2.增加備份是否成功檢測

問題：
1 未解決ping 不可達主要，反饋慢問題  解決辦法：ip 一項，不支持主機名，在 ipCheck函數中添加檢查地址進行解決
2.登錄設備部署expect代碼，沒有處理認證失敗情況，或者超時等基本檢查問題
代碼如下:
#coding:utf-8
#!/usr/bin/python
'''
program: run.py
'''
import pexpect
import datetime
import time
import os
import re

#tftp服務器
tftpServer='192.168.1.115'

#備份主機列表【配置格式如下】
#ip  備份腳本[系統類型] 登錄帳號  密碼  super密碼 是否需要備份
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"},
]

# 檢查主機是否可達
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: