Python 通过telnet 配置思科

#conf.py 文件
import time
from telnetlib import Telnet

def cfg(addr,user,pwd,secret,conf):
        tn = Telnet(addr)
        tn.write(user+'\n')
        tn.write(pwd+'\n')
        tn.write('enable\n')
        tn.write(secret+'\n')
        tn.write('terminal length 0\n')
        time.sleep(1)
        tn.write('conf t\n')
        time.sleep(1)
        confp = open(conf,'r')
        for cmd in confp:
          tn.write(cmd)    #应为读一行的时候已经有换行符了，所以这里就不添加+'\n'了
          print(cmd)       #用于查看读取的命令
          time.sleep(1)    #建议每条命令都休眠一下，不然可能配置不了
        confp.close()

if __name__ == "__main__":
        fp = open('./ip.txt','r')    #如果有多台主机要配置同样的命令的话，可以将主机IP都放在一个文档中
        for ip in fp:
          print("configuring "+ip.strip())
          conf = cfg(ip.strip(),'cisco','cisco','cisco','./conf.txt')
          print(ip.strip()+' was finished!')
        print('done!')
        fp.close()