'''欢迎关注微信公众号：'diandijishu' 此平台是网路工程师个人日常技术、项目案例经验分享， 为巩固及提升技术能力乃至共享所学所知技术， 也欢迎各位工程师一起分享、一起成长。'''#!/usr/bin/env python#coding:utf-8from netmiko import ConnectHandlerfrom netmiko.ssh_exception import NetMikoTimeoutExceptionfrom netmiko.ssh_exception import NetMikoAuthenticationExceptionfrom datetime import datetimeimport timeimport loggingfrom my_devices import device_list as devices'定义类'class SSH_Client(): '定义login_host函数，用于登陆设备' def login_host(self , a_device):  try:   self.ssh = ConnectHandler(**a_device)   self.ssh.enable()   reply = self.ssh.find_prompt()   print('>' * 10 + '成功登陆结果如下:' + '>' * 10 + '/n' + reply)   return True  except ValueError:   logging.warning(a_device['host'] + ' Secret 密码错误')  except NetMikoTimeoutException:   logging.warning(a_device['host'] + ' 连接不上设备,请检查网络是否正常通信')  except NetMikoAuthenticationException:   logging.warning(a_device['host'] + ' 登陆失败，用户名或密码错误') '定义do_cmd函数,用于执行命令' def do_cmd(self,cmds):  '读取文件，for语句循环执行命令'  with open(cmds) as cmd_obj:   for cmd in cmd_obj:    reply = self.ssh.send_command(cmd)    time.sleep(2)    logging.warning('>' * 10 + cmd.rstrip() + ' 命令执行结果如下:' + '>' * 10 + '/n' + reply) '定义logout_host函数，关闭程序' def logout_host(self):  self.ssh.disconnect()if __name__ == '__main__': cmds = 'cmd.txt' # 存放执行命令文件，相对路径 ssh_client = SSH_Client() start_time = datetime.now() for a_device in devices:  '如果登录结果为True，则执行命令，然后退出'  if ssh_client.login_host(a_device):   ssh_client.do_cmd(cmds)   ssh_client.logout_host()   time.sleep(2) stop_time = datetime.now() print('总花费时长：{0}/n'.format(stop_time - start_time))