用Paramiko捕获AuthenticationException

Question

import paramiko

host='x.x.x.x'
port=22
username='root'
password='password'

cmd='dmidecode > a' 

ssh=paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(host,port,username,password)
try:
    stdin,stdout,stderr=ssh.exec_command(cmd)
    outlines=stdout.readlines()
    resp=''.join(outlines)
    print(resp)
except paramiko.AuthenticationException as error:
    print "ERROR"

我赶不上AuthenticationException。有人能建议我不要破坏脚本，只显示错误吗？

Answer 1

AuthenticationException发生在SSHClient.connect

引发：AuthenticationException -如果身份验证失败

SSHClient.connect调用不在try块中。

这应该是可行的：

try:
    ssh.connect(host,port,username,password)
    stdin,stdout,stderr=ssh.exec_command(cmd)
    outlines=stdout.readlines()
    resp=''.join(outlines)
    print(resp)
except paramiko.AuthenticationException as error:
    print "ERROR"