SSH从python对象到远程服务器的错误

Question

从使用PARAMIKO的服务器上尝试SSH并出现错误

import paramiko

class SSH_Connection(object):
    def __init__(self, instance, mode,LOCAL_IP, username, password):
        self.instance = instance
        self.mode = mode
        self.LOCAL_IP = LOCAL_IP
        self.username = username
        self.password = password
        self.mode = mode
        self.client = paramiko.SSHClient()
        self.client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        self.client.connect(self.LOCAL_IP, username=self.username, password=self.password)

    def std(self,message):
        self.message=message
        _in, out, err = self.client.exec_command(self.message)
        exitcode = out.channel.recv_exit_status()
        stdout = ''.join(out.read())
        stderr = ''.join(err.read())
        return stdout,stderr, exitcode
class UNIT(SSH_Connection):
    pass 

unit = UNIT(1, 'live', 'x.x.x.x', username='root', password='something')

然后我尝试从“单元” SSH到另一台服务器：

unit.std('sshpass -p 123 ssh root@172.16.46.134 -y')

我得到以下信息：

 "\nHost '172.16.46.134' key accepted unconditionally.\n(ecdsa-sha2-nistp256 fingerprint md5 e3:e7:05:73:ac:71:66:74:94:f3:31:2c:77:94:f3:5c)\nssh: Failed reading termmodes\n\nssh: Connection to root@172.16.46.134:22 exited: Failed to set raw TTY mode\n",

当我在Linux的“单元”中执行相同的操作时，此方法有效：

sshpass -p 123 ssh root@172.16.46.134 -y

我该怎么办才能使用paramiko从Python强制SSH，然后使用exe_command进行SSH？