将小型python代码段从telnet转换为ssh

import paramiko

def telnet_to_ssh(host, port, username, password, command):
    # 创建SSH客户端对象
    ssh_client = paramiko.SSHClient()
    ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

    try:
        # 连接到目标主机
        ssh_client.connect(host, port, username, password)

        # 执行远程命令
        stdin, stdout, stderr = ssh_client.exec_command(command)
        output = stdout.read().decode()

        # 输出命令执行结果
        print(output)

    except paramiko.AuthenticationException:
        print("认证失败，请检查用户名和密码。")
    except paramiko.SSHException as e:
        print("SSH连接错误：", str(e))
    finally:
        # 关闭SSH连接
        ssh_client.close()

# 示例调用
host = "目标主机IP"
port = 22  # SSH默认端口为22
username = "用户名"
password = "密码"
command = "远程命令"

telnet_to_ssh(host, port, username, password, command)