相关疑难解决方法(0)

我正在尝试开始使用Paramiko库,但是当我尝试连接以下简单程序时,库就会抛出异常:

import paramiko
ssh = paramiko.SSHClient()
ssh.connect('127.0.0.1', username='boatzart', password='mypassword')

我得到的错误是:

Traceback (most recent call last):
File "test.py", line 6, in <module>
ssh.connect('127.0.0.1')
File "build/bdist.macosx-10.7-intel/egg/paramiko/client.py", line 316, in connect
File "build/bdist.macosx-10.7-intel/egg/paramiko/client.py", line 85, in missing_host_key
paramiko.SSHException: Unknown server 127.0.0.1

无论我尝试哪种服务器都会发生这种情况

我在paramiko中写了这段代码:

def TryExecute(hostname='192.168.1.1', user='root', passwd='root'):
    ssh = SSHClient()
    ssh.set_missing_host_key_policy(AutoAddPolicy())
    ssh.connect(hostname, username=user, password=passwd, timeout=3)
    #stdin, stdout, stderr =  ssh.exec_command("uname -a")

    session = ssh.invoke_shell()
    session.send("\n")

    session.send("echo step 1\n")
    time.sleep(1)

    session.send("sleep 30\n")
    time.sleep(1)

    while not session.recv_ready():
        time.wait(2)

    output = session.recv(65535)

    session.send("echo step 2\n")
    time.sleep(1)

    output += session.recv(65535)

我尝试在我的linux服务器上执行更多命令,问题是我的python代码不等待完成执行命令,例如,如果我尝试执行"sleep 30",则python不等待30秒完成执行命令,怎么解决这个问题？我试试白衣,而recv_ready()蝙蝠不等待:(