Python中paramiko模块的基础操作与排错问题

import paramiko

key = paramiko.RSAKey.from_private_key_file("C:\\Users\\liyansheng\\.ssh\\id_rsa")
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
print("connecting")
ssh.connect(hostname="192.168.220.128", username="root", pkey=key)
print("connected")
commands = "uname -a"
stdin, stdout, stderr = ssh.exec_command(commands)
stdin.close()
res, err = stdout.read(), stderr.read()
result = res if res else err
print(result)
ssh.close()

if __name__ == '__main__':
    print()

import paramiko

ssh = paramiko.SSHClient()

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

ssh.connect("150.158.16.123", 22, "wuyanping", "2022")

 stdin, stdout, stderr = ssh.exec_command("ls /home")
    print(stdout.read().decode("utf-8"))

ssh.close()

# 执行多条命令,注意传入的参数有个list
def execMultiCmd(host, user, psw, cmds: list, port=22) -> (str, str):
    with paramiko.SSHClient() as ssh_client:
        ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        ssh_client.connect(hostname=host, port=port, username=user, password=psw)
        cmd = ";".join(cmds)
        _, stdout, stderr = ssh_client.exec_command(cmd, get_pty=True)
        result = stdout.read().decode('utf-8')
        err = stderr.read().decode('utf-8')
    return result, err


if __name__ == '__main__':
    cmdList = ["cd /home", "ls"]
    print(execMultiCmd("192.168.220.128", "root", "root", cmdList))

def down_file(host, user, psw, local_file, remote_file, port=22):
    with paramiko.Transport((host, port)) as transport:
        # 连接服务
        transport.connect(username=user, password=psw)
        # 获取SFTP示例
        sftp = paramiko.SFTPClient.from_transport(transport)
        # 下载
        sftp.get(remote_file, local_file)
        transport.close()

if __name__ == '__main__':
    down_file(my_linux.host, my_linux.user, my_linux.psw, "D:\\ssh_download", "/home/test.txt")

Traceback (most recent call last):
  File "D:\MyCode2\py-1\ssh\download.py", line 17, in <module>
    down_file("192.168.220.128", "root", "root", "D:\\ssh_download", "/home/test.txt")
  File "D:\MyCode2\py-1\ssh\download.py", line 11, in down_file
    sftp.get(remote_file, local_file)
  File "D:\MyCode2\py-1\venv\lib\site-packages\paramiko\sftp_client.py", line 810, in get
    with open(localpath, "wb") as fl:
PermissionError: [Errno 13] Permission denied: 'D:\\ssh_download'

if __name__ == '__main__':
    down_file(my_linux.host, my_linux.user, my_linux.psw, "D:\\ssh_download\\test.txt", "/home/test.txt")

def upload_file(host, user, psw, local_file, remote_file, port=22):
    with paramiko.Transport((host, port)) as transport:
        # 连接服务
        transport.connect(username=user, password=psw)
        # 获取SFTP示例
        sftp = paramiko.SFTPClient.from_transport(transport)
        sftp.put(local_file, remote_file)
        transport.close()

if __name__ == '__main__':
    upload_file(my_linux.host, my_linux.user, my_linux.psw, "D:\\ssh_download\\test123.txt", "/home/test/test123.txt")

import os

import paramiko


class SSHTool():
    def __init__(self, ip, port, user, psw):
        """
        初始化
        :param ip:
        :param port:
        :param user:
        :param psw:
        """
        self.ip = ip
        self.port = port
        self.user = user
        self.psw = psw

    def connect_ssh(self):
        """
        创建连接
        :return:
        """
        try:
            self.ssh = paramiko.SSHClient()
            self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            self.ssh.connect(
                hostname=self.ip,
                port=self.port,
                username=self.user,
                password=self.psw
            )
        except Exception as e:
            print(e)
        return self.ssh

    def close_ssh(self):
        """
        关闭连接
        :return:
        """
        try:
            self.ssh.close()
        except Exception as e:
            print(e)

    def exec_shell(self, shell):
        ssh = self.connect_ssh()
        try:
            stdin, stdout, stderr = ssh.exec_command(shell)
            return stdin, stdout, stderr
        except Exception as e:
            print(e)

    def sftp_put_file(self, file, local_dir, remote_dir):
        try:
            t = paramiko.Transport((self.ip, self.port))
            t.connect(username=self.user, password=self.psw)
            sftp = paramiko.SFTPClient.from_transport(t)
            sftp.put(os.path.join(local_dir, file), remote_dir)
            t.close()
        except Exception:
            print("connect error!")

    def sftp_get_file(self, file, local_dir, remote_dir):
        try:
            t = paramiko.Transport((self.ip, self.port))
            t.connect(username=self.user, password=self.psw)
            sftp = paramiko.SFTPClient.from_transport(t)
            sftp.get(remote_dir, os.path.join(local_dir, file))
            t.close()
        except Exception:
            print("connect error!")

import os

if __name__ == '__main__':
    print(os.getcwd())  # D:\MyCode2\py-1\ssh

def get_strs() -> (str, str):
    return "hello", "word"
if __name__ == '__main__':
    # 返回值为元祖的形式
    print(get_strs())  # ('hello', 'word')
    # 获取元祖的个数
    print(len(get_strs()))  # 2
    # 通过下标获取元祖的某一个值
    print(get_strs().__getitem__(1))  # word
    # 通过元祖的某个元素定位对应的下标
    print(get_strs().index("hello"))  # 0

with 表达式 [as target]：
    代码块