paramiko使用上下文管理

# -*- coding: utf-8 -*-
import paramiko

SSH_HOST = '192.168.1.130'
SSH_PORT = 22
SSH_USERNAME = 'root'
SSH_PASSWORD = 'Aa753951123'


class SSHLinuxClient(object):
    def __init__(self, hostname=SSH_HOST, port=SSH_PORT, username=SSH_USERNAME, password=SSH_PASSWORD):
        self.hostname = hostname
        self.port = port
        self.username = username
        self.password = password
        self.connections = list()

    def __enter__(self):
        client = paramiko.SSHClient()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy)
        client.connect(hostname=self.hostname, port=self.port, username=self.username,  password=self.password)
        self.connections.append(client)
        return client

    def __exit__(self, exc_ty, exc_val, tb):
        self.connections.pop().close()


if __name__ == '__main__':
    with SSHLinuxClient() as ssh:
        _, stdout, _ = ssh.exec_command("df -h")
        print(stdout.read().decode('utf-8'))