import asyncio, asyncssh, sys

class MySSHClientSession(asyncssh.SSHClientSession):
    def data_received(self, data, datatype):
        print(data, end='')

    def connection_lost(self, exc):
        if exc:
            print('SSH session error: ' + str(exc), file=sys.stderr)

async def run_client(host, cmd):
    conn, client = await asyncssh.create_connection(asyncssh.SSHClient, host)

    async with conn:
        chan, session = await conn.create_session(MySSHClientSession, cmd)
        await chan.wait_closed()

CMD = "ping %s"
try:
    asyncio.get_event_loop().run_until_complete(asyncio.gather(
        run_client('localhost', CMD % 'localhost'),
        run_client('localhost', CMD % 'google.com')
        ))
except (OSError, asyncssh.Error) as exc:
    sys.exit('SSH connection failed: ' + str(exc))