send command to Puck.JS from the raspberry without Espruino Hub install

i am trying the following, but i get following error. any help please

Traceback (most recent call last): File "puck_serial.py", line 6, in

sock.connect((bd_addr,port))   File "<string>", line 5, in connect bluetooth.btcommon.BluetoothError: (112, 'Host is down')

from bluetooth import *
import time
bd_addr = "D8:19:E7:5B:3A:57"
port = 1
sock = BluetoothSocket (RFCOMM)
sock.connect((bd_addr,port))
print 'waiting'
while 1:
        data = sock.recv(10)
        print data
        time.sleep(2.0)
        [#tosend](http://forum.espruino.com/sear­ch/?q=%23tosend) = raw_input()
        [#if](http://forum.espruino.com/search/?­q=%23if) tosend != 'q':
        #        sock.send(tosend)
        [#else](http://forum.espruino.com/search­/?q=%23else):
        #        break

sock.close()