Enable bluetooth socket (server socket) to communicate with other device (client socket) using python

bluetooth_test.py

import bluetooth

server_socket=bluetooth.BluetoothSocket( bluetooth.RFCOMM )
port = 1
server_socket.bind(("",port))
server_socket.listen(1)
client_socket,address = server_socket.accept()
print("Accepted connection from ",address)

while True:
    res = self.client_socket.recv(1024)
    client_socket.send(res)
    if res == 'q':
        print ("Quit")
        break
    else:
        print("Received:",res)

client_socket.close()
server_socket.close()

Hello,
i'm using RPI 3B+ and Python3.5.3 version. Unfortunetly i have error when i want make .py:
"Traceback (most recent call last):
File "testy.py", line 1, in
from bluetooth import *
ImportError: No module named 'bluetooth'"
I checked what say uncle Google but not found answer.
Any idea what i do wrong?

Hello,

Have you tried to install python packages in this following link?
https://stackoverflow.com/questions/23985163/python3-error-no-module-named-bluetooth-on-linux-mint

Best,
Craig