#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import subprocess

print("$ nslookup www.python.org")
r = subprocess.call(["nslookup", "www.python.org"])
print("Exit code:", r)

print("$ nslookup")
p = subprocess.Popen(["nslookup"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
output, err = p.communicate(b"set q=mx\npython.org\nexit\n")
print(output.decode("utf-8"))
print("Exit code:", p.returncode)