#!/usr/bin/env python3
# encoding: utf-8

import sys
import subprocess
from time import sleep

try:
    global myOutput
    address = ['90:06:28:ca:bf:d3']
    while True:
        myOutput = subprocess.check_output('sudo arp-scan -l', shell=True).decode('utf-8')
        print(myOutput)
        print()
        if address[0] in myOutput:
            print("Hurray!!!  " + address[0] + " found!")
        else:
            print("Opps!  " + address[0] + " not found :(")
        sleep(5)
except:
    print("Error: ", sys.exc_info()[0])