Python network scanning utility [GCI 2019-20]

net-scan.py

import subprocess, ipaddress, socket, concurrent.futures , re
from subprocess import Popen, PIPE

def myIP(): # get my IP addy
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect(("8.8.8.8", 80))
    ip = s.getsockname()[0]
    s.close()
    return ip

def pingy_the_pinger(ip_addr): # ping them IP's
    try:
        subprocess.check_output(["ping", "-c", "1", ip_addr])
        ip_list.append(ip_addr)
    except:
        pass

def get_MAC(ip_addr): # get MAC from IP address 
    pid = Popen(["arp", "-n", ip_addr], stdout=PIPE)
    s = pid.communicate()[0]
    mac = re.search(r"(([a-f\d]{1,2}\:){5}[a-f\d]{1,2})", str(s)).groups()[0]
    return mac

header = myIP().split('.') # strip IP to get base for search
network = ipaddress.ip_network(header[0] + '.' + header[1] + '.' + header[2] + '.0/24')
hosts = network.hosts()

ip_list = []
mac_list = []

# multithreaddddddddddddddddddddddd uwu
executor = concurrent.futures.ThreadPoolExecutor(254)
ping_hosts = [executor.submit(pingy_the_pinger, str(ip)) for ip in hosts]

print("There are "+str(len(ip_list))+" devices on the network.")
print("-----------------------------------------------------------------")

try:
    for ip in ip_list:
        MAC = get_MAC(str(ip))
        print(ip+ "\t" + MAC)
except :
    ip_list.remove(ip)