Code to continuously monitor the network for new IPs using PyShark

continuous_monitor.py

import pyshark
import threading

IPLIST = list()

def main():
    cap = pyshark.LiveCapture(interface="en0")
    threading.Thread(target=cap.sniff_continuously())
    cap.apply_on_packets(callback=callback)
def callback(pkt):
    try:
        if pkt.ip.src not in IPLIST:
            IPLIST.append(pkt.ip.src)
            print(pkt.ip.src)
    except:
        pass

if __name__ == "__main__":
    main()