Ping many IP addresses in parallel to see which respond to a ping. Useful for finding IPs of another device you put on the network.

ip_scan.py

import threading
import subprocess


def f(x: int) -> None:
    try:
        output = subprocess.check_output(["ping", "-n", "1", f"192.168.1.{x}"])
        if b"unreachable" not in output:
            print(f"{x} was successful")
    except subprocess.CalledProcessError:
        pass

threads = [threading.Thread(target=f, args=(i,)) for i in range(1, 255)]
for t in threads:
    t.start()
for t in threads:
    t.join()
print("Done")