4-2

4-2
import ping3
import socket
import graphviz
from ipaddress import IPv4Network
from concurrent.futures import ThreadPoolExecutor, as_completed

def ping(ip):
    try:
        available = ping3.ping(ip)
    except Exception:
        available = False
    return (ip, available)

def getAvailableIP(network):
    result = []
    with ThreadPoolExecutor() as executor:
        futures = []
        for ip in IPv4Network(network, strict=True):
            futures.append(executor.submit(ping, str(ip)))
        for future in as_completed(futures):
            ip, available = future.result()
            if available:
                result.append((ip, available))
    return result

if __name__ == '__main__':
    my_ip = socket.gethostbyname(socket.gethostname())
    all_ip = getAvailableIP('192.168.1.0/255.255.255.0')
    dot = graphviz.Digraph('round-table', comment='The Round Table')
    dot.node('my_ip', label=my_ip)
    for i, ip in enumerate(all_ip):
        if ip[0] != my_ip:
            dot.node(f'ip{i}', label=ip[0])
            dot.edge('my_ip', f'ip{i}', label=str(round(ip[1],6)))
    dot.render(directory='doctest-output', view=True)