Execute an ICMP ping scan on a network in Python 3

icmp_ping.py

#!/usr/bin/env python3
# https://gist.github.com/EONRaider/a59d6c4636c1211c7a854c384ddf19a0
__author__ = 'EONRaider, keybase.io/eonraider'

import argparse
import ipaddress

try:
    from scapy.all import *
    from scapy.layers.inet import ICMP, IP
except ModuleNotFoundError as e:
    raise SystemExit(f"Requires {e.name} module. Run 'pip install {e.name}' "
                     f"and try again.")

"""Simple subnet ICMP Ping scan. Requires administrator privileges."""


def icmp_ping(netmask: str) -> None:
    for ip_addr in ipaddress.IPv4Network(netmask):
        try:
            ans, unans = sr(IP(dst=str(ip_addr))/ICMP(), timeout=2, verbose=0)
            if not unans:
                ans.summary(
                    lambda p: p[1].sprintf('[+] STATUS for %IP.src%: Host UP')
                )
            else:
                print(f'[-] STATUS for {ip_addr}: Host DOWN\n')
        except KeyboardInterrupt:
            raise SystemExit('Aborting scan...')


if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('subnet', type=str,
                        help='An IP address in CIDR notation defining a subnet '
                             'to scan.')
    args = parser.parse_args()
    icmp_ping(args.subnet)