Scan local network for hosts (IPv4)

scan_network.py

#!/usr/bin/env python3

import subprocess
import math
import re

cmd = ['nmap', '-sn', '192.168.0.0/24']

result = subprocess.run(cmd,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT)

print(result.stdout.decode('utf-8'))

output_lines = result.stdout.decode('utf-8').split('\n')
final_list = []
p = re.compile('(^Nmap scan report for )(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$')

for index in range(0, len(output_lines)):
    # print(output_lines[index])
    # check every 2nd line of nmap's output
    if math.ceil(index / 2) == index / 2:
      try:
          m = p.match(output_lines[index])
          # final_list.append(output_lines[index])
          final_list.append(m.group(2))
      except Exception as e:
          print(e)
print(final_list)