Python获取指定网段正在使用的IP

#!/usr/bin/env python
# -*- coding: utf-8 -*-

'''''
使用方法样例 python test20.py 192.168.1.1
(会扫描192.168.1.1-255的ip)
多线程加速后大概十几秒
'''
import platform
import sys
import os
import time
import threading

live_ip = 0

def get_os():
 os = platform.system()
 if os == "Windows":
   return "n"
 else:
   return "c"

def ping_ip(ip_str):
 cmd = ["ping", "-{op}".format(op=get_os()),
     "1", ip_str]
 output = os.popen(" ".join(cmd)).readlines()
 for line in output:
   if str(line).upper().find("TTL") >= 0:
     print("ip: ％s is ok ***" ％ ip_str)
     global live_ip
     live_ip += 1
     break

def find_ip(ip_prefix):
 '''''
 给出当前的127.0.0 ，然后扫描整个段所有地址
 '''
 threads = []
 for i in range(1, 256):
   ip = '％s.％s' ％ (ip_prefix, i)
   threads.append(threading.Thread(target=ping_ip, args={ip, }))
 for i in threads:
   i.start()
 for i in threads:
   i.join()

if __name__ == "__main__":
 print("start time ％s" ％ time.ctime())
 cmd_args = sys.argv[1:]
 args = "".join(cmd_args)
 ip_pre = '.'.join(args.split('.')[:-1])
 find_ip(ip_pre)
 print("end time ％s" ％ time.ctime())
 print('本次扫描共检测到本网络存在％s台设备' ％ live_ip)

来源：https://www.cnblogs.com/111testing/p/14113297.html