Python获取指定网段正在使用的IP

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)