#!/usr/bin/env?python
#coding=utf-8
import?os???????????????????????????#引入os模塊用于查看文件是否存在
import?time?????????????????????????#引入time模塊防止速度太快
from?scapy.all?import?*?????????????#最重要的模塊
from?threading?import?Thread????????#多線程模塊，加快掃描速度
from?optparse?import?OptionParser???#選項模塊

def?sweep（ip）:#定義一個sweep函數
????try:
????????pakt=Ether（dst=“ff:ff:ff:ff:ff:ff“src=“00:0c:29:c6:bc:84“）/ARP（hwsrc=“00:0c:29:c6:bc:84“psrc=“10.140.98.240“hwdst=“00:00:00:00:00:00“pdst=ip）#構造一個arp包
????????result=srp1（pakttimeout=1verbose=0）#定義發送的模式?sr為三層的包?srp為只發不收
????????if?result:
????????????time.sleep（0.1）#延遲0.1
????????????print?ip“在線“
????????????return
????except:
????????return

def?main（）:
????usage=“Usage:?%prog?-f??-i?“
????parser=OptionParser（usage=usage）
????parser.add_option