简单的扫描工具

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import nmap import argparse   def get_parameter():     parser=argparse.ArgumentParser(description='该脚本用于探查主机存活情况')     parser.add_argument('-n',dest='networkPrefix',type=str,default='',help='输入待探测主机网段范围')     parser.add_argument('-s',dest='status',type=str,default='up',help='选择打印的主机状态，默认为UP')     args=parser.parse_args()     networkPrefix=args.networkPrefix     status=args.status.lower()     return networkPrefix,status   def nmap_ping_scan(networkPrefix):     nm=nmap.PortScanner()     result=nm.scan(hosts=networkPrefix,arguments='-v -n -sn')     return result   def main():     networkPrefix,status=get_parameter()     result=nmap_ping_scan(networkPrefix)     for clientIP,clientInfo in result['scan'].items():         clientStatus=clientInfo['status']['state']         if status==clientStatus:             print('{:<15} is {}'.format(clientIP,clientStatus))     if __name__=='__main__':     main()