说明：

假如不知道局域网内其它设备（手机、电视、电脑等）的ip或者MAC地址咋办[吐舌]，可以使用python+nmap 局域网内主机扫描，然后根据扫描的结果分析，设备是什么系统、什么厂商等信息

代码：

import nmap
import sys
import json



def get_lan_host(ip):
    
    nm = nmap.PortScanner()

    result = nm.scan(hosts=ip, arguments='-sn -PR')# -sn不进行端口扫描

    print ('返回结果：
',json.dumps(result,indent=4,ensure_ascii= False))
    n=0
    for i,j in result['scan'].items():
        try:
            mac = j['addresses']['mac']
        except Exception as e:
            #print (e)
            mac = '空'

        if j['vendor'] == {}:

            vendor = '空'
        else:

            vendor = list(j['vendor'].values())[0]
        n=n+1
        print (i,mac,vendor)
    print (n)
            
    

def main(ip):
    
    test_item = ["主机列表"]
    
    tabal_head = ["IP地址","MAC地址","厂商","操作系统","OS版本"]

    a = get_lan_host(ip)
    return a
    
if __name__ == '__main__':

    ip = '192.168.0.0/24' # 扫描局域网192.168.0.1到192.168.0.255之前的ip主机

    #ip = '192.168.75-77.0/24'

    excel_file_name = '局域网主机扫描测试报告.xls'
    
    all_data = main(ip)

执行：

测试结果：