通过ip找mac

# coding:utf-8
import os

cmd = {'arp': 'arp -a | find "',
       'route': 'route PRINT '
       }


def win_mac_get():
    import socket
    import re
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect(("8.8.8.8", 80))
    ip = (s.getsockname()[0])
    s.close()
    print ip
    __arp_cmd = cmd['arp'] + str(ip) + '"'

    __inter_fices = os.popen(__arp_cmd).read().strip('
')

    id = __inter_fices.split('---')[1].split(' ')[1]

    __route_cmd = cmd['route'] + id
    routes = os.popen(__route_cmd).read().strip('
')
    data_list = re.findall(' (.d)...(.*)', routes)
    dict_a = {}
    for i in data_list:
        dict_a[i[0]] = i[1].split('......')[0].replace(' ', '')
    int_id = str(int(id, 16))
    print(dict_a[int_id])


if __name__ == '__main__':
    win_mac_get()