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('\n')

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

     __route_cmd = cmd['route'] + id
     routes = os.popen(__route_cmd).read().strip('\n')
     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()