[英]Obtain MAC address from IP address
I am just learning python 3.6.4 and I'm trying to get this code to work... 我正在学习python 3.6.4,并且正在尝试使此代码正常工作...
I have a list of ip addresses (on my LAN) and I need to obtain the associated mac address for each ip in the list. 我有一个IP地址列表(在我的LAN上),我需要获取列表中每个IP的关联的MAC地址。
When I run the code I get this error: 当我运行代码时,出现此错误:
ip_addresses_as_bytes = str.encode(ip_addresses) TypeError: descriptor 'encode' requires a 'str' object but received a 'list'
ip_addresses_as_bytes = str.encode(ip_addresses)TypeError:描述符“ encode”需要一个“ str”对象,但收到一个“列表”
I can't figure out how to convert the individual list items to bytes. 我不知道如何将单个列表项转换为字节。
import subprocess
import re
def get_mac_addresses(ip_addresses):
for ip_address in ip_addresses:
subprocess.Popen(["ping", "-c 1", ip_address], stdout=subprocess.PIPE)
proc = subprocess.Popen("arp -a", stdout=subprocess.PIPE)
data = proc.communicate()[0]
results = []
ip_address_as_bytes = str.encode(ip_address)
type(ip_address_as_bytes) # ensure it is byte representation
ip_addresses_as_bytes = str.encode(ip_addresses)
type(ip_addresses_as_bytes)
for ip_address_as_bytes in ip_addresses_as_bytes[:]:
if ip_address_as_bytes in data:
ip_data = data[data.find(ip_address_as_bytes):]
mac = re.search(r"(([a-f\d]{1,2}:){5}[a-f\d]{1,2})", ip_data)
if mac is None:
mac = re.search(r"(([a-f\d]{1,2}-){5}[a-f\d]{1,2})", ip_data)
if mac is not None:
mac = mac.groups()[0].replace('-', ':').upper()
else:
mac = '00:00:00:00:00:00'
ip_addresses = ip_addresses_as_bytes.decode()
type(ip_addresses) # ensure it is string representation
ip_address = ip_address_as_bytes.decode()
type(ip_address) # ensure it is string representation
ip_addresses.remove(ip_address)
results += [[ip_address, mac]]
return results
I appreciate any help. 感谢您的帮助。
Thanks! 谢谢!
Your problem is here: 您的问题在这里:
ip_addresses_as_bytes = str.encode(ip_addresses)
ip_addresses
is a list, encode expects a string. ip_addresses
是一个列表,编码需要一个字符串。
Use a loop: 使用循环:
ip_addresses_as_bytes = []
for ip_addresse in ip_addresses:
ip_addresses_as_bytes.append(str.encode(ip_addresses))
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