我的get_current_mac函数：

def get_current_mac(interface):
    ifconfig_result = subprocess.check_output(["ifconfig",interface])
    mac_address_search_result = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w",ifconfig_result)

    if mac_address_search_result:
        return mac_address_search_result.group(0)
    else:
        print("[-] Could not read MAC address.")

然后我想将结果打印到屏幕上

options = get_arguments()
current_mac = get_current_mac(options.interface)
print("Current MAC address is: " + str(current_mac))

整个错误是：

Traceback (most recent call last):
  File "./MAC_changer.py",line 38,in <module>
    current_mac = get_current_mac(options.interface)
  File "./MAC_changer.py",line 30,in get_current_mac
    mac_address_search_result = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w",ifconfig_result)
  File "/usr/lib/python3.7/re.py",line 183,in search
    return _compile(pattern,flags).search(string)
TypeError: cannot use a string pattern on a bytes-like object

第38行是：options = get_arguments()

第30行是：mac_address_search_result = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w",ifconfig_result)