Python获取本机所有网卡ip，掩码和广播地址实例代码

本文主要研究的是使用Python获取本机所有网卡ip，掩码和广播地址，分享了相关的实例代码，具体介绍如下。

搜了一天，竟然没找到一段合适的代码来获取机器中所有网卡的ip，掩码和广播地址，大部分都是用socket，但是socket通常返回的要不就是内网地址，要不就是公网地址，不能够找到所有地址，真的太忧桑了，决定自己通过ifconfig或ipconfig的返回信息，一步步地过滤了。这次的代码主要用到了正则表达式和subprocess模块，而且为了兼容所有平台（win，linux和mac），也用到了platform来判断系统类型，不说太多，代码如下：

import subprocess
import re
import platform

def find_all_ip(platform):
ipstr = '([0-9]{1,3}\.){3}[0-9]{1,3}'
if platform == "Darwin" or platform == "Linux":
 ipconfig_process = subprocess.Popen("ifconfig", stdout=subprocess.PIPE)
 output = ipconfig_process.stdout.read()
 ip_pattern = re.compile('(inet ％s)' ％ ipstr)
 if platform == "Linux":
  ip_pattern = re.compile('(inet addr:％s)' ％ ipstr)
 pattern = re.compile(ipstr)
 iplist = []
 for ipaddr in re.finditer(ip_pattern, str(output)):
  ip = pattern.search(ipaddr.group())
  if ip.group() != "127.0.0.1":
   iplist.append(ip.group())
 return iplist
elif platform == "Windows":
 ipconfig_process = subprocess.Popen("ipconfig", stdout=subprocess.PIPE)
 output = ipconfig_process.stdout.read()
 ip_pattern = re.compile("IPv4 Address(\. )*: ％s" ％ ipstr)
 pattern = re.compile(ipstr)
 iplist = []
 for ipaddr in re.finditer(ip_pattern, str(output)):
  ip = pattern.search(ipaddr.group())
  if ip.group() != "127.0.0.1":
   iplist.append(ip.group())
 return iplist

def find_all_mask(platform):
ipstr = '([0-9]{1,3}\.){3}[0-9]{1,3}'
maskstr = '0x([0-9a-f]{8})'
if platform == "Darwin" or platform == "Linux":
 ipconfig_process = subprocess.Popen("ifconfig", stdout=subprocess.PIPE)
 output = ipconfig_process.stdout.read()
 mask_pattern = re.compile('(netmask ％s)' ％ maskstr)
 pattern = re.compile(maskstr)
 if platform == "Linux":
  mask_pattern = re.compile(r'Mask:％s' ％ ipstr)
  pattern = re.compile(ipstr)
 masklist = []
 for maskaddr in mask_pattern.finditer(str(output)):
  mask = pattern.search(maskaddr.group())
  if mask.group() != '0xff000000' and mask.group() != '255.0.0.0':
   masklist.append(mask.group())
 return masklist
elif platform == "Windows":
 ipconfig_process = subprocess.Popen("ipconfig", stdout=subprocess.PIPE)
 output = ipconfig_process.stdout.read()
 mask_pattern = re.compile(r"Subnet Mask (\. )*: ％s" ％ ipstr)
 pattern = re.compile(ipstr)
 masklist = []
 for maskaddr in mask_pattern.finditer(str(output)):
  mask = pattern.search(maskaddr.group())
  if mask.group() != '255.0.0.0':
   masklist.append(mask.group())
 return masklist

def get_broad_addr(ipstr, maskstr):
iptokens = map(int, ipstr.split("."))
masktokens = map(int, maskstr.split("."))
broadlist = []
for i in range(len(iptokens)):
 ip = iptokens[i]
 mask = masktokens[i]
 broad = ip & mask | (~mask & 255)
 broadlist.append(broad)
return '.'.join(map(str, broadlist))

def find_all_broad(platform):
ipstr = '([0-9]{1,3}\.){3}[0-9]{1,3}'
if platform == "Darwin" or platform == "Linux":
 ipconfig_process = subprocess.Popen("ifconfig", stdout=subprocess.PIPE)
 output = (ipconfig_process.stdout.read())
 broad_pattern = re.compile('(broadcast ％s)' ％ ipstr)
 if platform == "Linux":
  broad_pattern = re.compile(r'Bcast:％s' ％ ipstr)
 pattern = re.compile(ipstr)
 broadlist = []
 for broadaddr in broad_pattern.finditer(str(output)):
  broad = pattern.search(broadaddr.group())
  broadlist.append(broad.group())
 return broadlist
elif platform == "Windows":
 iplist = find_all_ip(platform)
 masklist = find_all_mask(platform)
 broadlist = []
 for i in range(len(iplist)):
  broadlist.append(get_broad_addr(iplist[i], masklist[i]))
 return broadlist

system = platform.system()
print(find_all_ip(system))
print(find_all_mask(system))
print(find_all_broad(system))

来源：http://blog.csdn.net/xanxus46/article/details/44682073