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 subprocessimport reimport platformdef 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 iplistdef 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 masklistdef 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 broadlistsystem = platform.system()print(find_all_ip(system))print(find_all_mask(system))print(find_all_broad(system))

总结

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