python学习：使用正则收集ip信息

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使用正则表达式收集主机信息

#!/usr/bin/env python

from subprocess import Popen, PIPE

import re

def getIfconfig():

p = Popen(['ifconfig'], stdout=PIPE)

data = p.stdout.read().split('\n\n')

return [i for i in data if i and not i.startswith('lo')]

def parseIfconfig(data):

re_devname = re.compile(r'br|eth|em|virbr|lo|bond[\d:]+',re.M) 使用了正则表达式来收集ip信息

re_mac = re.compile(r'HWaddr ([0-9A-F:]{17})', re.M)

re_ip = re.compile(r'inet addr:([\d\.]{7,15})', re.M)

devname = re_devname.search(data)

if devname:

devname = devname.group()

else:

devname = ''

mac = re_mac.search(data)

if mac:

mac = mac.group(1)

else:

mac = ''

ip = re_ip.search(data)

if ip:

ip = ip.group(1)

else:

ip = ''

return {devname: [ip,mac]}

if __name__ == '__main__':

dic = {}

data = getIfconfig()

for i in data:

dic.update(parseIfconfig(i))

print dic

[root@web10 day03]# python 13_ip.py

{'eth': ['192.168.1.200', '00:0C:29:B7:57:8F']}