python学习：使用正则收集ip信息

 

 

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']}