The mystical magical regex

Getting IP with regex

#!/usr/bin/env python3
import re, os
def getIP():
    jargon = os.popen('/sbin/ip -o -4 addr list').read().split('\n')
    getip = re.compile('[0-9]+: (?P<conn>[A-Za-z0-9]+)( +)inet (?P<addr>([12]?([0-9])+\.){3}([12]?([0-9])+)/[0-9]{1,2})')

    retval = []
    for a in jargon:
        tmp = getip.search(a)
        if tmp:
            retval.append(
                {
                    'conn' : tmp.group('conn'), 
                    'addr' : tmp.group('addr')
                }
            )
    return retval