IP address regex example - not in java

Christian Harms — Thu, 17 Sep 2009 22:45:21 +0000

Finding an IP address in text or string with python is a simpler task than in java. Only the regex is not shorter than in the java regex example!

First an example with python: build a RegExp-Object for faster matching and than loop over the result iterator.

import re
logText =  'asdfesgewg 215.2.125.32 alkejo 234 oij8982jldkja.lkjwech . 24.33.125.234 kadfjeladfjeladkj'
bytePattern = "([01]?\d\d?|2[0-4]\d|25[0-5])"
regObj = re.compile("\.".join([bytePattern]*4))
for match in regObj.finditer(logText):
    print match.group()

A regex like /\d+\.\d+\.\d+\.\d+/ wont work, because there match "999.999.111.000" too. But for the usage in python - that is it! Using a regular expression is more native in python than in java. Or in javascript or in perl or asp.net... Read more

united-coders.com - rexexp

IP address regex example - not in java