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From: Christian Heimes <lists@cheimes.de>
Subject: Re: Python regexp exclude problem
Date: Wed, 01 Jun 2011 16:29:37 +0200
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Am 01.06.2011 16:20, schrieb Lutfi Oduncuoglu:
> Hello,
> 
> I am trying to write a script for adding ip address to a list. Those ip
> addresses coming thorough from our edge router.
> I have a line in may script like
> 
>       if  any(s not in z2 for s
> in('144.122.','188.38','193.140.99.2','213.161.144.166','92.45.88.242')):
>           os.system(" echo " +z2+ " >> kapat_py_log")
> 
> However ip addresses like  213.161.144.166 are added to the list. What can I
> do about this problem?

I recommend the ipaddr module [1] for the job. It supports nice features
like:

  if IPAddress("144.122.23.42") in IPNetwork("144.122.0.0/16"):
      ...

Christian


[1] http://pypi.python.org/pypi/ipaddr