Re: Python 3 regex?

Date	2015-01-12 19:48 +0000
From	Ian <hobson42@gmail.com>
Subject	Re: Python 3 regex?
References	<54B40C85.5000806@emerytelcom.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.17635.1421092112.18130.python-list@python.org> (permalink)

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On 12/01/2015 18:03, Jason Bailey wrote:
> Hi all,
>
> I'm working on a Python _3_ project that will be used to parse ISC 
> DHCPD configuration files for statistics and alarming purposes (IP 
> address pools, etc). Anyway, I'm hung up on this one section and was 
> hoping someone could provide me with some insight.
>
> My script first reads the DHCPD configuration file into memory - 
> variable "filebody". It then utilizes the re module to find the 
> configuration details for the wanted "shared network".
>
Hi Jason,

If you actually look at the syntax of what you are parsing, it is very 
simple.

My recommendation would be to write a recursive decent parser for your 
files.

That way will be easier to write, much easier to modify and almost 
certainly faster that a RE solution - and it can easily give you all the 
information in the file thus future proofing it.

'Some people, when confronted with a problem, think "I know, I'll use 
regular expressions." Now they have two problems.' -  Jamie Zawinski.

Regards

Ian

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Re: Python 3 regex? Ian <hobson42@gmail.com> - 2015-01-12 19:48 +0000
  Re: Python 3 regex? Rick Johnson <rantingrickjohnson@gmail.com> - 2015-01-12 15:47 -0800
    Re: Python 3 regex? Chris Angelico <rosuav@gmail.com> - 2015-01-13 10:52 +1100
    Re: Python 3 regex? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-13 01:54 +0000
      Re: Python 3 regex? Rick Johnson <rantingrickjohnson@gmail.com> - 2015-01-12 18:53 -0800
        Re: Python 3 regex? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-13 05:34 +0000
          Re: Python 3 regex? Rick Johnson <rantingrickjohnson@gmail.com> - 2015-01-13 08:01 -0800
        Re: Python 3 regex? wxjmfauth@gmail.com - 2015-01-13 11:19 -0800
          Re: Python 3 regex? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-01-14 14:02 +0100
            Re: Python 3 regex? alister <alister.nospam.ware@ntlworld.com> - 2015-01-14 15:11 +0000
              Re: Python 3 regex? wxjmfauth@gmail.com - 2015-01-14 10:10 -0800
            Re: Python 3 regex? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-15 11:33 +1100
              Re: Python 3 regex? wxjmfauth@gmail.com - 2015-01-14 23:03 -0800
                Re: Python 3 regex? wxjmfauth@gmail.com - 2015-01-15 00:19 -0800
              Re: Python 3 regex? wxjmfauth@gmail.com - 2015-01-15 04:49 -0800
    Re: Python 3 regex? Steven D'Aprano <steve@pearwood.info> - 2015-01-13 06:39 +0000
      Re: Python 3 regex? Rick Johnson <rantingrickjohnson@gmail.com> - 2015-01-13 09:09 -0800
        Re: Python 3 regex? Rick Johnson <rantingrickjohnson@gmail.com> - 2015-01-13 10:17 -0800
  Re: Python 3 regex? Steven D'Aprano <steve@pearwood.info> - 2015-01-13 04:36 +0000
    Re: Python 3 regex? alister <alister.nospam.ware@ntlworld.com> - 2015-01-13 13:23 +0000
      Re: Python 3 regex? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2015-01-13 15:58 +0200
    Re: Python 3 regex? Rustom Mody <rustompmody@gmail.com> - 2015-01-14 21:03 -0800
    Re: Python 3 regex? Rustom Mody <rustompmody@gmail.com> - 2015-01-14 21:08 -0800

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