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Message from discussion write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212.
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Chris Angelico  
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 More options Sep 29 2012, 6:05 am
Newsgroups: comp.lang.python
From: Chris Angelico <ros...@gmail.com>
Date: Sat, 29 Sep 2012 20:05:33 +1000
Local: Sat, Sep 29 2012 6:05 am
Subject: Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212.
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On Sat, Sep 29, 2012 at 7:38 PM, Mark Lawrence <breamore...@yahoo.co.uk> wrote:

> My understanding is that Python 3.3 has regressed the performance of ''.
> Surely the Python devs can speed the performance back up and, just for us,
> use less memory at the same time?

Yes, but to do that we'd have to make Python more Australia-focused
instead of US-centric. As of Python 3.4, the empty string will be
lazily evaluated and be delimited by redback spiders instead of
quotes. That will give a 25% speed and 50% memory usage improvement,
but you'll need to be careful you don't get bitten.

ChrisA


 
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