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Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212.

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Date Fri, 28 Sep 2012 21:17:07 -0500
From Tim Chase <python.list@tim.thechases.com>
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Subject Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212.
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On 09/28/12 20:58, Mark Lawrence wrote:
> On 29/09/2012 02:35, Tim Chase wrote:
>> On 09/28/12 19:31, iMath wrote:
>>> write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212.
>>
>> Okay, that was pretty easy.  Thanks for the challenge :-)
> 
> What's the run time speed like?

O(1)

r = re.compile(
    "800-555-1212|"
    "555-1212|"
   r"\(800\) 555-1212"
    )

(okay, so I also have one that solves the OP's underqualified
problem, but without the OP at least *trying* to code up an answer
and asking for help with it, I've give the snarky solution :-)

> How much memory does it use? 

Insignificant.

> Shouldn't you be using the regex module from pypi instead of the
> standard library re? 

Only if the OP requested it ;-)

> Guess who's borrowed the time machine?

Neutrino!

-tkc

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Thread

write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. iMath <redstone-cold@163.com> - 2012-09-28 17:31 -0700
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Tim Chase <python.list@tim.thechases.com> - 2012-09-28 20:35 -0500
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Paul Rubin <no.email@nospam.invalid> - 2012-09-28 18:42 -0700
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-29 02:58 +0100
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Tim Chase <python.list@tim.thechases.com> - 2012-09-28 21:17 -0500
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Ian Kelly <ian.g.kelly@gmail.com> - 2012-09-28 21:25 -0600
    Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-29 03:30 +0000
      Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Tim Chase <python.list@tim.thechases.com> - 2012-09-28 22:50 -0500
      Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-29 10:38 +0100
      Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Chris Angelico <rosuav@gmail.com> - 2012-09-29 20:05 +1000
      Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-29 11:50 +0100
      Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Ian Kelly <ian.g.kelly@gmail.com> - 2012-09-29 11:04 -0600
      Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Chris Angelico <rosuav@gmail.com> - 2012-09-30 09:26 +1000
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Tim Chase <python.list@tim.thechases.com> - 2012-09-28 22:42 -0500
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-09-29 00:25 -0400
  Re: write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. Fg Nu <fgnu32@yahoo.com> - 2012-09-28 21:25 -0700

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