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Date: Thu, 31 Mar 2011 20:58:42 -0500
From: Tim Chase <python.list@tim.thechases.com>
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To: candide <candide@free.invalid>
Subject: Re: Extracting subsequences composed of the same character
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On 03/31/2011 07:43 PM, candide wrote:
> Suppose you have a string, for instance
>
> "pyyythhooonnn --->  ++++"
>
> and you search for the subquences composed of the same character, here
> you get :
>
> 'yyy', 'hh', 'ooo', 'nnn', '---', '++++'

 >>> import re
 >>> s = "pyyythhooonnn ---> ++++"
 >>> [m.group(0) for m in re.finditer(r"(.)\1+", s)]
['yyy', 'hh', 'ooo', 'nnn', '---', '++++']
 >>> [(m.group(0),m.group(1)) for m in re.finditer(r"(.)\1+", s)]
[('yyy', 'y'), ('hh', 'h'), ('ooo', 'o'), ('nnn', 'n'), ('---', 
'-'), ('++++', '+')]

-tkc