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From: Serhiy Storchaka <storchaka@gmail.com>
Subject: Re: Find and Replace Simplification
Date: Fri, 19 Jul 2013 20:29:20 +0300
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Xref: csiph.com comp.lang.python:50917

19.07.13 19:22, Steven D'Aprano написав(ла):
> I also expect that the string replace() method will be second fastest,
> and re.sub will be the slowest, by a very long way.

The string replace() method is fastest (at least in Python 3.3+). See 
implementation of html.escape() etc.