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Tue Feb 12 11:22:28 CET 2013 · https://mail.python.org/pipermail/python-dev/2013-February/123977.html

Le Mon, 11 Feb 2013 11:02:04 -0800,
Guido van Rossum <guido at python.org> a écrit :
> Warning: see http://bugs.python.org/issue17170. Depending on the
> length of the string being scanned and the probability of finding the
> specific character, the proposed change could actually be a
> *pessimization*. OTOH if the character occurs many times, the slice
> will actually cause O(N**2) behavior. So yes, it depends greatly on
> the distribution of the input data.

That said, the savings are still puny unless you spend your time
calling str.find().

Regards

Antoine.

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[Python-Dev] Question regarding: Lib/_markupbase.py