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Re: python 3 problem: how to convert an extension method into a class Method

From Robin Becker <robin@reportlab.com>
Subject Re: python 3 problem: how to convert an extension method into a class Method
Date 2013-02-27 11:28 +0000
References <512CEF0C.3020906@chamonix.reportlab.co.uk> <kgivf6$ojl$1@ger.gmane.org> <512DE1AB.7000100@chamonix.reportlab.co.uk> <kgkpp6$rvm$1@ger.gmane.org>
Newsgroups comp.lang.python
Message-ID <mailman.2613.1361964551.2939.python-list@python.org> (permalink)

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On 27/02/2013 11:14, Peter Otten wrote:
........
> I think you misunderstood. You compare the time it takes to run the function
> coded in C and its Python equivalent -- that difference is indeed
> significant.
>

indeed. The function call overhead there looks pretty small so perhaps that's 
the way forward.

> But what I was trying to measure was the difference between two ways to wrap
> the C function:
........
> I expect that you will get a similar result with your actual cfunc and
> therefore can (and should IMO) use method (1) in both Python 2 and 3
> -- but of course not being able to measure it myself it may turn out I'm
> wrong.
>

Thanks, I suspect function calls have got faster in later pythons so my fear of 
the wrapper is outdated.

As others have pointed out I should probably be creating a method in C then I 
should be able to do something like


class A:
      def meth(self):
        .....

from extension import c_dummy_class

A.meth = c_dummy_class.c_meth
-- 
Robin Becker

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Re: python 3 problem: how to convert an extension method into a class Method Robin Becker <robin@reportlab.com> - 2013-02-27 11:28 +0000

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