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Message from discussion namedtuples in Cython?
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Robert Bradshaw  
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 More options Sep 20 2012, 1:32 pm
From: Robert Bradshaw <rober...@gmail.com>
Date: Thu, 20 Sep 2012 10:32:01 -0700
Local: Thurs, Sep 20 2012 1:32 pm
Subject: Re: [cython-users] namedtuples in Cython?
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On Thu, Sep 20, 2012 at 9:55 AM, Chris Barker <chris.bar...@noaa.gov> wrote:
> I'm thinking of using namedtuples in Cython -- it seems a reasonable
> way to wrap a c struct, and, at least in pure python, lighter weight
> than a class.

> If I'm going to do that, is seems I might as well use the C-API when
> constructing, rather than doing it all with the Python API. But it
> appears the namedtuple is written in pure python, as a subclass of
> tuple.

> Which I suppose means I need to create a nametuple class with the
> Python call, but then I should be able to actually set the fields with
> the C-API for a tuple.

> But is there any point in this anyway -- is, in fact, a cdef class
> just as lightweight (or maybe more lightweight) anyway?

A cdef class is more lightweight, but requires an explicit class for
every set of names you want. (It also has the advantage of storing
members as C values, if you intend to use them a lot from your Cython
code.)

- Robert


 
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