Le dimanche 2 septembre 2012 11:07:35 UTC+2, Ian a écrit :
> On Sun, Sep 2, 2012 at 1:36 AM, <wxjmfa...@gmail.com> wrote:
>
> > I still remember my thoughts when I read the PEP 393
>
> > discussion: "this is not logical", "they do no understand
>
> > typography", "atomic character ???", ...
>
>
>
> That would indicate one of two possibilities. Either:
>
>
>
> 1) Everybody in the PEP 393 discussion except for you is clueless
>
> about how to implement a Unicode type; or
>
>
>
> 2) You are clueless about how to implement a Unicode type.
>
>
>
> Taking into account Occam's razor, and also that you seem to be unable
>
> or unwilling to offer a solid rationale for those thoughts, I have to
>
> say that I'm currently leaning toward the second possibility.
>
>
>
>
>
> > Real world exemples.
>
> >
>
> >>>> import libfrancais
>
> >>>> li = ['noël', 'noir', 'nœud', 'noduleux', \
>
> > ... 'noétique', 'noèse', 'noirâtre']
>
> >>>> r = libfrancais.sortfr(li)
>
> >>>> r
>
> > ['noduleux', 'noël', 'noèse', 'noétique', 'nœud', 'noir',
>
> > 'noirâtre']
>
>
>
> libfrancais does not appear to be publicly available. It's not listed
>
> in PyPI, and googling for "python libfrancais" turns up nothing
>
> relevant.
>
>
>
> Rewriting the example to use locale.strcoll instead:
>
>
>
> >>> li = ['noël', 'noir', 'nœud', 'noduleux', 'noétique', 'noèse', 'noirâtre']
>
> >>> import locale
>
> >>> locale.setlocale(locale.LC_ALL, 'French_France')
>
> 'French_France.1252'
>
> >>> import functools
>
> >>> sorted(li, key=functools.cmp_to_key(locale.strcoll))
>
> ['noduleux', 'noël', 'noèse', 'noétique', 'nœud', 'noir', 'noirâtre']
>
>
>
> # Python 3.2
>
> >>> import timeit
>
> >>> timeit.repeat("sorted(li, key=functools.cmp_to_key(locale.strcoll))",
> >>> "import functools; import locale; li = ['noël', 'noir', 'nœud',
> >>> 'noduleux', 'noétique', 'noèse', 'noirâtre']", number=10000)
>
> [0.5544277025009592, 0.5370117249557325, 0.5551836677925053]
>
>
>
> # Python 3.3
>
> >>> import timeit
>
> >>> timeit.repeat("sorted(li, key=functools.cmp_to_key(locale.strcoll))",
> >>> "import functools; import locale; li = ['noël', 'noir', 'nœud',
> >>> 'noduleux', 'noétique', 'noèse', 'noirâtre']", number=10000)
>
> [0.1421166788364303, 0.12389078130001963, 0.13184190553613462]
>
>
> As you can see, Python 3.3 is about 77% faster than Python 3.2 on this
>
> example. If this was intended to show that the Python 3.3 Unicode
>
> representation is a regression over the Python 3.2 implementation,
>
> then it's a complete failure as an example.
- Unfortunately, I got opposite and even much worst results on my win box,
considering
- libfrancais is one of my module and it does a little bit more than
the std sorting tools.
My rationale: very simple.
1) I never heard about something better than sticking with one
of the Unicode coding scheme. (genreral theory)
2) I am not at all convinced by the "new" Py 3.3 algorithm. I'm not the
only one guy, who noticed problems. Arguing, "it is fast enough", is not
a correct answer.
jmf
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