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Thu Jan 31 03:04:36 EST 2019 · http://mail.python.org/pipermail/python-dev/2019-January/156165.html

Waiting on review
https://github.com/python/cpython/pull/8014

On Thu, Jan 31, 2019, 12:04 AM INADA Naoki <songofacandy at gmail.com wrote:

> I'm sorry, configparser is changed already.
> https://bugs.python.org/issue33504
>
> On Thu, Jan 31, 2019 at 4:52 PM INADA Naoki <songofacandy at gmail.com>
> wrote:
> >
> > Hi,
> >
> > csv.DictReader uses OrderedDict by default, from Python 3.6.
> > But it doesn't make sense anymore, like namedtuple._asdict().
> > How about changing default dict type back to regular dict.
> >
> > Python is widely used for handling learge data.  So I think
> > changing default dict type to OrderedDict was performance
> > and memory usage regression in 3.6.
> >
> > Additionally, configparser uses OrderedDict by default from Python 3.6
> too.
> >
> > I am not sure about `parser['section1'] == parser['section2']` is not
> used yet.
> > But we broke it once in 3.6 by changing dict to OrderedDict.  Are there
> any
> > issue report caused by this backward incompatibility?
> >
> > And I think performance and memory efficiency is not so important for
> > configparser, unlike csv.
> >
> > I'm
> >
> > * +1 about changing csv.DictReader's default dict type
> > * +0.5 about changing configparser's default dict type.
> >
> > How do you think?
> >
> > Regards,
> > --
> > INADA Naoki  <songofacandy at gmail.com>
>
>
>
> --
> INADA Naoki  <songofacandy at gmail.com>
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[Python-Dev] How about updating OrderedDict in csv and configparser to regular dict?