Re: Incompatible change discussion: Pretty printing of ordered dict.

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I don't have a particular concrete use case, but as an experienced Python
programmer who knows that dicts are conceptually unordered, I like the
sorted presentation and would be sorry to lose it. It makes it easier to
quickly find something in a dict if its shown in alphabetical order.

If the dict maintaining insertion order becomes a language feature rather
than an implementation detail, I would favour showing that. But for now
it's an implementation detail, so it shouldn't change how we think about
dicts.

Thomas

On 2 August 2017 at 19:44, Matthias Bussonnier <[email protected]
> wrote:

> Hi all,
>
> As you may or may not be aware, with Python 3.6 the dictionary are
> ordered by default. It is technically an implementation detail, though
> some people would love for it not to.
>
> Regardless, IPython has for a long time pretty-printed the dictionary
> with _sorted_ keys, this thus prevent to teach python and show that
> dictionaries maintain order. Thus there is the question of wether we
> should disable sorting keys while pretty-printing.
>
> https://github.com/ipython/ipython/issues/10110
>
> This seem like a minor change, but I'd like to know if some of you are
> _relying_ on the ordering of dict when they are printed, or have
> compelling arguments against (or for) removing sorting of the keys
> before pretty_printing.
>
> If you care about the above subject, please have your voice heard in
> above issue.
>
> Thanks,
> --
> Matthias
> _______________________________________________
> IPython-dev mailing list
> [email protected]
> https://mail.python.org/mailman/listinfo/ipython-dev
>

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<div dir=3D"ltr"><div><div>I don&#39;t have a particular concrete use case,=
 but as an experienced Python programmer who knows that dicts are conceptua=
lly unordered, I like the sorted presentation and would be sorry to lose it=
. It makes it easier to quickly find something in a dict if its shown in al=
phabetical order.<br><br></div>If the dict maintaining insertion order beco=
mes a language feature rather than an implementation detail, I would favour=
 showing that. But for now it&#39;s an implementation detail, so it shouldn=
&#39;t change how we think about dicts.<br><br></div>Thomas<br></div><div c=
lass=3D"gmail_extra"><br><div class=3D"gmail_quote">On 2 August 2017 at 19:=
44, Matthias Bussonnier <span dir=3D"ltr">&lt;<a href=3D"mailto:bussonnierm=
[email protected]" target=3D"_blank">[email protected]</a>&gt;</=
span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
<br>
As you may or may not be aware, with Python 3.6 the dictionary are<br>
ordered by default. It is technically an implementation detail, though<br>
some people would love for it not to.<br>
<br>
Regardless, IPython has for a long time pretty-printed the dictionary<br>
with _sorted_ keys, this thus prevent to teach python and show that<br>
dictionaries maintain order. Thus there is the question of wether we<br>
should disable sorting keys while pretty-printing.<br>
<br>
<a href=3D"https://github.com/ipython/ipython/issues/10110" rel=3D"noreferr=
er" target=3D"_blank">https://github.com/ipython/<wbr>ipython/issues/10110<=
/a><br>
<br>
This seem like a minor change, but I&#39;d like to know if some of you are<=
br>
_relying_ on the ordering of dict when they are printed, or have<br>
compelling arguments against (or for) removing sorting of the keys<br>
before pretty_printing.<br>
<br>
If you care about the above subject, please have your voice heard in<br>
above issue.<br>
<br>
Thanks,<br>
<span class=3D"HOEnZb"><font color=3D"#888888">--<br>
Matthias<br>
______________________________<wbr>_________________<br>
IPython-dev mailing list<br>
<a href=3D"mailto:[email protected]">[email protected]</a><br>
<a href=3D"https://mail.python.org/mailman/listinfo/ipython-dev" rel=3D"nor=
eferrer" target=3D"_blank">https://mail.python.org/<wbr>mailman/listinfo/ip=
ython-dev</a><br>
</font></span></blockquote></div><br></div>

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