[Python-Dev] Guarantee ordered dict literals in v3.7?

Jim Baker jim.baker at python.org
Sat Nov 4 16:55:58 EDT 2017


+1, as Guido correctly recalls, this language guarantee will work well with
Jython when we get to the point of implementing 3.7+.

On Sat, Nov 4, 2017 at 12:35 PM, Guido van Rossum <guido at python.org> wrote:

> This sounds reasonable -- I think when we introduced this in 3.6 we were
> worried that other implementations (e.g. Jython) would have a problem with
> this, but AFAIK they've reported back that they can do this just fine. So
> let's just document this as a language guarantee.
>
> On Sat, Nov 4, 2017 at 10:30 AM, Stefan Krah <stefan at bytereef.org> wrote:
>
>>
>> Hello,
>>
>> would it be possible to guarantee that dict literals are ordered in v3.7?
>>
>>
>> The issue is well-known and the workarounds are tedious, example:
>>
>>    https://mail.python.org/pipermail/python-ideas/2015-Decembe
>> r/037423.html
>>
>>
>> If the feature is guaranteed now, people can rely on it around v3.9.
>>
>>
>>
>> Stefan Krah
>>
>>
>>
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>
>
>
> --
> --Guido van Rossum (python.org/~guido)
>
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