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Thu Apr 14 20:11:16 EDT 2016 · https://mail.python.org/pipermail/python-dev/2016-April/144183.html

On 2016-04-14 21:42, Armin Rigo wrote:
> Hi Victor,
>
> On 14 April 2016 at 17:19, Victor Stinner <victor.stinner at gmail.com> wrote:
>> Each time a dictionary is created, the global
>> version is incremented and the dictionary version is initialized to the
>> global version.
>
> A detail, but why not set the version tag of new empty dictionaries to
> zero, always?   Same after a clear().  This would satisfy the
> condition: equality of the version tag is supposed to mean "the
> dictionary content is precisely the same".
>
If you did that, wouldn't it then be possible to replace an empty dict 
with another empty dict with you noticing? Would that matter?

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Showing content from https://mail.python.org/pipermail/python-dev/2016-April/144183.html below:

[Python-Dev] RFC: PEP 509: Add a private version to dict