[Python-Dev] PEP 520: Preserving Class Attribute Definition Order (round 5) (original) (raw)
Armin Rigo arigo at tunes.org
Mon Jun 27 02:34:28 EDT 2016
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Hi,
On 24 June 2016 at 23:52, Eric Snow <ericsnowcurrently at gmail.com> wrote:
Pending feedback, the impact on Python implementations is expected to be minimal. If a Python implementation cannot support switching to `OrderedDict
-by-default then it can always set_definitionorder__ _toNone``.
That's wishful thinking. Any Python implementation that sets
__definition_order__ to None where CPython sets it to something
useful is likely going to break programs and be deemed not fully
compatible. (Note: this PEP is not a problem for PyPy.)
A bientôt,
Armin.
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