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bpo-23722: Fix docs for future __classcell__ changes. (GH-6999) (GH-7000) 

(cherry picked from commit 8ae8e6af37)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot) 2018-05-19 22:49:13 -07:00 committed by Serhiy Storchaka
parent 15f3d0cc76
commit f0af69faee
2 changed files with 3 additions and 2 deletions
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2
Doc/reference/datamodel.rst
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@ -1968,7 +1968,7 @@ current call is identified based on the first argument passed to the method.
be propagated up to the ``type.__new__`` call in order for the class to be
initialised correctly.
Failing to do so will result in a :exc:`DeprecationWarning` in Python 3.6,
and a :exc:`RuntimeWarning` in the future.
and a :exc:`RuntimeError` in Python 3.8.
When using the default metaclass :class:`type`, or any metaclass that ultimately
calls ``type.__new__``, the following additional customisation steps are

3
Doc/whatsnew/3.6.rst
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@ -2261,7 +2261,8 @@ Changes in the Python API
direct references from methods to the implicit ``__class__`` closure
variable, the implicit ``__classcell__`` namespace entry must now be passed
up to ``type.__new__`` for initialisation. Failing to do so will result in
a :exc:`DeprecationWarning` in 3.6 and a :exc:`RuntimeWarning` in the future.
a :exc:`DeprecationWarning` in Python 3.6 and a :exc:`RuntimeError` in
Python 3.8.
Changes in the C API
--------------------