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gh-92436: __future__ docs: add note on expectations for "from __future__ import annotations" (GH-92568) 

(cherry picked from commit 6582c96454)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
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Miss Islington (bot) 2022-05-12 07:37:59 -07:00 committed by GitHub
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@ -90,12 +90,20 @@ language using this mechanism:
| generator_stop | 3.5.0b1 | 3.7 | :pep:`479`: |
| | | | *StopIteration handling inside generators* |
+------------------+-------------+--------------+---------------------------------------------+
| annotations | 3.7.0b1 | 3.11 | :pep:`563`: |
| annotations | 3.7.0b1 | TBD [1]_ | :pep:`563`: |
| | | | *Postponed evaluation of annotations* |
+------------------+-------------+--------------+---------------------------------------------+
.. XXX Adding a new entry? Remember to update simple_stmts.rst, too.
.. [1]
``from __future__ import annotations`` was previously scheduled to
become mandatory in Python 3.10, but the Python Steering Council
twice decided to delay the change
(`announcement for Python 3.10 <https://mail.python.org/archives/list/python-dev@python.org/message/CLVXXPQ2T2LQ5MP2Y53VVQFCXYWQJHKZ/>`__;
`announcement for Python 3.11 <https://mail.python.org/archives/list/python-dev@python.org/message/VIZEBX5EYMSYIJNDBF6DMUMZOCWHARSO/>`__).
No final decision has been made yet. See also :pep:`563` and :pep:`649`.
.. seealso::