[3.13] gh-74929: PEP 667 general docs update (gh-119291)

* expand on What's New entry for PEP 667 (including porting notes)
* define 'optimized scope' as a glossary term
* cover comprehensions and generator expressions in locals() docs
* review all mentions of "locals" in documentation (updating if needed)
* review all mentions of "f_locals" in documentation (updating if needed)

(cherry picked from commit e870c852c0)

Co-authored-by: Alyssa Coghlan <ncoghlan@gmail.com>
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Miss Islington (bot) 2024-05-21 13:35:26 +02:00 committed by GitHub
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@ -121,17 +121,18 @@ See also :ref:`Reflection <reflection>`.
.. c:function:: PyObject* PyFrame_GetLocals(PyFrameObject *frame)
Get the *frame*'s :attr:`~frame.f_locals` attribute.
If the frame refers to a function or comprehension, this returns
a write-through proxy object that allows modifying the locals.
In all other cases (classes, modules) it returns the :class:`dict`
representing the frame locals directly.
If the frame refers to an :term:`optimized scope`, this returns a
write-through proxy object that allows modifying the locals.
In all other cases (classes, modules, :func:`exec`, :func:`eval`) it returns
the mapping representing the frame locals directly (as described for
:func:`locals`).
Return a :term:`strong reference`.
.. versionadded:: 3.11
.. versionchanged:: 3.13
Return a proxy object for functions and comprehensions.
As part of :pep:`667`, return a proxy object for optimized scopes.
.. c:function:: int PyFrame_GetLineNumber(PyFrameObject *frame)