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[3.12] gh-120426: Add the glossary term "immortal" (GH-123191) (GH-123491) (#123636)

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Add the glossary term "immortal", mark it as an implementation detail

(cherry picked from commit 6754566a51)
(cherry picked from commit 1af74fa652)

(Unlike the original commits, this adds the entire entry.)
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Petr Viktorin 2024-09-06 15:46:05 +02:00 • committed by GitHub
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Doc/glossary.rst
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@ -591,6 +591,14 @@ Glossary
:ref:`idle` is a basic editor and interpreter environment
which ships with the standard distribution of Python.
immortal
*Immortal objects* are a CPython implementation detail introduced
in :pep:`683`.
If an object is immortal, its :term:`reference count` is never modified,
and therefore it is never deallocated while the interpreter is running.
For example, :const:`True` and :const:`None` are immortal in CPython.
immutable
An object with a fixed value. Immutable objects include numbers, strings and
tuples. Such an object cannot be altered. A new object has to