Documentation for `multiprocessing` module wrongly states that `concurrent.futures.ThreadPoolExecutor` does not exist

[paternal]

The documentation for the multiprocessing module reads:

The :mod:multiprocessing module also introduces APIs which do not have
analogs in the :mod:threading module. A prime example of this is the :class:~multiprocessing.pool.Pool object […].

While this is not wrong (there is no such tool in the threading module), it is misleading because such a tool exists elsewhere, in the concurrent.futures module.

Several ways to fix this:

1. Remove this sentence:

   diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
   index d18ada3511..02d6946f1d 100644
   --- a/Doc/library/multiprocessing.rst
   +++ b/Doc/library/multiprocessing.rst
   @@ -22,8 +22,7 @@ to this, the :mod:`multiprocessing` module allows the programmer to fully
    leverage multiple processors on a given machine.  It runs on both POSIX and
    Windows.
    
   -The :mod:`multiprocessing` module also introduces APIs which do not have
   -analogs in the :mod:`threading` module.  A prime example of this is the
   +The :mod:`multiprocessing` module also introduces the
    :class:`~multiprocessing.pool.Pool` object which offers a convenient means of
    parallelizing the execution of a function across multiple input values,
    distributing the input data across processes (data parallelism).  The following

2. Give another example of a feature absent from the threading module:

   diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
   index d18ada3511..684e389f21 100644
   --- a/Doc/library/multiprocessing.rst
   +++ b/Doc/library/multiprocessing.rst
   @@ -22,8 +22,7 @@ to this, the :mod:`multiprocessing` module allows the programmer to fully
    leverage multiple processors on a given machine.  It runs on both POSIX and
    Windows.
    
   -The :mod:`multiprocessing` module also introduces APIs which do not have
   -analogs in the :mod:`threading` module.  A prime example of this is the
   +The :mod:`multiprocessing` module also introduces the
    :class:`~multiprocessing.pool.Pool` object which offers a convenient means of
    parallelizing the execution of a function across multiple input values,
    distributing the input data across processes (data parallelism).  The following
   @@ -44,6 +43,8 @@ will print to standard output ::
    
       [1, 4, 9]
    
   +The :mod:`multiprocessing` module also introduces APIs which do not have
   +analogs in the :mod:`threading` module, like the ability to :meth:`terminate <Process.terminate>`, :meth:`interrupt <Process.interrupt>` or :meth:`kill <Process.kill>` a running process.
    
    .. seealso::
    

Thanks for your work!

Linked PRs

• gh-140578: Clarify multiprocessing docs to mention ThreadPoolExecutor #140604
• gh-140578: Doc: Remove sencence implying that concurrent.futures.ThreadPoolExecutor does not exist #140689