Merge branch 'main' of https://github.com/python/cpython into issue-142663

Author: superboy-zjc

.github/workflows/lint.yml

@@ -22,7 +22,4 @@ jobs:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.x"
-      - uses: pre-commit/action@v3.0.1
+      - uses: j178/prek-action@v1

.github/zizmor.yml

@@ -1,4 +1,4 @@
-# Configuration for the zizmor static analysis tool, run via pre-commit in CI
+# Configuration for the zizmor static analysis tool, run via prek in CI
 # https://woodruffw.github.io/zizmor/configuration/
 rules:
   dangerous-triggers:

Doc/library/concurrent.futures.rst

@@ -308,7 +308,7 @@ the bytes over a shared :mod:`socket <socket>` or
 
    .. note::
       The executor may replace uncaught exceptions from *initializer*
-      with :class:`~concurrent.futures.interpreter.ExecutionFailed`.
+      with :class:`~concurrent.interpreters.ExecutionFailed`.
 
    Other caveats from parent :class:`ThreadPoolExecutor` apply here.
 
@@ -320,11 +320,11 @@ likewise serializes the return value when sending it back.
 When a worker's current task raises an uncaught exception, the worker
 always tries to preserve the exception as-is.  If that is successful
 then it also sets the ``__cause__`` to a corresponding
-:class:`~concurrent.futures.interpreter.ExecutionFailed`
+:class:`~concurrent.interpreters.ExecutionFailed`
 instance, which contains a summary of the original exception.
 In the uncommon case that the worker is not able to preserve the
 original as-is then it directly preserves the corresponding
-:class:`~concurrent.futures.interpreter.ExecutionFailed`
+:class:`~concurrent.interpreters.ExecutionFailed`
 instance instead.
 
 
@@ -379,6 +379,11 @@ in a REPL or a lambda should not be expected to work.
    default in absence of a *mp_context* parameter. This feature is incompatible
    with the "fork" start method.
 
+   .. note::
+      Bugs have been reported when using the *max_tasks_per_child* feature that
+      can result in the :class:`ProcessPoolExecutor` hanging in some
+      circumstances. Follow its eventual resolution in :gh:`115634`.
+
    .. versionchanged:: 3.3
       When one of the worker processes terminates abruptly, a
       :exc:`~concurrent.futures.process.BrokenProcessPool` error is now raised.
@@ -715,15 +720,6 @@ Exception classes
 
    .. versionadded:: 3.14
 
-.. exception:: ExecutionFailed
-
-   Raised from :class:`~concurrent.futures.InterpreterPoolExecutor` when
-   the given initializer fails or from
-   :meth:`~concurrent.futures.Executor.submit` when there's an uncaught
-   exception from the submitted task.
-
-   .. versionadded:: 3.14
-
 .. currentmodule:: concurrent.futures.process
 
 .. exception:: BrokenProcessPool

Doc/library/multiprocessing.rst

@@ -1693,11 +1693,14 @@ inherited by child processes.
    value is actually a synchronized wrapper for the array.
 
    *typecode_or_type* determines the type of the elements of the returned array:
-   it is either a ctypes type or a one character typecode of the kind used by
-   the :mod:`array` module.  If *size_or_initializer* is an integer, then it
-   determines the length of the array, and the array will be initially zeroed.
-   Otherwise, *size_or_initializer* is a sequence which is used to initialize
-   the array and whose length determines the length of the array.
+   it is either a :ref:`ctypes type <ctypes-fundamental-data-types>` or a one
+   character typecode of the kind used by the :mod:`array` module with the
+   exception of ``'w'``, which is not supported.  In addition, the ``'c'``
+   typecode is an alias for :class:`ctypes.c_char`.  If *size_or_initializer*
+   is an integer, then it determines the length of the array, and the array
+   will be initially zeroed. Otherwise, *size_or_initializer* is a sequence
+   which is used to initialize the array and whose length determines the length
+   of the array.
 
    If *lock* is ``True`` (the default) then a new lock object is created to
    synchronize access to the value.  If *lock* is a :class:`Lock` or

Doc/library/profiling.sampling.rst

@@ -1490,6 +1490,13 @@ Output options
    named ``<format>_<PID>.<ext>`` (for example, ``flamegraph_12345.html``).
    :option:`--heatmap` creates a directory named ``heatmap_<PID>``.
 
+.. option:: --browser
+
+   Automatically open HTML output (:option:`--flamegraph` and
+   :option:`--heatmap`) in your default web browser after generation.
+   When profiling with :option:`--subprocesses`, only the main process
+   opens the browser; subprocess outputs are never auto-opened.
+
 
 pstats display options
 ----------------------

Doc/library/textwrap.rst

@@ -102,6 +102,10 @@ functions should be good enough; otherwise, you should use an instance of
           print(repr(s))          # prints '    hello\n      world\n    '
           print(repr(dedent(s)))  # prints 'hello\n  world\n'
 
+   .. versionchanged:: 3.14
+      The :func:`!dedent` function now correctly normalizes blank lines containing
+      only whitespace characters. Previously, the implementation only normalized
+      blank lines containing tabs and spaces.
 
 .. function:: indent(text, prefix, predicate=None)
 

Doc/requirements.txt

@@ -7,7 +7,7 @@
 # won't suddenly cause build failures. Updating the version is fine as long
 # as no warnings are raised by doing so.
 # Keep this version in sync with ``Doc/conf.py``.
-sphinx~=9.0.0
+sphinx<9.0.0
 
 blurb
 

Doc/tutorial/appendix.rst

@@ -14,8 +14,7 @@ There are two variants of the interactive :term:`REPL`.  The classic
 basic interpreter is supported on all platforms with minimal line
 control capabilities.
 
-On Windows, or Unix-like systems with :mod:`curses` support,
-a new interactive shell is used by default since Python 3.13.
+Since Python 3.13, a new interactive shell is used by default.
 This one supports color, multiline editing, history browsing, and
 paste mode.  To disable color, see :ref:`using-on-controlling-color` for
 details.  Function keys provide some additional functionality.

Doc/whatsnew/3.14.rst

@@ -2265,6 +2265,15 @@ pdb
   (Contributed by Tian Gao in :gh:`124533`.)
 
 
+textwrap
+--------
+
+* Optimize the :func:`~textwrap.dedent` function, improving performance by
+  an average of 2.4x, with larger improvements for bigger inputs,
+  and fix a bug with incomplete normalization of blank lines with whitespace
+  characters other than space and tab.
+
+
 uuid
 ----
 

Doc/whatsnew/3.15.rst

@@ -428,6 +428,13 @@ argparse
   inline code when color output is enabled.
   (Contributed by Savannah Ostrowski in :gh:`142390`.)
 
+base64 & binascii
+-----------------
+
+* CPython's underlying base64 implementation now encodes 2x faster and decodes 3x
+  faster thanks to simple CPU pipelining optimizations.
+  (Contributed by Gregory P. Smith & Serhiy Storchaka in :gh:`143262`.)
+
 calendar
 --------