Merge remote-tracking branch 'origin/main' into longobject-vshift-vectorize

# Conflicts:
#	Objects/longobject.c

Author: eendebakpt

.github/CODEOWNERS

@@ -510,6 +510,13 @@ Doc/library/importlib.resources.rst       @jaraco @warsaw @FFY00
 Lib/importlib/resources/                  @jaraco @warsaw @FFY00
 Lib/test/test_importlib/resources/        @jaraco @warsaw @FFY00
 
+# IO
+Doc/library/io.rst            @cmaloney
+Lib/_pyio.py                  @cmaloney
+Lib/io.py                     @cmaloney
+Lib/test/test_io/             @cmaloney
+Modules/_io/                  @cmaloney
+
 # Itertools
 Doc/library/itertools.rst     @rhettinger
 Lib/test/test_itertools.py    @rhettinger

.github/workflows/reusable-emscripten.yml

@@ -39,7 +39,7 @@ jobs:
             f.write(f"node-version={config['node-version']}\n")
             f.write(f"deps-hash={h.hexdigest()}\n")
         with open(os.environ["GITHUB_ENV"], "a") as f:
-            f.write(f"EMSDK_CACHE={emsdk_cache}\n")
+            f.write(f"PY_EMSDK_CACHE={emsdk_cache}\n")
     - name: "Install Node.js"
       uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
       with:
@@ -48,7 +48,7 @@ jobs:
       id: emsdk-cache
       uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
       with:
-        path: ${{ env.EMSDK_CACHE }}
+        path: ${{ env.PY_EMSDK_CACHE }}
         key: emsdk-${{ steps.emscripten-config.outputs.emscripten-version }}-${{ steps.emscripten-config.outputs.deps-hash }}
         restore-keys: emsdk-${{ steps.emscripten-config.outputs.emscripten-version }}
     - name: "Install Python"

.github/workflows/reusable-macos.yml

@@ -51,6 +51,7 @@ jobs:
           --enable-slower-safety \
           --enable-safety \
           ${{ inputs.free-threading && '--disable-gil' || '' }} \
+          --with-tail-call-interp \
           --prefix=/opt/python-dev \
           --with-openssl="$(brew --prefix openssl@3.5)"
     - name: Build CPython

.github/workflows/tail-call.yml

@@ -23,31 +23,6 @@ env:
   LLVM_VERSION: 21
 
 jobs:
-  macos:
-    name: aarch64-apple-darwin/clang
-    runs-on: macos-26
-    timeout-minutes: 60
-    steps:
-      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        with:
-          persist-credentials: false
-      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: '3.11'
-      - name: Install dependencies
-        run: |
-          brew update
-          brew install llvm@${{ env.LLVM_VERSION }}
-      - name: Build
-        run: |
-          export SDKROOT="$(xcrun --show-sdk-path)"
-          export PATH="/opt/homebrew/opt/llvm@${{ env.LLVM_VERSION }}/bin:$PATH"
-          CC=clang-${{ env.LLVM_VERSION }} ./configure --with-tail-call-interp
-          make all --jobs 4
-      - name: Test
-        run: |
-          ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-
   linux:
     name: ${{ matrix.target }}
     runs-on: ${{ matrix.runner }}

Doc/c-api/dict.rst

@@ -507,6 +507,29 @@ Dictionary objects
       modified by another thread.
 
 
+.. c:function:: PyObject* PyDict_AsFrozenDictAndClear(PyObject *dict)
+
+   Return a new :class:`frozendict` created
+   from the existing :class:`dict` instance.
+
+   Transfers all keys and values from *dict*
+   to the newly allocated :class:`!frozendict`.
+   Clears the input *dict* on success.
+   Returns ``NULL`` with the exception set on error.
+
+   This function is intended for building a :class:`!frozendict` instance via
+   a temporary *dict* that is not exposed to user code.
+   To "freeze" an arbitrary dictionary, for example one received from the user
+   as an argument, prefer :c:func:`PyFrozenDict_New` to leave the source
+   intact.
+
+   .. impl-detail::
+
+      Works with O(1) complexity.
+
+   .. versionadded:: next
+
+
 .. c:function:: int PyDict_AddWatcher(PyDict_WatchCallback callback)
 
    Register *callback* as a dictionary watcher. Return a non-negative integer

Doc/c-api/init_config.rst

@@ -155,8 +155,10 @@ UTF-8 encoded string. See :ref:`Configuration Options <pyinitconfig-opts>`.
    * Set *\*value*, and return ``0`` on success.
    * Set an error in *config* and return ``-1`` on error.
 
-   *\*value* can be set to ``NULL`` if the option is an optional string and the
-   option is unset.
+   *\*value* can be set to ``NULL`` if the option is unset or if the option is
+   an optional string.
+   Optional strings are documented with the type ``str | None`` in the
+   :ref:`Configuration Options <pyinitconfig-opts>` table.
 
    On success, the string must be released with ``free(value)`` if it's not
    ``NULL``.
@@ -167,7 +169,7 @@ UTF-8 encoded string. See :ref:`Configuration Options <pyinitconfig-opts>`.
    Get a string list configuration option as an array of
    null-terminated UTF-8 encoded strings.
 
-   * Set *\*length* and *\*value*, and return ``0`` on success.
+   * Set *\*length* and *\*items*, and return ``0`` on success.
    * Set an error in *config* and return ``-1`` on error.
 
    On success, the string list must be released with
@@ -204,6 +206,9 @@ only implemented when ``Py_InitializeFromInitConfig()`` is called, not by the
    Set a string configuration option from a null-terminated UTF-8
    encoded string. The string is copied.
 
+   Options documented with the type ``str | None`` in the :ref:`Configuration
+   Options <pyinitconfig-opts>` table can be set to ``NULL``.
+
    * Return ``0`` on success.
    * Set an error in *config* and return ``-1`` on error.
 
@@ -275,15 +280,15 @@ Configuration Options
      - Public
    * - ``"base_exec_prefix"``
      - :c:member:`base_exec_prefix <PyConfig.base_exec_prefix>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"base_executable"``
      - :c:member:`base_executable <PyConfig.base_executable>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"base_prefix"``
      - :c:member:`base_prefix <PyConfig.base_prefix>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"buffered_stdio"``
      - :c:member:`buffered_stdio <PyConfig.buffered_stdio>`
@@ -331,15 +336,15 @@ Configuration Options
      - Read-only
    * - ``"dump_refs_file"``
      - :c:member:`dump_refs_file <PyConfig.dump_refs_file>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"exec_prefix"``
      - :c:member:`exec_prefix <PyConfig.exec_prefix>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"executable"``
      - :c:member:`executable <PyConfig.executable>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"faulthandler"``
      - :c:member:`faulthandler <PyConfig.faulthandler>`
@@ -359,7 +364,7 @@ Configuration Options
      - Read-only
    * - ``"home"``
      - :c:member:`home <PyConfig.home>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"import_time"``
      - :c:member:`import_time <PyConfig.import_time>`
@@ -385,6 +390,10 @@ Configuration Options
      - :c:member:`isolated <PyConfig.isolated>`
      - ``bool``
      - Read-only
+   * - ``"lazy_imports"``
+     - :c:member:`lazy_imports <PyConfig.lazy_imports>`
+     - ``int``
+     - Public
    * - ``"legacy_windows_fs_encoding"``
      - :c:member:`legacy_windows_fs_encoding <PyPreConfig.legacy_windows_fs_encoding>`
      - ``bool``
@@ -431,35 +440,35 @@ Configuration Options
      - Public
    * - ``"prefix"``
      - :c:member:`prefix <PyConfig.prefix>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"program_name"``
      - :c:member:`program_name <PyConfig.program_name>`
      - ``str``
      - Read-only
    * - ``"pycache_prefix"``
      - :c:member:`pycache_prefix <PyConfig.pycache_prefix>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"quiet"``
      - :c:member:`quiet <PyConfig.quiet>`
      - ``bool``
      - Public
    * - ``"run_command"``
      - :c:member:`run_command <PyConfig.run_command>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"run_filename"``
      - :c:member:`run_filename <PyConfig.run_filename>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"run_module"``
      - :c:member:`run_module <PyConfig.run_module>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"run_presite"``
      - :c:member:`run_presite <PyConfig.run_presite>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"safe_path"``
      - :c:member:`safe_path <PyConfig.safe_path>`
@@ -479,15 +488,15 @@ Configuration Options
      - Read-only
    * - ``"stdio_encoding"``
      - :c:member:`stdio_encoding <PyConfig.stdio_encoding>`
-     - ``str``
+     - ``str | None``
      - Read-only
    * - ``"stdio_errors"``
      - :c:member:`stdio_errors <PyConfig.stdio_errors>`
      - ``str``
      - Read-only
    * - ``"stdlib_dir"``
      - :c:member:`stdlib_dir <PyConfig.stdlib_dir>`
-     - ``str``
+     - ``str | None``
      - Public
    * - ``"tracemalloc"``
      - :c:member:`tracemalloc <PyConfig.tracemalloc>`
@@ -542,6 +551,9 @@ Configuration Options
      - ``bool``
      - Read-only
 
+The type ``str | None`` means that the option is an optional string which can
+be set to ``NULL``.
+
 Visibility:
 
 * Public: Can be retrieved by :c:func:`PyConfig_Get` and set by
@@ -1591,6 +1603,21 @@ PyConfig
       See also the :ref:`Isolated Configuration <init-isolated-conf>` and
       :c:member:`PyPreConfig.isolated`.
 
+   .. c:member:: int lazy_imports
+
+      Control :ref:`lazy imports <lazy-imports>`.
+
+      A value of ``-1`` keeps the default behaviour, where only imports marked
+      with the ``lazy`` keyword are lazy. A value of ``1`` makes every import
+      lazy. ``0`` is rejected.
+
+      Configured by the :option:`-X lazy_imports <-X>` command line option or
+      the :envvar:`PYTHON_LAZY_IMPORTS` environment variable.
+
+      Default: ``-1``.
+
+      .. versionadded:: 3.15
+
    .. c:member:: int legacy_windows_stdio
 
       If non-zero, use :class:`io.FileIO` instead of
@@ -1948,7 +1975,7 @@ PyConfig
       If equals to zero, ignore the :ref:`environment variables
       <using-on-envvars>`.
 
-      Set to ``0`` by the :option:`-E` environment variable.
+      Set to ``0`` by the :option:`-E` command-line option.
 
       Default: ``1`` in Python config and ``0`` in isolated config.
 

Doc/c-api/interp-lifecycle.rst

@@ -575,9 +575,9 @@ Process-wide parameters
    formed from the "official" name of the operating system, converted to lower
    case, followed by the major revision number; e.g., for Solaris 2.x, which is
    also known as SunOS 5.x, the value is ``'sunos5'``.  On macOS, it is
-   ``'darwin'``.  On Windows, it is ``'win'``.  The returned string points into
-   static storage; the caller should not modify its value.  The value is available
-   to Python code as ``sys.platform``.
+   ``'darwin'``.  On Windows, it is ``'win32'``.  The returned string points
+   into static storage; the caller should not modify its value.  The value is
+   available to Python code as ``sys.platform``.
 
 
 .. c:function:: const char* Py_GetCopyright()

Doc/c-api/long.rst

@@ -596,7 +596,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Macro for converting a Python integer into a process identifier.
 
    This can be defined as an alias to :c:func:`PyLong_AsLong`,
-   :c:func:`PyLong_FromLongLong`, or :c:func:`PyLong_AsInt`, depending on the
+   :c:func:`PyLong_AsLongLong`, or :c:func:`PyLong_AsInt`, depending on the
    size of the system's PID type.
 
    .. versionadded:: 3.2

Doc/c-api/module.rst

@@ -337,7 +337,7 @@ Creation and initialization slots
 
    .. versionchanged:: 3.15
 
-      The *slots* argument may be a ``ModuleSpec``-like object, rather than
+      The *spec* argument may be a ``ModuleSpec``-like object, rather than
       a true :py:class:`~importlib.machinery.ModuleSpec` instance.
       Note that previous versions of CPython did not enforce this.
 

Doc/c-api/slots.rst

@@ -197,7 +197,7 @@ Convenience macros
          {NAME, PySlot_INTPTR, {0}, {(void*)(VALUE)}}
 
       #define PySlot_PTR_STATIC(NAME, VALUE) \
-         {NAME, PySlot_INTPTR|Py_SLOT_STATIC, {0}, {(void*)(VALUE)}}
+         {NAME, PySlot_INTPTR|PySlot_STATIC, {0}, {(void*)(VALUE)}}
 
    .. versionadded:: 3.15