Merge branch '3.14' of https://github.com/python/cpython into 3.14

Author: hugovk

.github/CODEOWNERS

@@ -326,3 +326,8 @@ Modules/_xxtestfuzz/          @ammaraskar
 **/*templateobject*           @lysnikolaou
 **/*templatelib*              @lysnikolaou
 **/*tstring*                  @lysnikolaou
+
+# Remote debugging
+Python/remote_debug.h         @pablogsal
+Python/remote_debugging.c     @pablogsal
+Modules/_remote_debugging_module.c @pablogsal @ambv @1st1

.github/workflows/tail-call.yml

@@ -137,4 +137,3 @@ jobs:
           CC=clang-20 ./configure --with-tail-call-interp --disable-gil
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-

.pre-commit-config.yaml

@@ -43,12 +43,14 @@ repos:
         exclude: ^Lib/test/test_tomllib/
       - id: check-yaml
       - id: end-of-file-fixer
-        types: [python]
+        types_or: [python, yaml]
         exclude: Lib/test/tokenizedata/coding20731.py
+      - id: end-of-file-fixer
+        files: '^\.github/CODEOWNERS$'
       - id: trailing-whitespace
-        types_or: [c, inc, python, rst]
+        types_or: [c, inc, python, rst, yaml]
       - id: trailing-whitespace
-        files: '\.(gram)$'
+        files: '^\.github/CODEOWNERS|\.(gram)$'
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
     rev: 0.33.0

.readthedocs.yml

@@ -32,4 +32,3 @@ build:
     - make -C Doc venv html
     - mkdir _readthedocs
     - mv Doc/build/html _readthedocs/html
-

Doc/data/python3.14.abi

@@ -1228,10 +1228,22 @@ Special attributes
        :attr:`__annotations__ attributes <object.__annotations__>`.
 
        For best practices on working with :attr:`~object.__annotations__`,
-       please see :mod:`annotationlib`. Where possible, use
+       please see :mod:`annotationlib`. Use
        :func:`annotationlib.get_annotations` instead of accessing this
        attribute directly.
 
+       .. warning::
+
+          Accessing the :attr:`!__annotations__` attribute directly
+          on a class object may return annotations for the wrong class, specifically
+          in certain cases where the class, its base class, or a metaclass
+          is defined under ``from __future__ import annotations``.
+          See :pep:`749 <749#pep749-metaclasses>` for details.
+
+          This attribute does not exist on certain builtin classes. On
+          user-defined classes without ``__annotations__``, it is an
+          empty dictionary.
+
        .. versionchanged:: 3.14
           Annotations are now :ref:`lazily evaluated <lazy-evaluation>`.
           See :pep:`649`.

Doc/reference/datamodel.rst

@@ -74,7 +74,7 @@ deferred evaluation of annotations (:pep:`649`),
 and a new type of interpreter that uses tail calls.
 
 The library changes include the addition of a new :mod:`!annotationlib` module
-for introspecting and wrapping annotations (:pep:`649`),
+for introspecting and wrapping annotations (:pep:`749`),
 a new :mod:`!compression.zstd` module for Zstandard support (:pep:`784`),
 plus syntax highlighting in the REPL,
 as well as the usual deprecations and removals,
@@ -444,6 +444,10 @@ In particular, do not read annotations directly from the namespace dictionary
 attribute of type objects. Use :func:`annotationlib.get_annotate_from_class_namespace`
 during class construction and :func:`annotationlib.get_annotations` afterwards.
 
+In previous releases, it was sometimes possible to access class annotations from
+an instance of an annotated class. This behavior was undocumented and accidental,
+and will no longer work in Python 3.14.
+
 ``from __future__ import annotations``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -2501,6 +2505,11 @@ Changes in the Python API
   See :ref:`above <whatsnew314-typing-union>` for more details.
   (Contributed by Jelle Zijlstra in :gh:`105499`.)
 
+* The runtime behavior of annotations has changed in various ways; see
+  :ref:`above <whatsnew314-pep649>` for details. While most code that interacts
+  with annotations should continue to work, some undocumented details may behave
+  differently.
+
 
 Build changes
 =============

Doc/whatsnew/3.14.rst

@@ -385,6 +385,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(data)
         STRUCT_FOR_ID(database)
         STRUCT_FOR_ID(day)
+        STRUCT_FOR_ID(debug)
         STRUCT_FOR_ID(decode)
         STRUCT_FOR_ID(decoder)
         STRUCT_FOR_ID(default)