tj-python · pull · Dec 23, 2025 · Dec 23, 2025 · Dec 23, 2025 · Dec 23, 2025
diff --git a/.github/workflows/tail-call.yml b/.github/workflows/tail-call.yml
@@ -81,22 +81,23 @@ jobs:
 
       - name: Native Windows MSVC (release)
         if: runner.os == 'Windows' && matrix.architecture != 'ARM64'
-        shell: cmd
+        shell: pwsh
         run: |
           choco install visualstudio2026buildtools --no-progress -y --force --params "--add Microsoft.VisualStudio.Component.VC.Tools.x86.x64  --locale en-US --passive"
           $env:PATH = "C:\Program Files (x86)\Microsoft Visual Studio\18\BuildTools\MSBuild\Current\bin;$env:PATH"
-          ./PCbuild/build.bat --tail-call-interp -c Release -p ${{ matrix.architecture }} "/p:PlatformToolset=v145"
+          $env:PlatformToolset = "v145"
+          ./PCbuild/build.bat --tail-call-interp -c Release -p ${{ matrix.architecture }}
           ./PCbuild/rt.bat -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
       # No tests (yet):
       - name: Emulated Windows Clang (release)
         if: runner.os == 'Windows' && matrix.architecture == 'ARM64'
-        shell: cmd
+        shell: pwsh
         run: |
           choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
-          set PlatformToolset=clangcl
-          set LLVMToolsVersion=${{ matrix.llvm }}.1.0
-          set LLVMInstallDir=C:\Program Files\LLVM
+          $env:PlatformToolset = "clangcl"
+          $env:LLVMToolsVersion = "${{ matrix.llvm }}.1.0"
+          $env:LLVMInstallDir = "C:\Program Files\LLVM"
           ./PCbuild/build.bat --tail-call-interp -p ${{ matrix.architecture }}
 
       - name: Native macOS (release)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.13.2
+    rev: v0.14.10
     hooks:
       - id: ruff-check
         name: Run Ruff (lint) on Apple/
@@ -52,7 +52,7 @@ repos:
         files: ^Tools/wasm/
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 25.9.0
+    rev: 25.12.0
     hooks:
       - id: black
         name: Run Black on Tools/jit/
@@ -83,24 +83,24 @@ repos:
         files: '^\.github/CODEOWNERS|\.(gram)$'
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.34.0
+    rev: 0.36.0
     hooks:
       - id: check-dependabot
       - id: check-github-workflows
       - id: check-readthedocs
 
   - repo: https://github.com/rhysd/actionlint
-    rev: v1.7.7
+    rev: v1.7.9
     hooks:
       - id: actionlint
 
   - repo: https://github.com/woodruffw/zizmor-pre-commit
-    rev: v1.14.1
+    rev: v1.19.0
     hooks:
       - id: zizmor
 
   - repo: https://github.com/sphinx-contrib/sphinx-lint
-    rev: v1.0.0
+    rev: v1.0.2
     hooks:
       - id: sphinx-lint
         args: [--enable=default-role]

diff --git a/Doc/deprecations/pending-removal-in-3.15.rst b/Doc/deprecations/pending-removal-in-3.15.rst
@@ -33,16 +33,6 @@ Pending removal in Python 3.15
 
   * ``load_module()`` method: use ``exec_module()`` instead.
 
-* :class:`locale`:
-
-  * The :func:`~locale.getdefaultlocale` function
-    has been deprecated since Python 3.11.
-    Its removal was originally planned for Python 3.13 (:gh:`90817`),
-    but has been postponed to Python 3.15.
-    Use :func:`~locale.getlocale`, :func:`~locale.setlocale`,
-    and :func:`~locale.getencoding` instead.
-    (Contributed by Hugo van Kemenade in :gh:`111187`.)
-
 * :mod:`pathlib`:
 
   * :meth:`!.PurePath.is_reserved`

diff --git a/Doc/library/locale.rst b/Doc/library/locale.rst
@@ -370,8 +370,6 @@ The :mod:`locale` module defines the following exception and functions:
    determined.
    The "C" locale is represented as ``(None, None)``.
 
-   .. deprecated-removed:: 3.11 3.15
-
 
 .. function:: getlocale(category=LC_CTYPE)
 

diff --git a/Doc/tools/check-warnings.py b/Doc/tools/check-warnings.py
@@ -311,8 +311,11 @@ def main(argv: list[str] | None = None) -> int:
     if not Path("Doc").exists() or not Path("Doc").is_dir():
         raise RuntimeError(wrong_directory_msg)
 
-    with Path("Doc/sphinx-warnings.txt").open(encoding="UTF-8") as f:
-        warnings = f.read().splitlines()
+    warnings = (
+        Path("Doc/sphinx-warnings.txt")
+        .read_text(encoding="UTF-8")
+        .splitlines()
+    )
 
     cwd = str(Path.cwd()) + os.path.sep
     files_with_nits = {

diff --git a/Doc/whatsnew/3.15.rst b/Doc/whatsnew/3.15.rst
@@ -562,6 +562,9 @@ locale
   but included in the language code.
   (Contributed by Serhiy Storchaka in :gh:`137729`.)
 
+* Undeprecate the :func:`locale.getdefaultlocale` function.
+  (Contributed by Victor Stinner in :gh:`130796`.)
+
 
 math
 ----
@@ -935,8 +938,8 @@ code results in constants, the code can be simplified by the JIT.
 The JIT avoids :term:`reference count`\ s where possible. This generally
 reduces the cost of most operations in Python.
 
-(Contributed by Ken Jin, Donghee Na, Zheao Li, Savannah Ostrowski,
-Noam Cohen, Tomas Roun, PuQing in :gh:`134584`.)
+(Contributed by Ken Jin, Donghee Na, Zheao Li, Hai Zhu, Savannah Ostrowski,
+Noam Cohen, Tomas Roun, and PuQing in :gh:`134584`.)
 
 .. rubric:: Better machine code generation
 

diff --git a/Include/internal/pycore_object.h b/Include/internal/pycore_object.h
@@ -252,25 +252,6 @@ _Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
     }
 }
 
-static inline void
-_Py_DECREF_NO_DEALLOC(PyObject *op)
-{
-    if (_Py_IsImmortal(op)) {
-        _Py_DECREF_IMMORTAL_STAT_INC();
-        return;
-    }
-    _Py_DECREF_STAT_INC();
-#ifdef Py_REF_DEBUG
-    _Py_DEC_REFTOTAL(PyInterpreterState_Get());
-#endif
-    op->ob_refcnt--;
-#ifdef Py_DEBUG
-    if (op->ob_refcnt <= 0) {
-        _Py_FatalRefcountError("Expected a positive remaining refcount");
-    }
-#endif
-}
-
 #else
 // TODO: implement Py_DECREF specializations for Py_GIL_DISABLED build
 static inline void
@@ -279,12 +260,6 @@ _Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
     Py_DECREF(op);
 }
 
-static inline void
-_Py_DECREF_NO_DEALLOC(PyObject *op)
-{
-    Py_DECREF(op);
-}
-
 static inline int
 _Py_REF_IS_MERGED(Py_ssize_t ob_ref_shared)
 {

diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h
diff --git a/Include/internal/pycore_optimizer.h b/Include/internal/pycore_optimizer.h
@@ -27,6 +27,7 @@ typedef struct {
     uint8_t valid;
     uint8_t chain_depth;  // Must be big enough for MAX_CHAIN_DEPTH - 1.
     bool warm;
+    uint8_t pending_deletion;
     int32_t index;           // Index of ENTER_EXECUTOR (if code isn't NULL, below).
     _PyBloomFilter bloom;
     _PyExecutorLinkListNode links;