Merge branch 'main' into csv-sniffer-rework

# Conflicts:
#	Lib/csv.py

Author: serhiy-storchaka

.azure-pipelines/windows-layout-steps.yml

@@ -12,7 +12,7 @@ steps:
   displayName: Show layout info (${{ parameters.kind }})
 
 - ${{ if eq(parameters.fulltest, 'true') }}:
-  - script: .\python.exe -m test -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0 --junit-xml="$(Build.BinariesDirectory)\test-results-${{ parameters.kind }}.xml" --tempdir "$(Build.BinariesDirectory)\tmp-${{ parameters.kind }}-$(arch)" -i test_launcher
+  - script: .\python.exe -m test -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0 --junit-xml="$(Build.BinariesDirectory)\test-results-${{ parameters.kind }}.xml" --tempdir "$(Build.BinariesDirectory)\tmp-${{ parameters.kind }}-$(arch)"
     workingDirectory: $(Build.BinariesDirectory)\layout-${{ parameters.kind }}-$(arch)
     displayName: ${{ parameters.kind }} Tests
     env:

.gitattributes

@@ -19,7 +19,7 @@
 *.zip binary
 
 # Specific binary files
-PC/classicAppCompat.* binary
+# -- None right now --
 
 # Text files that should not be subject to eol conversion
 [attr]noeol -text

.github/CODEOWNERS

@@ -188,12 +188,8 @@ Tools/wasm/wasi               @brettcannon @emmatyping @savannahostrowski
 PC/                           @python/windows-team
 PCbuild/                      @python/windows-team
 
-# Windows installer packages
-Tools/msi/                    @python/windows-team
-Tools/nuget/                  @python/windows-team
-
-# Windows Launcher
-PC/launcher.c                 @python/windows-team @vsajip
+# Windows Venv launcher/redirector
+PC/venvlauncher.c             @python/windows-team @vsajip
 
 
 # ----------------------------------------------------------------------------

.github/workflows/build.yml

@@ -181,22 +181,6 @@ jobs:
       free-threading: ${{ matrix.free-threading }}
       interpreter: ${{ matrix.interpreter }}
 
-  build-windows-msi:
-    # ${{ '' } is a hack to nest jobs under the same sidebar category.
-    name: Windows MSI${{ '' }}  # zizmor: ignore[obfuscation]
-    needs: build-context
-    if: fromJSON(needs.build-context.outputs.run-windows-msi)
-    strategy:
-      fail-fast: false
-      matrix:
-        arch:
-        - x86
-        - x64
-        - arm64
-    uses: ./.github/workflows/reusable-windows-msi.yml
-    with:
-      arch: ${{ matrix.arch }}
-
   build-macos:
     name: >-
       macOS
@@ -361,23 +345,14 @@ jobs:
     needs: build-context
     if: needs.build-context.outputs.run-ios == 'true'
     timeout-minutes: 60
-    runs-on: macos-14
+    runs-on: macos-26
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
 
-      # GitHub recommends explicitly selecting the desired Xcode version:
-      # https://github.com/actions/runner-images/issues/12541#issuecomment-3083850140
-      # This became a necessity as a result of
-      # https://github.com/actions/runner-images/issues/12541 and
-      # https://github.com/actions/runner-images/issues/12751.
-      - name: Select Xcode version
-        run: |
-          sudo xcode-select --switch /Applications/Xcode_15.4.app
-
       - name: Build and test
-        run: python3 Platforms/Apple ci iOS --fast-ci --simulator 'iPhone SE (3rd generation),OS=17.5'
+        run: python3 Platforms/Apple ci iOS --fast-ci
 
   build-emscripten:
     name: 'Emscripten'
@@ -659,7 +634,6 @@ jobs:
     - check-generated-files
     - check-c-api-docs
     - build-windows
-    - build-windows-msi
     - build-macos
     - build-ubuntu
     - build-ubuntu-ssltests
@@ -680,7 +654,6 @@ jobs:
         allowed-failures: >-
           build-android,
           build-emscripten,
-          build-windows-msi,
           build-ubuntu-ssltests,
           test-hypothesis,
           cifuzz,

.github/workflows/reusable-context.yml

@@ -47,9 +47,6 @@ on:  # yamllint disable-line rule:truthy
       run-wasi:
         description: Whether to run the WASI tests
         value: ${{ jobs.compute-changes.outputs.run-wasi }}  # bool
-      run-windows-msi:
-        description: Whether to run the MSI installer smoke tests
-        value: ${{ jobs.compute-changes.outputs.run-windows-msi }}  # bool
       run-windows-tests:
         description: Whether to run the Windows tests
         value: ${{ jobs.compute-changes.outputs.run-windows-tests }}  # bool
@@ -73,7 +70,6 @@ jobs:
       run-ubuntu: ${{ steps.changes.outputs.run-ubuntu }}
       run-emscripten: ${{ steps.changes.outputs.run-emscripten }}
       run-wasi: ${{ steps.changes.outputs.run-wasi }}
-      run-windows-msi: ${{ steps.changes.outputs.run-windows-msi }}
       run-windows-tests: ${{ steps.changes.outputs.run-windows-tests }}
     steps:
     - name: Set up Python

.github/workflows/reusable-emscripten.yml

@@ -77,3 +77,5 @@ jobs:
       run: python3 Platforms/emscripten pythoninfo-host
     - name: "Test"
       run: python3 Platforms/emscripten run --test
+    - name: "Test Repl"
+      run: Platforms/emscripten/browser_test/run_test.sh

.github/workflows/reusable-san.yml

@@ -39,6 +39,8 @@ jobs:
       run: |
         sudo ./.github/workflows/posix-deps-apt.sh
         # On ubuntu-26.04 image, clang is clang-21 by default
+        # NOTE: when bumping to a new version of clang,
+        # please update the versions in `Tools/pixi-packages/variants.yaml` too.
         echo "CC=clang" >> "$GITHUB_ENV"
         echo "CXX=clang++" >> "$GITHUB_ENV"
     - name: TSan option setup

.github/workflows/reusable-windows-msi.yml

@@ -50,7 +50,7 @@ gmon.out
 
 *.exe
 
-# Ignore core dumps... but not Tools/msi/core/ or the like.
+# Ignore core dumps... but not .../core/ subdirectories
 core
 !core/
 
@@ -158,7 +158,6 @@ Tools/unicode/data/
 /coverage/
 /externals/
 /htmlcov/
-Tools/msi/obj
 Tools/ssl/amd64
 Tools/ssl/win32
 Tools/freeze/test/outdir

.gitignore

@@ -499,12 +499,12 @@ Querying the error indicator
 .. c:function:: void PyErr_SetRaisedException(PyObject *exc)
 
    Set *exc* as the exception currently being raised,
-   clearing the existing exception if one is set.
+   clearing the existing exception if one is set.  If *exc* is ``NULL``,
+   just clear the existing exception.
 
-   .. warning::
+   *exc* must be a valid exception or ``NULL``.
 
-      This call ":term:`steals <steal>`" a reference to *exc*,
-      which must be a valid exception.
+   This call ":term:`steals <steal>`" a reference to *exc*.
 
    .. versionadded:: 3.12