6.x backports

.github/workflows/ci.yml

@@ -22,16 +22,13 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.9", "3.13"]
-        include:
-          - os: ubuntu-latest
-            python-version: "pypy-3.9"
-          - os: macos-latest
-            python-version: "3.10"
-          - os: ubuntu-latest
-            python-version: "3.11"
-          - os: ubuntu-latest
-            python-version: "3.12"
+        python-version:
+          - "3.9"
+          - "3.10"
+          - "3.11"
+          - "3.12"
+          - "3.13"
+          - "pypy-3.10"
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -49,19 +46,19 @@ jobs:
         timeout-minutes: 15
         if: ${{ !startsWith( matrix.python-version, 'pypy' ) && !startsWith(matrix.os, 'windows') }}
         run: |
-          hatch run cov:test --cov-fail-under 50 || hatch run test:test --lf
+          hatch run cov:test --cov-fail-under 50
 
       - name: Run the tests on pypy
         timeout-minutes: 15
         if: ${{ startsWith( matrix.python-version, 'pypy' ) }}
         run: |
-          hatch run test:nowarn || hatch run test:nowarn --lf
+          hatch run test:nowarn
 
       - name: Run the tests on Windows
         timeout-minutes: 15
-        if: ${{  startsWith(matrix.os, 'windows') }}
+        if: ${{ !startsWith( matrix.python-version, 'pypy' ) && startsWith(matrix.os, 'windows') }}
         run: |
-          hatch run cov:nowarn || hatch run test:nowarn --lf
+          hatch run cov:nowarn
 
       - name: Check Launcher
         run: |
@@ -144,7 +141,7 @@ jobs:
 
       - name: Run the tests
         timeout-minutes: 15
-        run: pytest -W default -vv || pytest --vv -W default --lf
+        run: pytest -W default -vv
 
   test_miniumum_versions:
     name: Test Minimum Versions
@@ -164,7 +161,7 @@ jobs:
 
       - name: Run the unit tests
         run: |
-          hatch -v run test:nowarn || hatch run test:nowarn --lf
+          hatch -v run test:nowarn
 
   test_prereleases:
     name: Test Prereleases
@@ -179,7 +176,7 @@ jobs:
           dependency_type: pre
       - name: Run the tests
         run: |
-          hatch run test:nowarn || hatch run test:nowarn --lf
+          hatch run test:nowarn
 
   make_sdist:
     name: Make SDist

.github/workflows/downstream.yml

@@ -147,20 +147,3 @@ jobs:
         run: |
           cd ${GITHUB_WORKSPACE}/../spyder-kernels
           xvfb-run --auto-servernum ${pythonLocation}/bin/python -m pytest -x -vv -s --full-trace --color=yes spyder_kernels
-
-  downstream_check: # This job does nothing and is only used for the branch protection
-    if: always()
-    needs:
-      - nbclient
-      - ipywidgets
-      - jupyter_client
-      - ipyparallel
-      - jupyter_kernel_test
-      - spyder_kernels
-      - qtconsole
-    runs-on: ubuntu-latest
-    steps:
-      - name: Decide whether the needed jobs succeeded or failed
-        uses: re-actors/alls-green@release/v1
-        with:
-          jobs: ${{ toJSON(needs) }}

.github/workflows/publish-changelog.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
-      - uses: actions/create-github-app-token@v1
+      - uses: actions/create-github-app-token@v2
         id: app-token
         with:
           app-id: ${{ vars.APP_ID }}

.github/workflows/publish-release.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
-      - uses: actions/create-github-app-token@v1
+      - uses: actions/create-github-app-token@v2
         id: app-token
         with:
           app-id: ${{ vars.APP_ID }}

.pre-commit-config.yaml

@@ -4,7 +4,7 @@ ci:
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v5.0.0
     hooks:
       - id: check-case-conflict
       - id: check-ast
@@ -22,12 +22,12 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.27.4
+    rev: 0.33.2
     hooks:
       - id: check-github-workflows
 
   - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.17
+    rev: 0.7.22
     hooks:
       - id: mdformat
         additional_dependencies:
@@ -55,13 +55,13 @@ repos:
           ]
 
   - repo: https://github.com/adamchainz/blacken-docs
-    rev: "1.16.0"
+    rev: "1.19.1"
     hooks:
       - id: blacken-docs
         additional_dependencies: [black==23.7.0]
 
   - repo: https://github.com/codespell-project/codespell
-    rev: "v2.2.6"
+    rev: "v2.4.1"
     hooks:
       - id: codespell
         args: ["-L", "sur,nd"]
@@ -83,7 +83,7 @@ repos:
         types_or: [python, jupyter]
 
   - repo: https://github.com/scientific-python/cookie
-    rev: "2024.01.24"
+    rev: "2025.01.22"
     hooks:
       - id: sp-repo-review
         additional_dependencies: ["repo-review[cli]"]

.readthedocs.yaml

@@ -3,7 +3,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.11"
+    python: "3.13"
 
 sphinx:
   configuration: docs/conf.py

CHANGELOG.md

@@ -12,7 +12,7 @@
 
 ### Maintenance and upkeep improvements
 
-- \[6.x\] Update Release Scripts  [#1251](https://github.com/ipython/ipykernel/pull/1251) ([@blink1073](https://github.com/blink1073))
+- [6.x] Update Release Scripts [#1251](https://github.com/ipython/ipykernel/pull/1251) ([@blink1073](https://github.com/blink1073))
 
 ### Contributors to this release
 
@@ -73,7 +73,7 @@
 
 ### Bugs fixed
 
-- Fix: ipykernel_launcher, delete absolute sys.path\[0\] [#1206](https://github.com/ipython/ipykernel/pull/1206) ([@stdll00](https://github.com/stdll00))
+- Fix: ipykernel_launcher, delete absolute sys.path[0] [#1206](https://github.com/ipython/ipykernel/pull/1206) ([@stdll00](https://github.com/stdll00))
 
 ### Maintenance and upkeep improvements
 
@@ -341,7 +341,7 @@
 
 ### Enhancements made
 
-- Support control\<>iopub messages to e.g. unblock comm_msg from command execution  [#1114](https://github.com/ipython/ipykernel/pull/1114) ([@tkrabel-db](https://github.com/tkrabel-db))
+- Support control\<>iopub messages to e.g. unblock comm_msg from command execution [#1114](https://github.com/ipython/ipykernel/pull/1114) ([@tkrabel-db](https://github.com/tkrabel-db))
 - Add outstream hook similar to display publisher [#1110](https://github.com/ipython/ipykernel/pull/1110) ([@maartenbreddels](https://github.com/maartenbreddels))
 
 ### Maintenance and upkeep improvements
@@ -751,10 +751,10 @@
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#989](https://github.com/ipython/ipykernel/pull/989) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#985](https://github.com/ipython/ipykernel/pull/985) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#989](https://github.com/ipython/ipykernel/pull/989) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#985](https://github.com/ipython/ipykernel/pull/985) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Add python logo in svg format [#984](https://github.com/ipython/ipykernel/pull/984) ([@steff456](https://github.com/steff456))
-- \[pre-commit.ci\] pre-commit autoupdate [#982](https://github.com/ipython/ipykernel/pull/982) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#982](https://github.com/ipython/ipykernel/pull/982) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -772,13 +772,13 @@
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#978](https://github.com/ipython/ipykernel/pull/978) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#977](https://github.com/ipython/ipykernel/pull/977) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#976](https://github.com/ipython/ipykernel/pull/976) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#974](https://github.com/ipython/ipykernel/pull/974) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#971](https://github.com/ipython/ipykernel/pull/971) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#968](https://github.com/ipython/ipykernel/pull/968) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#966](https://github.com/ipython/ipykernel/pull/966) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#978](https://github.com/ipython/ipykernel/pull/978) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#977](https://github.com/ipython/ipykernel/pull/977) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#976](https://github.com/ipython/ipykernel/pull/976) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#974](https://github.com/ipython/ipykernel/pull/974) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#971](https://github.com/ipython/ipykernel/pull/971) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#968](https://github.com/ipython/ipykernel/pull/968) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#966](https://github.com/ipython/ipykernel/pull/966) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -796,9 +796,9 @@
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#962](https://github.com/ipython/ipykernel/pull/962) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#961](https://github.com/ipython/ipykernel/pull/961) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#960](https://github.com/ipython/ipykernel/pull/960) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#962](https://github.com/ipython/ipykernel/pull/962) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#961](https://github.com/ipython/ipykernel/pull/961) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#960](https://github.com/ipython/ipykernel/pull/960) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -818,7 +818,7 @@
 
 - Back to top-level tornado IOLoop [#958](https://github.com/ipython/ipykernel/pull/958) ([@minrk](https://github.com/minrk))
 - Explicitly require pyzmq >= 17 [#957](https://github.com/ipython/ipykernel/pull/957) ([@minrk](https://github.com/minrk))
-- \[pre-commit.ci\] pre-commit autoupdate [#954](https://github.com/ipython/ipykernel/pull/954) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#954](https://github.com/ipython/ipykernel/pull/954) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -842,7 +842,7 @@
 ### Maintenance and upkeep improvements
 
 - Fix sphinx 5.0 support [#951](https://github.com/ipython/ipykernel/pull/951) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#950](https://github.com/ipython/ipykernel/pull/950) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#950](https://github.com/ipython/ipykernel/pull/950) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -861,18 +861,18 @@
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#945](https://github.com/ipython/ipykernel/pull/945) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#945](https://github.com/ipython/ipykernel/pull/945) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Clean up typings [#939](https://github.com/ipython/ipykernel/pull/939) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#938](https://github.com/ipython/ipykernel/pull/938) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#938](https://github.com/ipython/ipykernel/pull/938) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Clean up types [#933](https://github.com/ipython/ipykernel/pull/933) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#932](https://github.com/ipython/ipykernel/pull/932) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#932](https://github.com/ipython/ipykernel/pull/932) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Switch to hatch backend [#931](https://github.com/ipython/ipykernel/pull/931) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#928](https://github.com/ipython/ipykernel/pull/928) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#926](https://github.com/ipython/ipykernel/pull/926) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#928](https://github.com/ipython/ipykernel/pull/928) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#926](https://github.com/ipython/ipykernel/pull/926) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Allow enforce PR label workflow to add labels [#921](https://github.com/ipython/ipykernel/pull/921) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#920](https://github.com/ipython/ipykernel/pull/920) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#919](https://github.com/ipython/ipykernel/pull/919) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#917](https://github.com/ipython/ipykernel/pull/917) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#920](https://github.com/ipython/ipykernel/pull/920) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#919](https://github.com/ipython/ipykernel/pull/919) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#917](https://github.com/ipython/ipykernel/pull/917) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -897,7 +897,7 @@
 - Add basic mypy support [#913](https://github.com/ipython/ipykernel/pull/913) ([@blink1073](https://github.com/blink1073))
 - Clean up pre-commit [#911](https://github.com/ipython/ipykernel/pull/911) ([@blink1073](https://github.com/blink1073))
 - Update setup.py [#909](https://github.com/ipython/ipykernel/pull/909) ([@tlinhart](https://github.com/tlinhart))
-- \[pre-commit.ci\] pre-commit autoupdate [#906](https://github.com/ipython/ipykernel/pull/906) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#906](https://github.com/ipython/ipykernel/pull/906) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -1315,7 +1315,7 @@
 
 - Add watchfd keyword to InProcessKernel OutStream initialization [#727](https://github.com/ipython/ipykernel/pull/727) ([@rayosborn](https://github.com/rayosborn))
 - Fix typo in eventloops.py [#711](https://github.com/ipython/ipykernel/pull/711) ([@selasley](https://github.com/selasley))
-- \[bugfix\] fix in setup.py (comma before appnope) [#709](https://github.com/ipython/ipykernel/pull/709) ([@jstriebel](https://github.com/jstriebel))
+- [bugfix] fix in setup.py (comma before appnope) [#709](https://github.com/ipython/ipykernel/pull/709) ([@jstriebel](https://github.com/jstriebel))
 
 ### Maintenance and upkeep improvements
 

ipykernel/inprocess/ipkernel.py

@@ -91,8 +91,10 @@ def _abort_queues(self):
     def _input_request(self, prompt, ident, parent, password=False):
         # Flush output before making the request.
         self.raw_input_str = None
-        sys.stderr.flush()
-        sys.stdout.flush()
+        if sys.stdout is not None:
+            sys.stdout.flush()
+        if sys.stderr is not None:
+            sys.stderr.flush()
 
         # Send the input request.
         content = json_clean(dict(prompt=prompt, password=password))

ipykernel/kernelbase.py

@@ -329,8 +329,10 @@ async def process_control(self, msg):
             except Exception:
                 self.log.error("Exception in control handler:", exc_info=True)  # noqa: G201
 
-        sys.stdout.flush()
-        sys.stderr.flush()
+        if sys.stdout is not None:
+            sys.stdout.flush()
+        if sys.stderr is not None:
+            sys.stderr.flush()
         self._publish_status_and_flush("idle", "control", self.control_stream)
 
     def should_handle(self, stream, msg, idents):
@@ -404,8 +406,10 @@ async def dispatch_shell(self, msg):
                 except Exception:
                     self.log.debug("Unable to signal in post_handler_hook:", exc_info=True)
 
-        sys.stdout.flush()
-        sys.stderr.flush()
+        if sys.stdout is not None:
+            sys.stdout.flush()
+        if sys.stderr is not None:
+            sys.stderr.flush()
         self._publish_status_and_flush("idle", "shell", self.shell_stream)
 
     def pre_handler_hook(self):
@@ -748,8 +752,10 @@ async def execute_request(self, stream, ident, parent):
             reply_content = await reply_content
 
         # Flush output before sending the reply.
-        sys.stdout.flush()
-        sys.stderr.flush()
+        if sys.stdout is not None:
+            sys.stdout.flush()
+        if sys.stderr is not None:
+            sys.stderr.flush()
         # FIXME: on rare occasions, the flush doesn't seem to make it to the
         # clients... This seems to mitigate the problem, but we definitely need
         # to better understand what's going on.
@@ -1083,8 +1089,10 @@ async def apply_request(self, stream, ident, parent):  # pragma: no cover
         reply_content, result_buf = self.do_apply(content, bufs, msg_id, md)
 
         # flush i/o
-        sys.stdout.flush()
-        sys.stderr.flush()
+        if sys.stdout is not None:
+            sys.stdout.flush()
+        if sys.stderr is not None:
+            sys.stderr.flush()
 
         md = self.finish_metadata(parent, md, reply_content)
         if not self.session:
@@ -1258,8 +1266,10 @@ def raw_input(self, prompt=""):
 
     def _input_request(self, prompt, ident, parent, password=False):
         # Flush output before making the request.
-        sys.stderr.flush()
-        sys.stdout.flush()
+        if sys.stdout is not None:
+            sys.stdout.flush()
+        if sys.stderr is not None:
+            sys.stderr.flush()
 
         # flush the stdin socket, to purge stale replies
         while True:

ipykernel/trio_runner.py

@@ -29,7 +29,7 @@ def initialize(self, kernel, io_loop):
         bg_thread.start()
 
     def interrupt(self, signum, frame):
-        """Interuppt the runner."""
+        """Interrupt the runner."""
         if self._cell_cancel_scope:
             self._cell_cancel_scope.cancel()
         else: