Drop 3.9, Start testing on 3.14 and 3.14-free-threaded, get tests passing again

.github/workflows/downstream.yml

@@ -31,16 +31,6 @@ jobs:
           package_name: nbclient
           env_values: IPYKERNEL_CELL_NAME=\<IPY-INPUT\>
 
-  papermill:
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    steps:
-      - uses: actions/checkout@v4
-      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
-      - uses: jupyterlab/maintainer-tools/.github/actions/downstream-test@v1
-        with:
-          package_name: papermill
-
   nbconvert:
     runs-on: ubuntu-latest
     timeout-minutes: 15

.github/workflows/main.yml

@@ -13,6 +13,9 @@ defaults:
   run:
     shell: bash -eux {0}
 
+env:
+  HATCH_ENV: "cov"
+
 jobs:
   check_release:
     runs-on: ubuntu-latest
@@ -39,8 +42,9 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
         python-version:
-          - "3.9"
-          - "3.13"
+          - "3.10"
+          - "3.14"
+          - "3.14t"
         include:
           - os: windows-latest
             python-version: "3.12"
@@ -53,18 +57,28 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
-      - name: Run the tests
-        if: ${{ !startsWith(matrix.python-version, 'pypy') && !startsWith(matrix.os, 'windows') }}
+
+      - name: disable warnings on pypy or windows
+        if: ${{ startsWith(matrix.python-version, 'pypy') || startsWith(matrix.os, 'windows') }}
         run: |
-          hatch run cov:test --cov-fail-under 75 || hatch run test:test --lf
-      - name: Run the tests on pypy
+          echo "PYTEST_ADDOPTS=${PYTEST_ADDOPTS:-} -W default" >> $GITHUB_ENV
+
+      - name: disable coverage on pypy
         if: ${{ startsWith(matrix.python-version, 'pypy') }}
         run: |
-          hatch run test:nowarn || hatch run test:nowarn --lf
-      - name: Run the tests on windows
-        if: ${{ startsWith(matrix.os, 'windows') }}
+          echo "HATCH_ENV=test" >> $GITHUB_ENV
+
+      - name: show env
+        run: |
+          hatch -e ${HATCH_ENV} run python -VV
+          hatch -e ${HATCH_ENV} run pip freeze
+
+      - name: Run the tests
         run: |
-          hatch run cov:nowarn || hatch run test:nowarn --lf
+          hatch run ${HATCH_ENV}:test
+        env:
+          PYTHONTRACEMALLOC: "10"
+
       - uses: jupyterlab/maintainer-tools/.github/actions/upload-coverage@v1
 
   coverage:
@@ -116,9 +130,16 @@ jobs:
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
         with:
           dependency_type: minimum
+          python_version: "3.10"
+
+      - name: show env
+        run: |
+          hatch -e test run python -VV
+          hatch -e test run pip freeze
+
       - name: Run the unit tests
         run: |
-          hatch -vv run test:nowarn || hatch run test:nowarn --lf
+          hatch -vv run test:nowarn
 
   test_prereleases:
     name: Test Prereleases
@@ -131,7 +152,7 @@ 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
@@ -151,7 +172,7 @@ jobs:
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - uses: jupyterlab/maintainer-tools/.github/actions/test-sdist@v1
         with:
-          test_command: pytest -vv || pytest -vv --lf
+          test_command: pytest -vv
 
   tests_check: # This job does nothing and is only used for the branch protection
     if: always()

.pre-commit-config.yaml

@@ -4,7 +4,7 @@ ci:
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v6.0.0
     hooks:
       - id: check-case-conflict
       - id: check-ast
@@ -21,12 +21,12 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.27.4
+    rev: 0.34.0
     hooks:
       - id: check-github-workflows
 
-  - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.17
+  - repo: https://github.com/hukkin/mdformat
+    rev: 0.7.22
     hooks:
       - id: mdformat
 
@@ -37,23 +37,23 @@ repos:
         types_or: [yaml, html, json]
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: "v1.13.0"
+    rev: "v1.18.2"
     hooks:
       - id: mypy
         files: jupyter_client
         stages: [manual]
-        args: ["--install-types", "--non-interactive", "--python-version=3.9"]
+        args: ["--install-types", "--non-interactive"]
         additional_dependencies:
           ["traitlets>=5.13", "ipykernel>=6.26", "jupyter_core>=5.3.2"]
 
   - repo: https://github.com/adamchainz/blacken-docs
-    rev: "1.16.0"
+    rev: "1.20.0"
     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"]
@@ -66,16 +66,16 @@ repos:
       - id: rst-inline-touching-normal
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.2.0
+    rev: v0.14.0
     hooks:
-      - id: ruff
+      - id: ruff-check
         types_or: [python, jupyter]
         args: ["--fix", "--show-fixes"]
       - id: ruff-format
         types_or: [python, jupyter]
 
   - repo: https://github.com/scientific-python/cookie
-    rev: "2024.01.24"
+    rev: "2025.10.01"
     hooks:
       - id: sp-repo-review
         additional_dependencies: ["repo-review[cli]"]

CHANGELOG.md

@@ -516,16 +516,16 @@ No merged PRs
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#824](https://github.com/jupyter/jupyter_client/pull/824) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#821](https://github.com/jupyter/jupyter_client/pull/821) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#820](https://github.com/jupyter/jupyter_client/pull/820) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#818](https://github.com/jupyter/jupyter_client/pull/818) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#816](https://github.com/jupyter/jupyter_client/pull/816) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#815](https://github.com/jupyter/jupyter_client/pull/815) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#812](https://github.com/jupyter/jupyter_client/pull/812) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#810](https://github.com/jupyter/jupyter_client/pull/810) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#809](https://github.com/jupyter/jupyter_client/pull/809) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#807](https://github.com/jupyter/jupyter_client/pull/807) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#824](https://github.com/jupyter/jupyter_client/pull/824) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#821](https://github.com/jupyter/jupyter_client/pull/821) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#820](https://github.com/jupyter/jupyter_client/pull/820) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#818](https://github.com/jupyter/jupyter_client/pull/818) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#816](https://github.com/jupyter/jupyter_client/pull/816) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#815](https://github.com/jupyter/jupyter_client/pull/815) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#812](https://github.com/jupyter/jupyter_client/pull/812) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#810](https://github.com/jupyter/jupyter_client/pull/810) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#809](https://github.com/jupyter/jupyter_client/pull/809) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#807](https://github.com/jupyter/jupyter_client/pull/807) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -544,7 +544,7 @@ No merged PRs
 ### Maintenance and upkeep improvements
 
 - Fix sphinx 5.0 support [#804](https://github.com/jupyter/jupyter_client/pull/804) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#799](https://github.com/jupyter/jupyter_client/pull/799) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#799](https://github.com/jupyter/jupyter_client/pull/799) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -576,9 +576,9 @@ No merged PRs
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#792](https://github.com/jupyter/jupyter_client/pull/792) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#792](https://github.com/jupyter/jupyter_client/pull/792) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Use hatch backend [#789](https://github.com/jupyter/jupyter_client/pull/789) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#788](https://github.com/jupyter/jupyter_client/pull/788) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#788](https://github.com/jupyter/jupyter_client/pull/788) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Use flit build backend [#781](https://github.com/jupyter/jupyter_client/pull/781) ([@blink1073](https://github.com/blink1073))
 
 ### Contributors to this release
@@ -599,7 +599,7 @@ No merged PRs
 ### Maintenance and upkeep improvements
 
 - Allow bot PRs to be automatically labeled [#784](https://github.com/jupyter/jupyter_client/pull/784) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#783](https://github.com/jupyter/jupyter_client/pull/783) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#783](https://github.com/jupyter/jupyter_client/pull/783) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 
 ### Contributors to this release
 
@@ -617,8 +617,8 @@ No merged PRs
 
 ### Maintenance and upkeep improvements
 
-- \[pre-commit.ci\] pre-commit autoupdate [#773](https://github.com/jupyter/jupyter_client/pull/773) ([@pre-commit-ci](https://github.com/pre-commit-ci))
-- \[pre-commit.ci\] pre-commit autoupdate [#770](https://github.com/jupyter/jupyter_client/pull/770) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#773](https://github.com/jupyter/jupyter_client/pull/773) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#770](https://github.com/jupyter/jupyter_client/pull/770) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - Improve mypy config [#769](https://github.com/jupyter/jupyter_client/pull/769) ([@blink1073](https://github.com/blink1073))
 - Clean up pre-commit [#768](https://github.com/jupyter/jupyter_client/pull/768) ([@blink1073](https://github.com/blink1073))
 
@@ -635,7 +635,7 @@ No merged PRs
 ### Maintenance and upkeep improvements
 
 - Include py.typed file [#766](https://github.com/jupyter/jupyter_client/pull/766) ([@blink1073](https://github.com/blink1073))
-- \[pre-commit.ci\] pre-commit autoupdate [#765](https://github.com/jupyter/jupyter_client/pull/765) ([@pre-commit-ci](https://github.com/pre-commit-ci))
+- [pre-commit.ci] pre-commit autoupdate [#765](https://github.com/jupyter/jupyter_client/pull/765) ([@pre-commit-ci](https://github.com/pre-commit-ci))
 - More Cleanup [#764](https://github.com/jupyter/jupyter_client/pull/764) ([@blink1073](https://github.com/blink1073))
 
 ### Contributors to this release
@@ -713,7 +713,7 @@ No merged PRs
 
 ### Documentation improvements
 
-- \[DOC\] improve kernel provisioner doc [#730](https://github.com/jupyter/jupyter_client/pull/730) ([@abzymeinsjtu](https://github.com/abzymeinsjtu))
+- [DOC] improve kernel provisioner doc [#730](https://github.com/jupyter/jupyter_client/pull/730) ([@abzymeinsjtu](https://github.com/abzymeinsjtu))
 - add changelog for message spec [#525](https://github.com/jupyter/jupyter_client/pull/525) ([@minrk](https://github.com/minrk))
 
 ### Contributors to this release

jupyter_client/__init__.py

@@ -1,4 +1,5 @@
 """Client-side implementations of the Jupyter protocol"""
+
 from ._version import __version__, protocol_version, protocol_version_info, version_info
 from .asynchronous import AsyncKernelClient
 from .blocking import BlockingKernelClient

jupyter_client/_version.py

@@ -1,4 +1,5 @@
 """The version information for jupyter client."""
+
 import re
 from typing import Union
 

jupyter_client/adapter.py

@@ -1,4 +1,5 @@
 """Adapters for Jupyter msg spec versions."""
+
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 import json
@@ -194,7 +195,7 @@ def object_info_request(self, msg: dict[str, Any]) -> dict[str, Any]:
         content = msg["content"]
         code = content["code"]
         cursor_pos = content["cursor_pos"]
-        line, _ = code_to_line(code, cursor_pos)
+        _line, _ = code_to_line(code, cursor_pos)
 
         new_content = msg["content"] = {}
         new_content["oname"] = extract_oname_v4(code, cursor_pos)

jupyter_client/asynchronous/client.py

@@ -1,4 +1,5 @@
 """Implements an async kernel client"""
+
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 from __future__ import annotations
@@ -33,7 +34,7 @@ class AsyncKernelClient(KernelClient):
     raising :exc:`queue.Empty` if no message arrives within ``timeout`` seconds.
     """
 
-    context = Instance(zmq.asyncio.Context)  # type:ignore[arg-type]
+    context = Instance(zmq.asyncio.Context)  # type:ignore[assignment]
 
     def _context_default(self) -> zmq.asyncio.Context:
         self._created_context = True
@@ -51,11 +52,11 @@ def _context_default(self) -> zmq.asyncio.Context:
     wait_for_ready = KernelClient._async_wait_for_ready
 
     # The classes to use for the various channels
-    shell_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[arg-type]
-    iopub_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[arg-type]
-    stdin_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[arg-type]
-    hb_channel_class = Type(HBChannel)  # type:ignore[arg-type]
-    control_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[arg-type]
+    shell_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[assignment]
+    iopub_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[assignment]
+    stdin_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[assignment]
+    hb_channel_class = Type(HBChannel)  # type:ignore[assignment]
+    control_channel_class = Type(AsyncZMQSocketChannel)  # type:ignore[assignment]
 
     _recv_reply = KernelClient._async_recv_reply
 

jupyter_client/blocking/client.py

@@ -2,6 +2,7 @@
 
 Useful for test suites and blocking terminal interfaces.
 """
+
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 from __future__ import annotations
@@ -48,11 +49,11 @@ class BlockingKernelClient(KernelClient):
     wait_for_ready = run_sync(KernelClient._async_wait_for_ready)
 
     # The classes to use for the various channels
-    shell_channel_class = Type(ZMQSocketChannel)  # type:ignore[arg-type]
-    iopub_channel_class = Type(ZMQSocketChannel)  # type:ignore[arg-type]
-    stdin_channel_class = Type(ZMQSocketChannel)  # type:ignore[arg-type]
-    hb_channel_class = Type(HBChannel)  # type:ignore[arg-type]
-    control_channel_class = Type(ZMQSocketChannel)  # type:ignore[arg-type]
+    shell_channel_class = Type(ZMQSocketChannel)  # type:ignore[assignment]
+    iopub_channel_class = Type(ZMQSocketChannel)  # type:ignore[assignment]
+    stdin_channel_class = Type(ZMQSocketChannel)  # type:ignore[assignment]
+    hb_channel_class = Type(HBChannel)  # type:ignore[assignment]
+    control_channel_class = Type(ZMQSocketChannel)  # type:ignore[assignment]
 
     _recv_reply = run_sync(KernelClient._async_recv_reply)