Merge branch 'main' into cell_meta

Author: ianthomas23

.github/workflows/ci.yml

@@ -104,6 +104,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - name: Run Linters
         run: |
@@ -116,7 +117,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+
       - uses: jupyter-server/jupyter_releaser/.github/actions/check-release@v2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -125,7 +128,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+
       - name: Build API docs
         run: |
           hatch run docs:api
@@ -170,11 +175,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.10"
+
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
         with:
           dependency_type: minimum
-          python_version: "3.10"
+          python_version: ${{ matrix.python-version }}
 
       - name: List installed packages
         run: |
@@ -191,10 +201,12 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
+
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
         with:
           dependency_type: pre
+
       - name: Run the tests
         run: |
           hatch run test:nowarn

.github/workflows/downstream.yml

@@ -86,67 +86,3 @@ jobs:
           cd jupyter_kernel_test
           pip install -e ".[test]"
           python test_ipykernel.py
-
-  qtconsole:
-    runs-on: ubuntu-latest
-    timeout-minutes: 20
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-      - name: Setup Python
-        uses: actions/setup-python@v6
-        with:
-          python-version: "3.10"
-          architecture: "x64"
-      - name: Install System Packages
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y --no-install-recommends '^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev libxkbcommon-dev libxkbcommon-x11-dev
-      - name: Install qtconsole dependencies
-        shell: bash -l {0}
-        run: |
-          cd ${GITHUB_WORKSPACE}/..
-          git clone https://github.com/spyder-ide/qtconsole.git
-          cd qtconsole
-          ${pythonLocation}/bin/python -m pip install -e ".[test]"
-          ${pythonLocation}/bin/python -m pip install pyqt5
-      - name: Install Ipykernel changes
-        shell: bash -l {0}
-        run: ${pythonLocation}/bin/python -m pip install -e .
-      - name: Test qtconsole
-        shell: bash -l {0}
-        run: |
-          cd ${GITHUB_WORKSPACE}/../qtconsole
-          xvfb-run --auto-servernum ${pythonLocation}/bin/python -m pytest -x -vv -s --full-trace --color=yes qtconsole -k "not test_scroll"
-
-  spyder_kernels:
-    runs-on: ubuntu-latest
-    if: false
-    timeout-minutes: 20
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-      - name: Setup Python
-        uses: actions/setup-python@v6
-        with:
-          python-version: "3.10"
-          architecture: "x64"
-      - name: Install System Packages
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y --no-install-recommends libgl1 libglx-mesa0
-      - name: Install spyder-kernels dependencies
-        shell: bash -l {0}
-        run: |
-          cd ${GITHUB_WORKSPACE}/..
-          git clone https://github.com/spyder-ide/spyder-kernels.git
-          cd spyder-kernels
-          ${pythonLocation}/bin/python -m pip install -e ".[test]"
-      - name: Install IPykernel changes
-        shell: bash -l {0}
-        run: ${pythonLocation}/bin/python -m pip install -e .
-      - name: Test spyder-kernels
-        shell: bash -l {0}
-        run: |
-          cd ${GITHUB_WORKSPACE}/../spyder-kernels
-          xvfb-run --auto-servernum ${pythonLocation}/bin/python -m pytest -x -vv -s --full-trace --color=yes spyder_kernels

.github/workflows/nightly.yml

@@ -27,7 +27,7 @@ jobs:
           python -m pip install build
           python -m build
       - name: Upload wheel
-        uses: scientific-python/upload-nightly-action@b36e8c0c10dbcfd2e05bf95f17ef8c14fd708dbf # 0.6.2
+        uses: scientific-python/upload-nightly-action@5748273c71e2d8d3a61f3a11a16421c8954f9ecf # 0.6.3
         with:
           artifacts_path: dist
           anaconda_nightly_upload_token: ${{secrets.UPLOAD_TOKEN}}

.pre-commit-config.yaml

@@ -22,7 +22,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.34.1
+    rev: 0.37.0
     hooks:
       - id: check-github-workflows
 
@@ -39,7 +39,7 @@ repos:
         types_or: [yaml, html, json]
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: "v1.18.2"
+    rev: "v1.19.1"
     hooks:
       - id: mypy
         files: ipykernel
@@ -73,7 +73,7 @@ repos:
       - id: rst-inline-touching-normal
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.14.3
+    rev: v0.15.4
     hooks:
       - id: ruff-check
         types_or: [python, jupyter]
@@ -82,7 +82,7 @@ repos:
         types_or: [python, jupyter]
 
   - repo: https://github.com/scientific-python/cookie
-    rev: "2025.10.20"
+    rev: "2026.03.02"
     hooks:
       - id: sp-repo-review
         additional_dependencies: ["repo-review[cli]"]

CHANGELOG.md

@@ -2,6 +2,110 @@
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 7.2.0
+
+([Full Changelog](https://github.com/ipython/ipykernel/compare/39eaf96a...1630c4f7d5365918c4f06cf3caee3c278b52afc2))
+
+### New features added
+
+- Added kernel_protocol_version to kernelspec [#1483](https://github.com/ipython/ipykernel/pull/1483) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+- Replaced PUB socket with XPUB socket [#1482](https://github.com/ipython/ipykernel/pull/1482) ([@JohanMabille](https://github.com/JohanMabille), [@SylvainCorlay](https://github.com/SylvainCorlay), [@ccordoba12](https://github.com/ccordoba12), [@ianthomas23](https://github.com/ianthomas23), [@minrk](https://github.com/minrk))
+
+### Enhancements made
+
+- Made IOPubThread constructor backward compatible [#1492](https://github.com/ipython/ipykernel/pull/1492) ([@JohanMabille](https://github.com/JohanMabille), [@SylvainCorlay](https://github.com/SylvainCorlay), [@ianthomas23](https://github.com/ianthomas23), [@minrk](https://github.com/minrk))
+- Advertises kernel protocol 5.5 [#1488](https://github.com/ipython/ipykernel/pull/1488) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+- Upgrade to jupyter_client 8.8.0 [#1487](https://github.com/ipython/ipykernel/pull/1487) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+- Implement kernel-side callstack filtering for internal frames [#1481](https://github.com/ipython/ipykernel/pull/1481) ([@arjxn-py](https://github.com/arjxn-py), [@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+
+### Bugs fixed
+
+- add close event for wx timer app in loop_wx [#1478](https://github.com/ipython/ipykernel/pull/1478) ([@newville](https://github.com/newville), [@ianthomas23](https://github.com/ianthomas23))
+
+### Maintenance and upkeep improvements
+
+- Temporarily revert "Test changing base method to async after (#1464)" [#1493](https://github.com/ipython/ipykernel/pull/1493) ([@ianthomas23](https://github.com/ianthomas23), [@JohanMabille](https://github.com/JohanMabille))
+- Update pytest requirement from \<9,>=7.0 to >=7.0,\<10 in the actions group across 1 directory [#1489](https://github.com/ipython/ipykernel/pull/1489) ([@JohanMabille](https://github.com/JohanMabille))
+- Removed spyder downstream tests [#1486](https://github.com/ipython/ipykernel/pull/1486) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+- Bump scientific-python/upload-nightly-action from 0.6.2 to 0.6.3 in the actions group [#1484](https://github.com/ipython/ipykernel/pull/1484) ([@JohanMabille](https://github.com/JohanMabille))
+- Fix linting errors [#1480](https://github.com/ipython/ipykernel/pull/1480) ([@ianthomas23](https://github.com/ianthomas23))
+- Bump actions/checkout from 5 to 6 in the actions group [#1479](https://github.com/ipython/ipykernel/pull/1479) ([@ianthomas23](https://github.com/ianthomas23))
+- chore: update pre-commit hooks [#1472](https://github.com/ipython/ipykernel/pull/1472) ([@ianthomas23](https://github.com/ianthomas23))
+- chore: update pre-commit hooks [#1467](https://github.com/ipython/ipykernel/pull/1467) ([@JohanMabille](https://github.com/JohanMabille))
+- Test changing base method to async after #1295 [#1464](https://github.com/ipython/ipykernel/pull/1464) ([@Carreau](https://github.com/Carreau), [@ianthomas23](https://github.com/ianthomas23))
+
+### Contributors to this release
+
+The following people contributed discussions, new ideas, code and documentation contributions, and review.
+See [our definition of contributors](https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports).
+
+([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2025-10-27&to=2026-02-06&type=c))
+
+@arjxn-py ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aarjxn-py+updated%3A2025-10-27..2026-02-06&type=Issues)) | @Carreau ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ACarreau+updated%3A2025-10-27..2026-02-06&type=Issues)) | @ccordoba12 ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Accordoba12+updated%3A2025-10-27..2026-02-06&type=Issues)) | @ianthomas23 ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aianthomas23+updated%3A2025-10-27..2026-02-06&type=Issues)) | @JohanMabille ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3AJohanMabille+updated%3A2025-10-27..2026-02-06&type=Issues)) | @minrk ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aminrk+updated%3A2025-10-27..2026-02-06&type=Issues)) | @newville ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Anewville+updated%3A2025-10-27..2026-02-06&type=Issues)) | @SylvainCorlay ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ASylvainCorlay+updated%3A2025-10-27..2026-02-06&type=Issues))
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
+## 7.2.0a1
+
+([Full Changelog](https://github.com/ipython/ipykernel/compare/v7.2.0a0...220a3c6e8b24ffb3f8678925712ff3644aafb41e))
+
+### New features added
+
+- Added kernel_protocol_version to kernelspec [#1483](https://github.com/ipython/ipykernel/pull/1483) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+
+### Enhancements made
+
+- Made IOPubThread constructor backward compatible [#1492](https://github.com/ipython/ipykernel/pull/1492) ([@JohanMabille](https://github.com/JohanMabille), [@SylvainCorlay](https://github.com/SylvainCorlay), [@ianthomas23](https://github.com/ianthomas23))
+- Advertises kernel protocol 5.5 [#1488](https://github.com/ipython/ipykernel/pull/1488) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+- Upgrade to jupyter_client 8.8.0 [#1487](https://github.com/ipython/ipykernel/pull/1487) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+
+### Maintenance and upkeep improvements
+
+- Update pytest requirement from \<9,>=7.0 to >=7.0,\<10 in the actions group across 1 directory [#1489](https://github.com/ipython/ipykernel/pull/1489) ([@JohanMabille](https://github.com/JohanMabille))
+
+### Contributors to this release
+
+The following people contributed discussions, new ideas, code and documentation contributions, and review.
+See [our definition of contributors](https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports).
+
+([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2026-01-08&to=2026-01-30&type=c))
+
+@ianthomas23 ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aianthomas23+updated%3A2026-01-08..2026-01-30&type=Issues)) | @JohanMabille ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3AJohanMabille+updated%3A2026-01-08..2026-01-30&type=Issues)) | @SylvainCorlay ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ASylvainCorlay+updated%3A2026-01-08..2026-01-30&type=Issues))
+
+## 7.2.0a0
+
+([Full Changelog](https://github.com/ipython/ipykernel/compare/v7.1.0...6786ddd040c1f0e8aaeae7e261eec511e2a37fd9))
+
+### New features added
+
+- Replaced PUB socket with XPUB socket [#1482](https://github.com/ipython/ipykernel/pull/1482) ([@JohanMabille](https://github.com/JohanMabille), [@SylvainCorlay](https://github.com/SylvainCorlay))
+
+### Enhancements made
+
+- Implement kernel-side callstack filtering for internal frames [#1481](https://github.com/ipython/ipykernel/pull/1481) ([@arjxn-py](https://github.com/arjxn-py), [@JohanMabille](https://github.com/JohanMabille))
+
+### Bugs fixed
+
+- add close event for wx timer app in loop_wx [#1478](https://github.com/ipython/ipykernel/pull/1478) ([@newville](https://github.com/newville), [@ianthomas23](https://github.com/ianthomas23))
+
+### Maintenance and upkeep improvements
+
+- Removed spyder downstream tests [#1486](https://github.com/ipython/ipykernel/pull/1486) ([@JohanMabille](https://github.com/JohanMabille), [@ianthomas23](https://github.com/ianthomas23))
+- Bump scientific-python/upload-nightly-action from 0.6.2 to 0.6.3 in the actions group [#1484](https://github.com/ipython/ipykernel/pull/1484) ([@JohanMabille](https://github.com/JohanMabille))
+- Fix linting errors [#1480](https://github.com/ipython/ipykernel/pull/1480) ([@ianthomas23](https://github.com/ianthomas23))
+- Bump actions/checkout from 5 to 6 in the actions group [#1479](https://github.com/ipython/ipykernel/pull/1479) ([@ianthomas23](https://github.com/ianthomas23))
+- chore: update pre-commit hooks [#1467](https://github.com/ipython/ipykernel/pull/1467) ([@JohanMabille](https://github.com/JohanMabille))
+- Test changing base method to async after #1295 [#1464](https://github.com/ipython/ipykernel/pull/1464) ([@Carreau](https://github.com/Carreau), [@ianthomas23](https://github.com/ianthomas23))
+
+### Contributors to this release
+
+The following people contributed discussions, new ideas, code and documentation contributions, and review.
+See [our definition of contributors](https://github-activity.readthedocs.io/en/latest/#how-does-this-tool-define-contributions-in-the-reports).
+
+([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2025-10-27&to=2026-01-08&type=c))
+
+@arjxn-py ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aarjxn-py+updated%3A2025-10-27..2026-01-08&type=Issues)) | @Carreau ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ACarreau+updated%3A2025-10-27..2026-01-08&type=Issues)) | @ianthomas23 ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aianthomas23+updated%3A2025-10-27..2026-01-08&type=Issues)) | @JohanMabille ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3AJohanMabille+updated%3A2025-10-27..2026-01-08&type=Issues)) | @newville ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Anewville+updated%3A2025-10-27..2026-01-08&type=Issues)) | @SylvainCorlay ([activity](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ASylvainCorlay+updated%3A2025-10-27..2026-01-08&type=Issues))
+
 ## 7.1.0
 
 IPykernel 7.1.0 fixes an issue where display outputs such as Matplotlib plots were not included when using `%notebook` magic to save sessions as `.ipynb` files (#1435). This is enabled using the traitlet `ZMQDisplayPublisher.store_display_history` which defaults to the previous behaviour of False. This is a minor release rather than a patch release due to the addition of the new traitlet.
@@ -36,8 +140,6 @@ This release also fixes bugs that were introduced into the 7.x branch relating t
 
 [@Carreau](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ACarreau+updated%3A2025-10-14..2025-10-27&type=Issues) | [@Darshan808](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ADarshan808+updated%3A2025-10-14..2025-10-27&type=Issues) | [@dfalbel](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Adfalbel+updated%3A2025-10-14..2025-10-27&type=Issues) | [@ianthomas23](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aianthomas23+updated%3A2025-10-14..2025-10-27&type=Issues) | [@krassowski](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Akrassowski+updated%3A2025-10-14..2025-10-27&type=Issues) | [@lumberbot-app](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Alumberbot-app+updated%3A2025-10-14..2025-10-27&type=Issues) | [@minrk](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aminrk+updated%3A2025-10-14..2025-10-27&type=Issues) | [@ptosco](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aptosco+updated%3A2025-10-14..2025-10-27&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 7.0.1
 
 IPykernel 7.0.1 is a bug fix release to support CPython 3.14.

ipykernel/_version.py

@@ -5,7 +5,7 @@
 import re
 
 # Version string must appear intact for hatch versioning
-__version__ = "7.1.0"
+__version__ = "7.2.0"
 
 # Build up version_info tuple for backwards compatibility
 pattern = r"(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)"

ipykernel/eventloops.py

@@ -301,9 +301,9 @@ def _schedule_exit(delay):
     else:
         import asyncio
 
-        import nest_asyncio
+        import nest_asyncio2
 
-        nest_asyncio.apply()
+        nest_asyncio2.apply()
 
         # Tk uses milliseconds
         poll_interval = int(1000 * kernel._poll_interval)

ipykernel/inprocess/ipkernel.py

@@ -56,7 +56,7 @@ class InProcessKernel(IPythonKernel):
 
     @default("iopub_thread")
     def _default_iopub_thread(self):
-        thread = IOPubThread(self._underlying_iopub_socket)
+        thread = IOPubThread(self._underlying_iopub_socket, session=self.session)
         thread.start()
         return thread