diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 000000000..f10a5bc1f
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,8 @@
+version: 2
+updates:
+  # Set update schedule for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      # Check for updates to GitHub Actions every weekday
+      interval: "weekly"
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 18909f0d0..f21103be1 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -17,7 +17,7 @@ jobs:
         python-version: ["3.7", "3.10"]
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install dependencies
         run: |
           sudo apt-get update
@@ -38,7 +38,7 @@ jobs:
           cd docs
           make html SPHINXOPTS="-W"
       - name: Upload HTML
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: html
           path: build/sphinx/html
@@ -47,7 +47,7 @@ jobs:
           cd docs
           make latexpdf
       - name: Upload PDF
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: pdf
           path: docs/build/latex/nbconvert.pdf
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 2f36ab907..4ef978f49 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,100 +9,71 @@ concurrency:
   group: tests-${{ github.ref }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash -eux {0}
+
 jobs:
   run-tests:
     runs-on: ${{ matrix.os }}
+    env:
+      NBFORMAT_VALIDATOR: jsonschema
     strategy:
       matrix:
-        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
+        os: ["ubuntu-20.04", "macos-latest", "windows-latest"]
         python-version: ["3.7", "3.10"]
         include:
           - os: "windows-latest"
             python-version: "3.8"
-          - os: "ubuntu-latest"
+          - os: "ubuntu-20.04"
             python-version: "3.9"
       fail-fast: false
     steps:
-      - name: Check out repository code
-        uses: actions/checkout@v2
-      - name: Run base setup actions
-        uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
-      - uses: conda-incubator/setup-miniconda@v2
-        with:
-          mamba-version: "*"
-          channels: conda-forge
-      - name: Install conda-forge python
-        shell: bash -l {0}
-        run: |
-          mamba create -n nbconvert
-          conda activate nbconvert
-          mamba install python=${{ matrix.python-version }}
-      - name: Install conda-forge dependencies
-        shell: bash -l {0}
-        run: |
-          mamba create -n nbconvert
-          conda activate nbconvert
-          mamba install pip pyqtwebengine pandoc pyxdg
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+
       - name: Install Linux dependencies
         if: startsWith(runner.os, 'Linux')
         run: |
           sudo apt-get update
-          sudo apt-get install texlive-plain-generic inkscape texlive-xetex
-          sudo apt-get install xvfb x11-utils libxkbcommon-x11-0
-      - name: Install package dependencies
-        shell: bash -l {0}
-        run: |
-          conda activate nbconvert
-          pip install codecov
-          pip install -e ".[execute,serve,test]"
-          which python
-          python -m ipykernel.kernelspec --sys-prefix
-
-      - name: List installed packages
-        shell: bash -l {0}
-        run: |
-          conda activate nbconvert
-          pip freeze
-          pip check
+          sudo apt-get install texlive-plain-generic inkscape texlive-xetex latexmk
+          sudo apt-get install xvfb x11-utils libxkbcommon-x11-0  libxcb-xinerama0 python3-pyqt5
 
-      - name: Run tests on MacOS
-        if: ${{ startsWith(runner.os, 'macos')  }}
-        shell: bash -l {0}
-        run: |
-          conda activate nbconvert
-          # See https://github.com/pyppeteer/pyppeteer/pull/321
-          pip install -U websockets
-          python -m pytest --cov nbconvert -vv
+          # pandoc is not up to date in the ubuntu repos, so we install directly
+          wget https://github.com/jgm/pandoc/releases/download/2.14.2/pandoc-2.14.2-1-amd64.deb && sudo dpkg -i pandoc-2.14.2-1-amd64.deb
 
       - name: Run tests on Linux
         if: ${{ startsWith(runner.os, 'linux') }}
-        shell: bash -l {0}
         run: |
-          conda activate nbconvert
-          # See https://github.com/pyppeteer/pyppeteer/pull/321
-          pip install -U websockets
-          NBFORMAT_VALIDATOR=jsonschema xvfb-run --auto-servernum `which coverage` run -m pytest -vv
-
-      - name: Run tests on pypy and Windows
-        if: ${{ startsWith(runner.os, 'Windows') }}
-        shell: bash -l {0}
+          xvfb-run --auto-servernum hatch run cov:test
+
+      - name: Run tests on other platforms
+        if: ${{ !startsWith(runner.os, 'linux')  }}
         run: |
-          conda activate nbconvert
-          # See https://github.com/pyppeteer/pyppeteer/pull/321
-          pip install -U websockets
-          python -m pytest -vv
+          hatch run cov:test
 
       - name: Code coverage
-        shell: bash -l {0}
         run: |
-          conda activate nbconvert
+          pip install codecov coverage[toml]
           codecov
 
+  test_lint:
+    name: Test Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+      -  name: Run Linters
+         run: |
+          hatch run lint:style
+          pipx run 'validate-pyproject[all]' pyproject.toml
+          pipx run doc8 --max-line-length=200  --ignore-path=docs/source/other/full-config.rst
+
   check_release:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - run: pip install -e .
       - uses: jupyter-server/jupyter_releaser/.github/actions/check-release@v2
@@ -114,7 +85,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - uses: jupyterlab/maintainer-tools/.github/actions/check-links@v1
         with:
@@ -124,7 +95,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - uses: jupyterlab/maintainer-tools/.github/actions/pre-commit@v1
 
@@ -133,45 +104,37 @@ jobs:
     timeout-minutes: 20
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
         with:
-          python_version: "3.7"
-      - name: Install miniumum versions
-        uses: jupyterlab/maintainer-tools/.github/actions/install-minimums@v1
+          dependency_type: minimum
+          only_create_file: 1
       - name: Run the unit tests
         run: |
           export NBFORMAT_VALIDATOR=jsonschema
-          pytest -vv -W default || pytest -vv -W default --lf
+          hatch run test:nowarn || hatch run test:nowarn --lf
 
   test_prereleases:
     name: Test Prereleases
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Base Setup
-        uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
-      - name: Install the Python dependencies
-        run: |
-          pip install --pre -e ".[test]"
-      - name: List installed packages
-        run: |
-          pip freeze
-          pip check
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+        with:
+         dependency_type: pre
       - name: Run the tests
         run: |
           export NBFORMAT_VALIDATOR=jsonschema
-          pytest -vv -W default || pytest -vv -W default --lf
+          hatch run test:nowarn || hatch run test:nowarn --lf
 
   make_sdist:
     name: Make SDist
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - uses: jupyterlab/maintainer-tools/.github/actions/make-sdist@v1
 
@@ -183,3 +146,20 @@ jobs:
     steps:
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - uses: jupyterlab/maintainer-tools/.github/actions/test-sdist@v1
+
+  tests_check: # This job does nothing and is only used for the branch protection
+    if: always()
+    needs:
+      - run-tests
+      - pre_commit
+      - test_minimum_versions
+      - test_prereleases
+      - check_links
+      - check_release
+      - test_sdist
+    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) }}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f8ef3cfbd..3c8b7ff96 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,9 @@
+ci:
+  autoupdate_schedule: monthly
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.3.0
+    rev: v4.4.0
     hooks:
       - id: end-of-file-fixer
       - id: check-case-conflict
@@ -15,69 +18,25 @@ repos:
       - id: check-builtin-literals
       - id: trailing-whitespace
 
-  - repo: https://github.com/psf/black
-    rev: 22.10.0
+  - repo: https://github.com/python-jsonschema/check-jsonschema
+    rev: 0.19.2
     hooks:
-      - id: black
-        args: ["--line-length", "100"]
-
-  - repo: https://github.com/PyCQA/isort
-    rev: 5.10.1
-    hooks:
-      - id: isort
-        files: \.py$
-        args: [--profile=black]
-        stages: [manual]
-
-  - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.10.1
-    hooks:
-      - id: validate-pyproject
-        stages: [manual]
+      - id: check-github-workflows
 
   - repo: https://github.com/executablebooks/mdformat
     rev: 0.7.16
     hooks:
       - id: mdformat
-
-  - repo: https://github.com/asottile/pyupgrade
-    rev: v3.1.0
-    hooks:
-      - id: pyupgrade
-        args: [--py37-plus]
-
-  - repo: https://github.com/PyCQA/doc8
-    rev: v1.0.0
-    hooks:
-      - id: doc8
-        args: [--max-line-length=200]
-        stages: [manual]
-
-  - repo: https://github.com/john-hen/Flake8-pyproject
-    rev: 1.1.0.post0
-    hooks:
-      - id: Flake8-pyproject
-        alias: flake8
         additional_dependencies:
-          ["flake8-bugbear==22.6.22", "flake8-implicit-str-concat==0.2.0"]
-        stages: [manual]
+          [mdformat-gfm, mdformat-frontmatter, mdformat-footnote]
 
-  - repo: https://github.com/sirosen/check-jsonschema
-    rev: 0.18.4
+  - repo: https://github.com/psf/black
+    rev: 22.10.0
     hooks:
-      - id: check-jsonschema
-        name: "Check GitHub Workflows"
-        files: ^\.github/workflows/
-        types: [yaml]
-        args: ["--schemafile", "https://json.schemastore.org/github-workflow"]
-        stages: [manual]
+      - id: black
 
-  - repo: local
+  - repo: https://github.com/charliermarsh/ruff-pre-commit
+    rev: v0.0.181
     hooks:
-      - id: check-pyproject
-        name: check pyproject file
-        language: python
-        entry: python -m check_requirements
-        files: ^pyproject.toml$
-        stages: [manual]
-        additional_dependencies: ["tomli"]
+      - id: ruff
+        args: ["--fix"]
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 0a842d7bd..6bc1cf12c 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,14 +10,13 @@ sphinx:
 
 formats: all
 
-conda:
-  environment: docs/environment.yml
-
 build:
   image: latest
 
 python:
-  version: 3.7
+  version: 3.8
   install:
     - method: pip
       path: .
+      extra_requirements:
+        - docs
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 752b94bb7..98a018e54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,63 @@
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 7.2.6
+
+([Full Changelog](https://github.com/jupyter/nbconvert/compare/v7.2.5...788dd3c4de1b6333e807250d0f33b59b80d5b202))
+
+### Maintenance and upkeep improvements
+
+- Include all templates in sdist [#1916](https://github.com/jupyter/nbconvert/pull/1916) ([@blink1073](https://github.com/blink1073))
+- clean up workflows [#1911](https://github.com/jupyter/nbconvert/pull/1911) ([@blink1073](https://github.com/blink1073))
+- CI Cleanup [#1910](https://github.com/jupyter/nbconvert/pull/1910) ([@blink1073](https://github.com/blink1073))
+
+### Documentation improvements
+
+- Fix docs build and switch to PyData Sphinx Theme [#1912](https://github.com/jupyter/nbconvert/pull/1912) ([@blink1073](https://github.com/blink1073))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyter/nbconvert/graphs/contributors?from=2022-11-14&to=2022-12-05&type=c))
+
+[@blink1073](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3Ablink1073+updated%3A2022-11-14..2022-12-05&type=Issues)
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
+## 7.2.5
+
+([Full Changelog](https://github.com/jupyter/nbconvert/compare/v7.2.4...e5fefbb17b0bf3d6b5bbeb9a2ee62412d75ab0d8))
+
+### Bugs fixed
+
+- Fix for webpdf print margins [#1907](https://github.com/jupyter/nbconvert/pull/1907) ([@JWock82](https://github.com/JWock82))
+
+### Maintenance and upkeep improvements
+
+- Bump actions/upload-artifact from 2 to 3 [#1904](https://github.com/jupyter/nbconvert/pull/1904) ([@dependabot](https://github.com/dependabot))
+- Bump actions/checkout from 2 to 3 [#1903](https://github.com/jupyter/nbconvert/pull/1903) ([@dependabot](https://github.com/dependabot))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyter/nbconvert/graphs/contributors?from=2022-11-09&to=2022-11-14&type=c))
+
+[@dependabot](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3Adependabot+updated%3A2022-11-09..2022-11-14&type=Issues) | [@JWock82](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3AJWock82+updated%3A2022-11-09..2022-11-14&type=Issues)
+
+## 7.2.4
+
+([Full Changelog](https://github.com/jupyter/nbconvert/compare/v7.2.3...90ca66ccf02abc59052f4f38dcc657b0d2c34a07))
+
+### Maintenance and upkeep improvements
+
+- Handle jupyter core warning [#1905](https://github.com/jupyter/nbconvert/pull/1905) ([@blink1073](https://github.com/blink1073))
+- Add dependabot [#1902](https://github.com/jupyter/nbconvert/pull/1902) ([@blink1073](https://github.com/blink1073))
+- Add Py-typed marker. [#1898](https://github.com/jupyter/nbconvert/pull/1898) ([@Carreau](https://github.com/Carreau))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyter/nbconvert/graphs/contributors?from=2022-10-27&to=2022-11-09&type=c))
+
+[@blink1073](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3Ablink1073+updated%3A2022-10-27..2022-11-09&type=Issues) | [@Carreau](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3ACarreau+updated%3A2022-10-27..2022-11-09&type=Issues) | [@pre-commit-ci](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3Apre-commit-ci+updated%3A2022-10-27..2022-11-09&type=Issues)
+
 ## 7.2.3
 
 ([Full Changelog](https://github.com/jupyter/nbconvert/compare/v7.2.2...04180fdb015c56ac320d5062a81da065791c5726))
@@ -18,8 +75,6 @@
 
 [@akx](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3Aakx+updated%3A2022-10-19..2022-10-27&type=Issues) | [@pre-commit-ci](https://github.com/search?q=repo%3Ajupyter%2Fnbconvert+involves%3Apre-commit-ci+updated%3A2022-10-19..2022-10-27&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 7.2.2
 
 ([Full Changelog](https://github.com/jupyter/nbconvert/compare/v7.2.1...a9566befb6e457b51373b61debffc78050d41273))
diff --git a/README.md b/README.md
index 31d4466b2..6cf613a0b 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,8 @@
 
 ### Jupyter Notebook Conversion
 
-[![Google Group](https://img.shields.io/badge/-Google%20Group-lightgrey.svg)](https://groups.google.com/forum/#!forum/jupyter)
 [![Build Status](https://travis-ci.org/jupyter/nbconvert.svg?branch=main)](https://travis-ci.org/jupyter/nbconvert)
 [![Documentation Status](https://readthedocs.org/projects/nbconvert/badge/?version=latest)](https://nbconvert.readthedocs.io/en/latest/?badge=latest)
-[![Documentation Status](https://readthedocs.org/projects/nbconvert/badge/?version=stable)](https://nbconvert.readthedocs.io/en/stable/?badge=stable)
 [![codecov.io](https://codecov.io/github/jupyter/nbconvert/coverage.svg?branch=main)](https://codecov.io/github/jupyter/nbconvert?branch=main)
 
 The **nbconvert** tool, `jupyter nbconvert`, converts notebooks to various other
diff --git a/check_requirements.py b/check_requirements.py
index a3c53fc74..ae10f441f 100644
--- a/check_requirements.py
+++ b/check_requirements.py
@@ -21,11 +21,11 @@
 
 if errors:
     print('Missing deps in "all" reqs:')
-    print([e for e in errors])
+    print(list(errors))
 
 if remaining_all:
     print('Reqs in "all" but nowhere else:')
-    print([r for r in remaining_all])
+    print(list(remaining_all))
 
 if errors or remaining_all:
     sys.exit(1)
diff --git a/codecov.yml b/codecov.yml
index 2962fbce9..b75c3e2db 100644
--- a/codecov.yml
+++ b/codecov.yml
@@ -3,8 +3,7 @@ coverage:
     project:
       default:
         target: auto
-        threshold: 10
+        threshold: 1
     patch:
       default:
         target: 0%
-comments: off
diff --git a/docs/environment.yml b/docs/environment.yml
deleted file mode 100644
index 447a88ecf..000000000
--- a/docs/environment.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-name: nbconvert_docs
-channels:
-  - conda-forge
-dependencies:
-  - python==3.9
-  - pandoc
-  - nbformat
-  - jupyter_client
-  - ipython
-  - sphinx>=1.5.1
-  - sphinx_rtd_theme
-  - tornado
-  - entrypoints
-  - ipykernel
-  - pip
-  - pip:
-      - nbsphinx>=0.7.1
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 2cd92cc26..9eb629219 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -24,7 +24,7 @@
 
 # Automatically generate config_options.rst
 with open(os.path.join(HERE, "..", "autogen_config.py")) as f:
-    exec(compile(f.read(), "autogen_config.py", "exec"), {})
+    exec(compile(f.read(), "autogen_config.py", "exec"), {})  # noqa
     print("Created docs for config options")
 
 # -- General configuration ------------------------------------------------
@@ -82,7 +82,7 @@
 # Get information from _version.py and use it to generate version and release
 _version_py = os.path.join(HERE, "../../nbconvert/_version.py")
 version_ns = {}
-exec(compile(open(_version_py).read(), _version_py, "exec"), version_ns)
+exec(compile(open(_version_py).read(), _version_py, "exec"), version_ns)  # noqa
 # The short X.Y version.
 version = "%i.%i" % version_ns["version_info"][:2]
 # The full version, including alpha/beta/rc tags.
@@ -135,15 +135,7 @@
 
 # -- Options for HTML output ----------------------------------------------
 
-# Set on_rtd to whether we are building on readthedocs.org. We get this line of
-# code grabbed from docs.readthedocs.org
-on_rtd = os.environ.get("READTHEDOCS", None) == "True"
-
-if not on_rtd:  # only import and set the theme if we're building docs locally
-    import sphinx_rtd_theme
-
-    html_theme = "sphinx_rtd_theme"
-    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+html_theme = "pydata_sphinx_theme"
 
 # otherwise, readthedocs.org uses their default theme, so no need to specify it
 
diff --git a/docs/source/install.rst b/docs/source/install.rst
index 0fa6b9a08..8cdc10f3a 100644
--- a/docs/source/install.rst
+++ b/docs/source/install.rst
@@ -69,7 +69,7 @@ packages are specific to different operating systems:
         sudo apt-get install texlive-xetex texlive-fonts-recommended texlive-plain-generic
 
 * macOS (OS X): `MacTeX <http://tug.org/mactex/>`_.
-* Windows: `MikTex <https://miktex.org/>`_
+* Windows: `Latex Project <https://www.latex-project.org/get/>`_.
 
 Because nbconvert depends on packages and fonts included in standard
 TeX distributions, if you do not have a complete installation, you
diff --git a/docs/source/nbconvert_library.ipynb b/docs/source/nbconvert_library.ipynb
index cd69c50d1..cb3f8e37b 100644
--- a/docs/source/nbconvert_library.ipynb
+++ b/docs/source/nbconvert_library.ipynb
@@ -71,6 +71,7 @@
    "outputs": [],
    "source": [
     "import nbformat\n",
+    "\n",
     "jake_notebook = nbformat.reads(response, as_version=4)\n",
     "jake_notebook.cells[0]"
    ]
@@ -101,7 +102,7 @@
     "\n",
     "# 2. Instantiate the exporter. We use the `classic` template for now; we'll get into more details\n",
     "# later about how to customize the exporter further.\n",
-    "html_exporter = HTMLExporter(template_name = 'classic')\n",
+    "html_exporter = HTMLExporter(template_name='classic')\n",
     "\n",
     "# 3. Process the notebook we loaded earlier\n",
     "(body, resources) = html_exporter.from_notebook_node(jake_notebook)"
@@ -185,6 +186,7 @@
    "source": [
     "# Import the RST exproter\n",
     "from nbconvert import RSTExporter\n",
+    "\n",
     "# Instantiate it\n",
     "rst_exporter = RSTExporter()\n",
     "# Convert the notebook to RST format\n",
@@ -237,6 +239,7 @@
    "outputs": [],
    "source": [
     "from IPython.display import Image\n",
+    "\n",
     "Image(data=resources['outputs']['output_3_0.png'], format='png')"
    ]
   },
@@ -297,6 +300,7 @@
    "source": [
     "# create a configuration object that changes the preprocessors\n",
     "from traitlets.config import Config\n",
+    "\n",
     "c = Config()\n",
     "c.HTMLExporter.preprocessors = ['nbconvert.preprocessors.ExtractOutputPreprocessor']\n",
     "\n",
@@ -322,7 +326,7 @@
    },
    "outputs": [],
    "source": [
-    "(_, resources)          = html_exporter.from_notebook_node(jake_notebook)\n",
+    "(_, resources) = html_exporter.from_notebook_node(jake_notebook)\n",
     "(_, resources_with_fig) = html_exporter_with_figs.from_notebook_node(jake_notebook)\n",
     "\n",
     "print(\"resources without figures:\")\n",
@@ -380,17 +384,18 @@
     "from traitlets import Integer\n",
     "from nbconvert.preprocessors import Preprocessor\n",
     "\n",
+    "\n",
     "class PelicanSubCell(Preprocessor):\n",
     "    \"\"\"A Pelican specific preprocessor to remove some of the cells of a notebook\"\"\"\n",
-    "    \n",
+    "\n",
     "    # I could also read the cells from nb.metadata.pelican if someone wrote a JS extension,\n",
-    "    # but for now I'll stay with configurable value. \n",
-    "    start = Integer(0,  help=\"first cell of notebook to be converted\").tag(config=True)\n",
-    "    end   = Integer(-1, help=\"last cell of notebook to be converted\").tag(config=True)\n",
-    "    \n",
+    "    # but for now I'll stay with configurable value.\n",
+    "    start = Integer(0, help=\"first cell of notebook to be converted\").tag(config=True)\n",
+    "    end = Integer(-1, help=\"last cell of notebook to be converted\").tag(config=True)\n",
+    "\n",
     "    def preprocess(self, nb, resources):\n",
     "        self.log.info(\"I'll keep only cells from %d to %d\", self.start, self.end)\n",
-    "        nb.cells = nb.cells[self.start:self.end]                    \n",
+    "        nb.cells = nb.cells[self.start : self.end]\n",
     "        return nb, resources"
    ]
   },
@@ -412,7 +417,7 @@
    "outputs": [],
    "source": [
     "# Create a new config object that configures both the new preprocessor, as well as the exporter\n",
-    "c =  Config()\n",
+    "c = Config()\n",
     "c.PelicanSubCell.start = 4\n",
     "c.PelicanSubCell.end = 6\n",
     "c.RSTExporter.preprocessors = [PelicanSubCell]\n",
@@ -443,14 +448,17 @@
    "source": [
     "from jinja2 import DictLoader\n",
     "\n",
-    "dl = DictLoader({'footer': \n",
-    "\"\"\"\n",
+    "dl = DictLoader(\n",
+    "    {\n",
+    "        'footer': \"\"\"\n",
     "{%- extends 'lab/index.html.j2' -%} \n",
     "\n",
     "{% block footer %}\n",
     "FOOOOOOOOTEEEEER\n",
     "{% endblock footer %}\n",
-    "\"\"\"})\n",
+    "\"\"\"\n",
+    "    }\n",
+    ")\n",
     "\n",
     "\n",
     "exportHTML = HTMLExporter(extra_loaders=[dl], template_file='footer')\n",
diff --git a/nbconvert/_version.py b/nbconvert/_version.py
index 722df4e5f..9e291e28c 100644
--- a/nbconvert/_version.py
+++ b/nbconvert/_version.py
@@ -2,7 +2,7 @@
 from typing import List
 
 # Version string must appear intact for versioning
-__version__ = "7.2.3"
+__version__ = "7.2.6"
 
 # Build up version_info tuple for backwards compatibility
 pattern = r"(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)"
diff --git a/nbconvert/exporters/pdf.py b/nbconvert/exporters/pdf.py
index 1c72f3e9a..3befa0e72 100644
--- a/nbconvert/exporters/pdf.py
+++ b/nbconvert/exporters/pdf.py
@@ -15,7 +15,7 @@
 from .latex import LatexExporter
 
 
-class LatexFailed(IOError):
+class LatexFailed(IOError):  # noqa
     """Exception for failed latex run
 
     Captured latex output is in error.output.
diff --git a/nbconvert/exporters/templateexporter.py b/nbconvert/exporters/templateexporter.py
index a4aeb5889..8e7b6f9d7 100644
--- a/nbconvert/exporters/templateexporter.py
+++ b/nbconvert/exporters/templateexporter.py
@@ -122,7 +122,7 @@ def get_source(self, environment, template):
             return self.loader.get_source(environment, template)
         except TemplateNotFound:
             if template.endswith(self.extension):
-                raise TemplateNotFound(template)
+                raise TemplateNotFound(template) from None
             return self.loader.get_source(environment, template + self.extension)
 
     def list_templates(self):
@@ -569,9 +569,9 @@ def _template_paths(self, prune=True, root_dirs=None):
     def get_compatibility_base_template_conf(cls, name):
         # Hard-coded base template confs to use for backwards compatibility for 5.x-only templates
         if name == "display_priority":
-            return dict(base_template="base")
+            return {"base_template": "base"}
         if name == "full":
-            return dict(base_template="classic", mimetypes={"text/html": True})
+            return {"base_template": "classic", "mimetypes": {"text/html": True}}
 
     def get_template_names(self):
         # finds a list of template names where each successive template name is the base template
diff --git a/nbconvert/exporters/tests/files/notebook2.ipynb b/nbconvert/exporters/tests/files/notebook2.ipynb
index 1ff2e7532..f459aa2fe 100644
--- a/nbconvert/exporters/tests/files/notebook2.ipynb
+++ b/nbconvert/exporters/tests/files/notebook2.ipynb
@@ -55,7 +55,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "a = np.random.uniform(size=(100,100))"
+    "a = np.random.uniform(size=(100, 100))"
    ]
   },
   {
diff --git a/nbconvert/exporters/tests/files/notebook_inject.ipynb b/nbconvert/exporters/tests/files/notebook_inject.ipynb
index 2ddb76129..f7f7173e4 100644
--- a/nbconvert/exporters/tests/files/notebook_inject.ipynb
+++ b/nbconvert/exporters/tests/files/notebook_inject.ipynb
@@ -5,257 +5,304 @@
    "execution_count": null,
    "id": "79aede83-fba6-4715-bce6-9f3926b128a2",
    "metadata": {
-     "tags": ["FOO\"><script>alert('cell_tag')</script><div \""]
+    "tags": [
+     "FOO\"><script>alert('cell_tag')</script><div \""
+    ]
    },
    "outputs": [],
    "source": []
   },
   {
-    "cell_type": "raw",
-    "id": "372c2bf1",
-    "metadata": {},
-    "source": [
-     "Payload in raw cell <script>alert('raw cell')</script>"
-    ]
+   "cell_type": "raw",
+   "id": "372c2bf1",
+   "metadata": {},
+   "source": [
+    "Payload in raw cell <script>alert('raw cell')</script>"
+   ]
   },
   {
-    "cell_type": "markdown",
-    "id": "2d42de4a",
-    "metadata": {},
-    "source": [
-      "<script>alert('markdown cell')</script>"
-    ]
+   "cell_type": "markdown",
+   "id": "2d42de4a",
+   "metadata": {},
+   "source": [
+    "<script>alert('markdown cell')</script>"
+   ]
   },
   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "b72e53fa",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-          "image/svg+xml": ["<script>alert('image/svg+xml output')</script>"]
-        },
-        "execution_count": null,
-        "metadata": {}
-      }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "b72e63fa",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-          "image/png": [""]
-        },
-        "execution_count": null,
-        "metadata": {
-          "filenames": {
-              "image/png": "\"><script>alert('png filenames')</script>"
-          }
-        }
-      }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "b72e63f3",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-          "image/jpeg": [""]
-        },
-        "execution_count": null,
-        "metadata": {
-          "filenames": {
-              "image/jpeg": "\"><script>alert('jpg filenames')</script>"
-          }
-        }
-      }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "b72e635a",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-          "image/png": ["\"><script>alert('image/png output')</script>"]
-        },
-        "execution_count": null,
-        "metadata": {}
-      }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "p72e635a",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-          "image/jpeg": ["\"><script>alert('image/jpeg output')</script>"]
-        },
-        "execution_count": null,
-        "metadata": {}
-      }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "d72e635a",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-         "image/png": ["abcd"]
-        },
-        "execution_count": null,
-        "metadata": {
-           "width": "><script>alert('output.metadata.width png injection')</script>"
-        }
-      }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "d72e095a",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-         "image/png": ["abcd"]
-        },
-        "execution_count": null,
-        "metadata": {
-           "width": ["><script>alert('output.metadata.width png injection')</script>"]
-        }
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b72e53fa",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/svg+xml": [
+       "<script>alert('image/svg+xml output')</script>"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {}
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b72e63fa",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/png": [
+       ""
+      ]
+     },
+     "execution_count": null,
+     "metadata": {
+      "filenames": {
+       "image/png": "\"><script>alert('png filenames')</script>"
       }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "ae4f574d",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-         "image/png": ["abcd"]
-        },
-        "execution_count": null,
-        "metadata": {
-           "height": "><script>alert('output.metadata.height png injection')</script>"
-        }
+     }
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b72e63f3",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/jpeg": [
+       ""
+      ]
+     },
+     "execution_count": null,
+     "metadata": {
+      "filenames": {
+       "image/jpeg": "\"><script>alert('jpg filenames')</script>"
       }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": null,
-    "id": "w72e635a",
-    "metadata": {},
-    "outputs": [
-      {
-        "output_type": "execute_result",
-        "data": {
-         "application/vnd.jupyter.widget-view+json": {"model_id": "wid1", "foo": "\"</script><script>alert('output.data.application/vnd.jupyter.widget-view+json injection')//"}
-        },
-        "execution_count": null,
-        "metadata": {}
-       }
-    ],
-    "source": [""]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": 5,
-    "id": "2616e107",
-    "metadata": {},
-    "outputs": [
-     {
-      "data": {
-       "text/html": [
-         "<script>alert('text/html output')</script>"
-       ]
-      },
-      "execution_count": 5,
-      "metadata": {},
-      "output_type": "execute_result"
      }
-    ],
-    "source": [
-     "import os; os.system('touch /tmp/pwned')"
-    ]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": 5,
-    "id": "3616e107",
-    "metadata": {},
-    "outputs": [
-     {
-      "data": {
-       "text/markdown": [
-         "<script>alert('text/markdown output')</script>"
-       ]
-      },
-      "execution_count": 5,
-      "metadata": {},
-      "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b72e635a",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/png": [
+       "\"><script>alert('image/png output')</script>"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {}
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "p72e635a",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/jpeg": [
+       "\"><script>alert('image/jpeg output')</script>"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {}
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "d72e635a",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/png": [
+       "abcd"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {
+      "width": "><script>alert('output.metadata.width png injection')</script>"
      }
-    ],
-    "source": [
-     "import os; os.system('touch /tmp/pwned')"
-    ]
-   },
-   {
-    "cell_type": "code",
-    "execution_count": 5,
-    "id": "4616e107",
-    "metadata": {},
-    "outputs": [
-     {
-      "data": {
-       "application/javascript": [
-         "alert('application/javascript output')"
-       ]
-      },
-      "execution_count": 5,
-      "metadata": {},
-      "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "d72e095a",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/png": [
+       "abcd"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {
+      "width": [
+       "><script>alert('output.metadata.width png injection')</script>"
+      ]
      }
-    ],
-    "source": [
-     "import os; os.system('touch /tmp/pwned')"
-    ]
-   }
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "ae4f574d",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "image/png": [
+       "abcd"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {
+      "height": "><script>alert('output.metadata.height png injection')</script>"
+     }
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "w72e635a",
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "execute_result",
+     "data": {
+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "wid1",
+       "foo": "\"</script><script>alert('output.data.application/vnd.jupyter.widget-view+json injection')//"
+      }
+     },
+     "execution_count": null,
+     "metadata": {}
+    }
+   ],
+   "source": [
+    ""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "2616e107",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<script>alert('text/html output')</script>"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "import os\n",
+    "\n",
+    "os.system('touch /tmp/pwned')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "3616e107",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/markdown": [
+       "<script>alert('text/markdown output')</script>"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "import os\n",
+    "\n",
+    "os.system('touch /tmp/pwned')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "4616e107",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "application/javascript": [
+       "alert('application/javascript output')"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "import os\n",
+    "\n",
+    "os.system('touch /tmp/pwned')"
+   ]
+  }
  ],
  "metadata": {
   "title": "TITLE</title><script>alert('title')</script>",
@@ -277,7 +324,12 @@
    "version": "3.10.5"
   },
   "widgets": {
-    "application/vnd.jupyter.widget-state+json": {"state": {"wid1": {}}, "foo": "pwntester</script><script>alert('widgets');//"}
+   "application/vnd.jupyter.widget-state+json": {
+    "state": {
+     "wid1": {}
+    },
+    "foo": "pwntester</script><script>alert('widgets');//"
+   }
   }
  },
  "nbformat": 4,
diff --git a/nbconvert/exporters/tests/files/pngmetadata.ipynb b/nbconvert/exporters/tests/files/pngmetadata.ipynb
index 7f2a480df..a8da9b4e8 100644
--- a/nbconvert/exporters/tests/files/pngmetadata.ipynb
+++ b/nbconvert/exporters/tests/files/pngmetadata.ipynb
@@ -213,7 +213,8 @@
     "%matplotlib inline\n",
     "%config InlineBackend.figure_formats = set(['retina'])\n",
     "import matplotlib.pyplot as plt\n",
-    "plt.plot([0,1],[1,0])"
+    "\n",
+    "plt.plot([0, 1], [1, 0])"
    ]
   }
  ],
diff --git a/nbconvert/exporters/tests/files/prompt_numbers.ipynb b/nbconvert/exporters/tests/files/prompt_numbers.ipynb
index 64fa60a48..fc6c07ea6 100644
--- a/nbconvert/exporters/tests/files/prompt_numbers.ipynb
+++ b/nbconvert/exporters/tests/files/prompt_numbers.ipynb
@@ -39,9 +39,7 @@
     "collapsed": true
    },
    "outputs": [],
-   "source": [
-    " "
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
@@ -50,9 +48,7 @@
     "collapsed": true
    },
    "outputs": [],
-   "source": [
-    " "
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
@@ -61,9 +57,7 @@
     "collapsed": true
    },
    "outputs": [],
-   "source": [
-    " "
-   ]
+   "source": []
   }
  ],
  "metadata": {
diff --git a/nbconvert/exporters/tests/files/svg.ipynb b/nbconvert/exporters/tests/files/svg.ipynb
index 891695241..602288f31 100644
--- a/nbconvert/exporters/tests/files/svg.ipynb
+++ b/nbconvert/exporters/tests/files/svg.ipynb
@@ -474,9 +474,10 @@
    ],
    "source": [
     "%matplotlib inline\n",
-    "%config InlineBackend.figure_formats = ['svg'] \n",
+    "%config InlineBackend.figure_formats = ['svg']\n",
     "import matplotlib.pyplot as plt\n",
-    "plt.plot((0,1,2,3,4,5),(0,3,4,4,3,0))"
+    "\n",
+    "plt.plot((0, 1, 2, 3, 4, 5), (0, 3, 4, 4, 3, 0))"
    ]
   }
  ],
diff --git a/nbconvert/exporters/tests/test_export.py b/nbconvert/exporters/tests/test_export.py
index 47bbca777..ffb8ff5ca 100644
--- a/nbconvert/exporters/tests/test_export.py
+++ b/nbconvert/exporters/tests/test_export.py
@@ -14,13 +14,7 @@
 
 import nbconvert.tests
 
-from ..base import (
-    ExporterDisabledError,
-    ExporterNameError,
-    export,
-    get_export_names,
-    get_exporter,
-)
+from ..base import ExporterDisabledError, ExporterNameError, export, get_export_names, get_exporter
 from ..exporter import Exporter
 from ..python import PythonExporter
 from .base import ExportersTestsBase
diff --git a/nbconvert/exporters/tests/test_webpdf.py b/nbconvert/exporters/tests/test_webpdf.py
index 994324fd6..06916e955 100644
--- a/nbconvert/exporters/tests/test_webpdf.py
+++ b/nbconvert/exporters/tests/test_webpdf.py
@@ -7,10 +7,11 @@
 
 import pytest
 
-from ..webpdf import WebPDFExporter
+from ..webpdf import PYPPETEER_INSTALLED, WebPDFExporter
 from .base import ExportersTestsBase
 
 
+@pytest.mark.skipif(not PYPPETEER_INSTALLED, reason="Pyppeteer not installed")
 class TestWebPDFExporter(ExportersTestsBase):
     """Contains test functions for webpdf.py"""
 
diff --git a/nbconvert/exporters/webpdf.py b/nbconvert/exporters/webpdf.py
index a95648575..10f6bac55 100644
--- a/nbconvert/exporters/webpdf.py
+++ b/nbconvert/exporters/webpdf.py
@@ -12,6 +12,13 @@
 
 from .html import HTMLExporter
 
+try:
+    import pyppeteer  # noqa
+
+    PYPPETEER_INSTALLED = True
+except ImportError:
+    PYPPETEER_INSTALLED = False
+
 
 class WebPDFExporter(HTMLExporter):
     """Writer designed to write to PDF files.
diff --git a/nbconvert/filters/highlight.py b/nbconvert/filters/highlight.py
index 40ed574df..f7a1e9585 100644
--- a/nbconvert/filters/highlight.py
+++ b/nbconvert/filters/highlight.py
@@ -124,7 +124,7 @@ def __call__(self, source, language=None, metadata=None, strip_verbatim=False):
             source, LatexFormatter(**self.extra_formatter_options), language, metadata
         )
         if strip_verbatim:
-            latex = latex.replace(r"\begin{Verbatim}[commandchars=\\\{\}]" + "\n", "")  # noqa
+            latex = latex.replace(r"\begin{Verbatim}[commandchars=\\\{\}]" + "\n", "")
             return latex.replace("\n\\end{Verbatim}\n", "")
         else:
             return latex
diff --git a/nbconvert/filters/markdown_mistune.py b/nbconvert/filters/markdown_mistune.py
index 0cfe0b548..a025252df 100644
--- a/nbconvert/filters/markdown_mistune.py
+++ b/nbconvert/filters/markdown_mistune.py
@@ -30,7 +30,7 @@
 from nbconvert.filters.strings import add_anchor
 
 
-class InvalidNotebook(Exception):
+class InvalidNotebook(Exception):  # noqa
     pass
 
 
diff --git a/nbconvert/filters/tests/test_markdown.py b/nbconvert/filters/tests/test_markdown.py
index 7587f5044..599cb3d5d 100644
--- a/nbconvert/filters/tests/test_markdown.py
+++ b/nbconvert/filters/tests/test_markdown.py
@@ -125,7 +125,7 @@ def test_markdown2html_math(self):
         # all the "<", ">", "&" must be escaped correctly
         cases = [
             (
-                "\\begin{equation*}\n"  # noqa
+                "\\begin{equation*}\n"
                 + (
                     "\\left( \\sum_{k=1}^n a_k b_k \\right)^2 "
                     "\\leq \\left( \\sum_{k=1}^n a_k^2 \\right) "
diff --git a/nbconvert/nbconvertapp.py b/nbconvert/nbconvertapp.py
index 26a517714..88ad29a82 100755
--- a/nbconvert/nbconvertapp.py
+++ b/nbconvert/nbconvertapp.py
@@ -16,16 +16,7 @@
 from textwrap import dedent, fill
 
 from jupyter_core.application import JupyterApp, base_aliases, base_flags
-from traitlets import (
-    Bool,
-    DottedObjectName,
-    Instance,
-    List,
-    Type,
-    Unicode,
-    default,
-    observe,
-)
+from traitlets import Bool, DottedObjectName, Instance, List, Type, Unicode, default, observe
 from traitlets.config import Configurable, catch_config_error
 from traitlets.utils.importstring import import_item
 
@@ -363,7 +354,7 @@ def _postprocessor_class_changed(self, change):
     def initialize(self, argv=None):
         """Initialize application, notebooks, writer, and postprocessor"""
         # See https://bugs.python.org/issue37373 :(
-        if sys.version_info[0] == 3 and sys.version_info[1] >= 8 and sys.platform.startswith("win"):
+        if sys.version_info > (3, 8) and sys.platform.startswith("win"):
             asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
 
         self.init_syspath()
diff --git a/nbconvert/preprocessors/sanitize.py b/nbconvert/preprocessors/sanitize.py
index 8361e69fb..efbb558f9 100644
--- a/nbconvert/preprocessors/sanitize.py
+++ b/nbconvert/preprocessors/sanitize.py
@@ -153,12 +153,12 @@ def sanitize_html_tags(self, html_str):
         """
         Sanitize a string containing raw HTML tags.
         """
-        kwargs = dict(
-            tags=self.tags,
-            attributes=self.attributes,
-            strip=self.strip,
-            strip_comments=self.strip_comments,
-        )
+        kwargs = {
+            "tags": self.tags,
+            "attributes": self.attributes,
+            "strip": self.strip,
+            "strip_comments": self.strip_comments,
+        }
 
         if _USE_BLEACH_CSS_SANITIZER:
             css_sanitizer = CSSSanitizer(allowed_css_properties=self.styles)
diff --git a/nbconvert/preprocessors/svg2pdf.py b/nbconvert/preprocessors/svg2pdf.py
index 94d7d2cab..96c5acfda 100644
--- a/nbconvert/preprocessors/svg2pdf.py
+++ b/nbconvert/preprocessors/svg2pdf.py
@@ -113,7 +113,7 @@ def _inkscape_default(self):
                 rkey = winreg.OpenKey(wr_handle, "SOFTWARE\\Classes\\inkscape.svg\\DefaultIcon")
                 inkscape = winreg.QueryValueEx(rkey, "")[0]
             except FileNotFoundError:
-                raise FileNotFoundError("Inkscape executable not found")
+                raise FileNotFoundError("Inkscape executable not found") from None
             return inkscape
         return "inkscape"
 
diff --git a/nbconvert/preprocessors/tests/test_clearmetadata.py b/nbconvert/preprocessors/tests/test_clearmetadata.py
index 4599cebb1..12269ad6e 100644
--- a/nbconvert/preprocessors/tests/test_clearmetadata.py
+++ b/nbconvert/preprocessors/tests/test_clearmetadata.py
@@ -23,9 +23,10 @@ def build_notebook(self):
             notebook.cells[0].metadata = {}
         notebook.cells[0].metadata["test_field"] = "test_value"
         notebook.cells[0].metadata["test_nested"] = {"test_keep": "keep", "test_filtered": "filter"}
-        notebook.cells[0].metadata["executeTime"] = dict(
-            [("end_time", "09:31:50"), ("start_time", "09:31:49")]
-        )
+        notebook.cells[0].metadata["executeTime"] = {
+            "end_time": "09:31:50",
+            "start_time": "09:31:49",
+        }
         return notebook
 
     def build_preprocessor(self, **kwargs):
diff --git a/nbconvert/preprocessors/tests/test_sanitize.py b/nbconvert/preprocessors/tests/test_sanitize.py
index cfbeb2a7c..022dc3471 100644
--- a/nbconvert/preprocessors/tests/test_sanitize.py
+++ b/nbconvert/preprocessors/tests/test_sanitize.py
@@ -9,7 +9,7 @@
 class TestSanitizer(PreprocessorTestsBase):
     """Contains test functions for sanitize.py"""
 
-    maxDiff = None
+    maxDiff = None  # noqa
 
     def build_preprocessor(self):
         """Make an instance of a preprocessor"""
diff --git a/nbconvert/py.typed b/nbconvert/py.typed
new file mode 100644
index 000000000..e69de29bb
diff --git a/nbconvert/tests/base.py b/nbconvert/tests/base.py
index 60db5df42..41b2187a5 100644
--- a/nbconvert/tests/base.py
+++ b/nbconvert/tests/base.py
@@ -118,7 +118,7 @@ def create_empty_notebook(self, path):
             write(nb, f, 4)
 
     def copy_files_to(self, copy_filenames, dest="."):
-        "Copy test files into the destination directory"
+        """Copy test files into the destination directory"""
         if not os.path.isdir(dest):
             os.makedirs(dest)
         files_path = self._get_files_path()
diff --git a/nbconvert/tests/files/Unexecuted_widget.ipynb b/nbconvert/tests/files/Unexecuted_widget.ipynb
index fca01a22a..96ad3d3f4 100644
--- a/nbconvert/tests/files/Unexecuted_widget.ipynb
+++ b/nbconvert/tests/files/Unexecuted_widget.ipynb
@@ -8,6 +8,7 @@
    "outputs": [],
    "source": [
     "import ipywidgets as widgets\n",
+    "\n",
     "widgets.IntSlider(\n",
     "    value=7,\n",
     "    min=0,\n",
@@ -18,7 +19,7 @@
     "    continuous_update=False,\n",
     "    orientation='horizontal',\n",
     "    readout=True,\n",
-    "    readout_format='d'\n",
+    "    readout_format='d',\n",
     ")"
    ]
   }
diff --git a/nbconvert/tests/files/Unexecuted_widget_2.ipynb b/nbconvert/tests/files/Unexecuted_widget_2.ipynb
index fca01a22a..96ad3d3f4 100644
--- a/nbconvert/tests/files/Unexecuted_widget_2.ipynb
+++ b/nbconvert/tests/files/Unexecuted_widget_2.ipynb
@@ -8,6 +8,7 @@
    "outputs": [],
    "source": [
     "import ipywidgets as widgets\n",
+    "\n",
     "widgets.IntSlider(\n",
     "    value=7,\n",
     "    min=0,\n",
@@ -18,7 +19,7 @@
     "    continuous_update=False,\n",
     "    orientation='horizontal',\n",
     "    readout=True,\n",
-    "    readout_format='d'\n",
+    "    readout_format='d',\n",
     ")"
    ]
   }
diff --git a/nbconvert/tests/files/Widget_List.ipynb b/nbconvert/tests/files/Widget_List.ipynb
index 6592cdc9e..668e60ea4 100644
--- a/nbconvert/tests/files/Widget_List.ipynb
+++ b/nbconvert/tests/files/Widget_List.ipynb
@@ -72,7 +72,7 @@
     "    continuous_update=False,\n",
     "    orientation='horizontal',\n",
     "    readout=True,\n",
-    "    readout_format='d'\n",
+    "    readout_format='d',\n",
     ")"
    ]
   },
@@ -202,10 +202,10 @@
     "widgets.FloatLogSlider(\n",
     "    value=10,\n",
     "    base=10,\n",
-    "    min=-10, # max exponent of base\n",
-    "    max=10, # min exponent of base\n",
-    "    step=0.2, # exponent step\n",
-    "    description='Log Slider'\n",
+    "    min=-10,  # max exponent of base\n",
+    "    max=10,  # min exponent of base\n",
+    "    step=0.2,  # exponent step\n",
+    "    description='Log Slider',\n",
     ")"
    ]
   },
@@ -327,8 +327,8 @@
     "    max=10,\n",
     "    step=1,\n",
     "    description='Loading:',\n",
-    "    bar_style='', # 'success', 'info', 'warning', 'danger' or ''\n",
-    "    orientation='horizontal'\n",
+    "    bar_style='',  # 'success', 'info', 'warning', 'danger' or ''\n",
+    "    orientation='horizontal',\n",
     ")"
    ]
   },
@@ -371,7 +371,7 @@
     "    step=0.1,\n",
     "    description='Loading:',\n",
     "    bar_style='info',\n",
-    "    orientation='horizontal'\n",
+    "    orientation='horizontal',\n",
     ")"
    ]
   },
@@ -405,14 +405,7 @@
     }
    ],
    "source": [
-    "widgets.BoundedIntText(\n",
-    "    value=7,\n",
-    "    min=0,\n",
-    "    max=10,\n",
-    "    step=1,\n",
-    "    description='Text:',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.BoundedIntText(value=7, min=0, max=10, step=1, description='Text:', disabled=False)"
    ]
   },
   {
@@ -447,14 +440,7 @@
     }
    ],
    "source": [
-    "widgets.BoundedFloatText(\n",
-    "    value=7.5,\n",
-    "    min=0,\n",
-    "    max=10.0,\n",
-    "    step=0.1,\n",
-    "    description='Text:',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.BoundedFloatText(value=7.5, min=0, max=10.0, step=0.1, description='Text:', disabled=False)"
    ]
   },
   {
@@ -485,11 +471,7 @@
     }
    ],
    "source": [
-    "widgets.IntText(\n",
-    "    value=7,\n",
-    "    description='Any:',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.IntText(value=7, description='Any:', disabled=False)"
    ]
   },
   {
@@ -524,11 +506,7 @@
     }
    ],
    "source": [
-    "widgets.FloatText(\n",
-    "    value=7.5,\n",
-    "    description='Any:',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.FloatText(value=7.5, description='Any:', disabled=False)"
    ]
   },
   {
@@ -581,9 +559,9 @@
     "    value=False,\n",
     "    description='Click me',\n",
     "    disabled=False,\n",
-    "    button_style='', # 'success', 'info', 'warning', 'danger' or ''\n",
+    "    button_style='',  # 'success', 'info', 'warning', 'danger' or ''\n",
     "    tooltip='Description',\n",
-    "    icon='check'\n",
+    "    icon='check',\n",
     ")"
    ]
   },
@@ -619,11 +597,7 @@
     }
    ],
    "source": [
-    "widgets.Checkbox(\n",
-    "    value=False,\n",
-    "    description='Check me',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.Checkbox(value=False, description='Check me', disabled=False)"
    ]
   },
   {
@@ -789,9 +763,9 @@
    "source": [
     "widgets.RadioButtons(\n",
     "    options=['pepperoni', 'pineapple', 'anchovies'],\n",
-    "#     value='pineapple',\n",
+    "    #     value='pineapple',\n",
     "    description='Pizza topping:',\n",
-    "    disabled=False\n",
+    "    disabled=False,\n",
     ")"
    ]
   },
@@ -832,7 +806,7 @@
     "    value='OSX',\n",
     "    # rows=10,\n",
     "    description='OS:',\n",
-    "    disabled=False\n",
+    "    disabled=False,\n",
     ")"
    ]
   },
@@ -871,7 +845,7 @@
     "    disabled=False,\n",
     "    continuous_update=False,\n",
     "    orientation='horizontal',\n",
-    "    readout=True\n",
+    "    readout=True,\n",
     ")"
    ]
   },
@@ -906,13 +880,11 @@
    ],
    "source": [
     "import datetime\n",
-    "dates = [datetime.date(2015,i,1) for i in range(1,13)]\n",
+    "\n",
+    "dates = [datetime.date(2015, i, 1) for i in range(1, 13)]\n",
     "options = [(i.strftime('%b'), i) for i in dates]\n",
     "widgets.SelectionRangeSlider(\n",
-    "    options=options,\n",
-    "    index=(0,11),\n",
-    "    description='Months (2015)',\n",
-    "    disabled=False\n",
+    "    options=options, index=(0, 11), description='Months (2015)', disabled=False\n",
     ")"
    ]
   },
@@ -952,9 +924,9 @@
     "    options=['Slow', 'Regular', 'Fast'],\n",
     "    description='Speed:',\n",
     "    disabled=False,\n",
-    "    button_style='', # 'success', 'info', 'warning', 'danger' or ''\n",
+    "    button_style='',  # 'success', 'info', 'warning', 'danger' or ''\n",
     "    tooltips=['Description of slow', 'Description of regular', 'Description of fast'],\n",
-    "#     icons=['check'] * 3\n",
+    "    #     icons=['check'] * 3\n",
     ")"
    ]
   },
@@ -990,9 +962,9 @@
     "widgets.SelectMultiple(\n",
     "    options=['Apples', 'Oranges', 'Pears'],\n",
     "    value=['Oranges'],\n",
-    "    #rows=10,\n",
+    "    # rows=10,\n",
     "    description='Fruits',\n",
-    "    disabled=False\n",
+    "    disabled=False,\n",
     ")"
    ]
   },
@@ -1047,10 +1019,7 @@
    ],
    "source": [
     "widgets.Text(\n",
-    "    value='Hello World',\n",
-    "    placeholder='Type something',\n",
-    "    description='String:',\n",
-    "    disabled=False   \n",
+    "    value='Hello World', placeholder='Type something', description='String:', disabled=False\n",
     ")"
    ]
   },
@@ -1083,10 +1052,7 @@
    ],
    "source": [
     "widgets.Textarea(\n",
-    "    value='Hello World',\n",
-    "    placeholder='Type something',\n",
-    "    description='String:',\n",
-    "    disabled=False\n",
+    "    value='Hello World', placeholder='Type something', description='String:', disabled=False\n",
     ")"
    ]
   },
@@ -1270,9 +1236,9 @@
     "widgets.Button(\n",
     "    description='Click me',\n",
     "    disabled=False,\n",
-    "    button_style='', # 'success', 'info', 'warning', 'danger' or ''\n",
+    "    button_style='',  # 'success', 'info', 'warning', 'danger' or ''\n",
     "    tooltip='Click me',\n",
-    "    icon='check'\n",
+    "    icon='check',\n",
     ")"
    ]
   },
@@ -1321,13 +1287,13 @@
    ],
    "source": [
     "play = widgets.Play(\n",
-    "#     interval=10,\n",
+    "    #     interval=10,\n",
     "    value=50,\n",
     "    min=0,\n",
     "    max=100,\n",
     "    step=1,\n",
     "    description=\"Press play\",\n",
-    "    disabled=False\n",
+    "    disabled=False,\n",
     ")\n",
     "slider = widgets.IntSlider()\n",
     "widgets.jslink((play, 'value'), (slider, 'value'))\n",
@@ -1364,10 +1330,7 @@
     }
    ],
    "source": [
-    "widgets.DatePicker(\n",
-    "    description='Pick a Date',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.DatePicker(description='Pick a Date', disabled=False)"
    ]
   },
   {
@@ -1398,12 +1361,7 @@
     }
    ],
    "source": [
-    "widgets.ColorPicker(\n",
-    "    concise=False,\n",
-    "    description='Pick a color',\n",
-    "    value='blue',\n",
-    "    disabled=False\n",
-    ")"
+    "widgets.ColorPicker(concise=False, description='Pick a color', value='blue', disabled=False)"
    ]
   },
   {
@@ -1438,7 +1396,7 @@
    "source": [
     "widgets.FileUpload(\n",
     "    accept='',  # Accepted file extension e.g. '.txt', '.pdf', 'image/*', 'image/*,.pdf'\n",
-    "    multiple=False  # True to accept multiple files upload else False\n",
+    "    multiple=False,  # True to accept multiple files upload else False\n",
     ")"
    ]
   },
diff --git a/nbconvert/tests/files/jupyter_nbconvert_config.py b/nbconvert/tests/files/jupyter_nbconvert_config.py
index 3b5b8d504..50387fe86 100644
--- a/nbconvert/tests/files/jupyter_nbconvert_config.py
+++ b/nbconvert/tests/files/jupyter_nbconvert_config.py
@@ -1,4 +1,4 @@
-c = get_config()
+c = get_config()  # noqa
 
 # Export all the notebooks in the current directory to the sphinx_howto format.
 c.NbConvertApp.notebooks = ["notebook1.ipynb"]
diff --git a/nbconvert/tests/files/markdown_display_priority.ipynb b/nbconvert/tests/files/markdown_display_priority.ipynb
index 93308afdf..1748bc697 100644
--- a/nbconvert/tests/files/markdown_display_priority.ipynb
+++ b/nbconvert/tests/files/markdown_display_priority.ipynb
@@ -30,10 +30,12 @@
    ],
    "source": [
     "from IPython.display import set_matplotlib_formats\n",
+    "\n",
     "# generate pdf and png images\n",
     "set_matplotlib_formats('pdf', 'png')\n",
     "\n",
     "import matplotlib.pyplot as plt\n",
+    "\n",
     "%matplotlib inline\n",
     "\n",
     "\n",
diff --git a/nbconvert/tests/files/notebook2.ipynb b/nbconvert/tests/files/notebook2.ipynb
index 237ec0aab..cc0f7ec9a 100644
--- a/nbconvert/tests/files/notebook2.ipynb
+++ b/nbconvert/tests/files/notebook2.ipynb
@@ -33,6 +33,7 @@
     "%matplotlib inline\n",
     "import matplotlib\n",
     "import matplotlib.pyplot as plt\n",
+    "\n",
     "print(matplotlib.backends.backend)"
    ]
   },
@@ -45,8 +46,9 @@
    "outputs": [],
    "source": [
     "from IPython.display import set_matplotlib_formats\n",
+    "\n",
     "set_matplotlib_formats('png', 'pdf')\n",
-    "matplotlib.rcParams['figure.figsize'] = (2,1)"
+    "matplotlib.rcParams['figure.figsize'] = (2, 1)"
    ]
   },
   {
@@ -97,7 +99,7 @@
    },
    "outputs": [],
    "source": [
-    "a = np.random.uniform(size=(100,100))"
+    "a = np.random.uniform(size=(100, 100))"
    ]
   },
   {
diff --git a/nbconvert/tests/files/notebook4_jpeg.ipynb b/nbconvert/tests/files/notebook4_jpeg.ipynb
index 8df1f9f47..e929e3799 100644
--- a/nbconvert/tests/files/notebook4_jpeg.ipynb
+++ b/nbconvert/tests/files/notebook4_jpeg.ipynb
@@ -28,6 +28,7 @@
    ],
    "source": [
     "from IPython.display import Image\n",
+    "\n",
     "Image('containerized_deployments.jpeg', embed=True)"
    ]
   },
diff --git a/nbconvert/tests/files/override.py b/nbconvert/tests/files/override.py
index c8fd1ffaf..c4430e106 100644
--- a/nbconvert/tests/files/override.py
+++ b/nbconvert/tests/files/override.py
@@ -1,4 +1,4 @@
-c = get_config()
+c = get_config()  # noqa
 
 # Export all the notebooks in the current directory to the sphinx_howto format.
 c.NbConvertApp.notebooks = ["notebook2.ipynb"]
diff --git a/nbconvert/tests/test_nbconvertapp.py b/nbconvert/tests/test_nbconvertapp.py
index 45b0cddba..b6ed3c0e0 100644
--- a/nbconvert/tests/test_nbconvertapp.py
+++ b/nbconvert/tests/test_nbconvertapp.py
@@ -11,6 +11,7 @@
 from traitlets.tests.utils import check_help_all_output
 
 from nbconvert.exporters import HTMLExporter
+from nbconvert.exporters.webpdf import PYPPETEER_INSTALLED
 
 from ..postprocessors import PostProcessorBase
 from ..tests.utils import onlyif_cmds_exist
@@ -148,6 +149,7 @@ def test_filename_spaces(self):
             assert os.path.isfile("notebook with spaces.pdf")
 
     @pytest.mark.network
+    @pytest.mark.skipif(not PYPPETEER_INSTALLED, reason="Pyppeeter not installed")
     def test_webpdf_with_chromium(self):
         """
         Generate PDFs if chromium allowed to be downloaded?
diff --git a/nbconvert/utils/_contextlib_chdir.py b/nbconvert/utils/_contextlib_chdir.py
index 652178098..4f3639786 100644
--- a/nbconvert/utils/_contextlib_chdir.py
+++ b/nbconvert/utils/_contextlib_chdir.py
@@ -5,7 +5,7 @@
 from contextlib import AbstractContextManager
 
 
-class chdir(AbstractContextManager):
+class chdir(AbstractContextManager):  # noqa
     """Non thread-safe context manager to change the current working directory."""
 
     def __init__(self, path):
diff --git a/nbconvert/utils/exceptions.py b/nbconvert/utils/exceptions.py
index 30e11ea4a..bf82dcc0a 100644
--- a/nbconvert/utils/exceptions.py
+++ b/nbconvert/utils/exceptions.py
@@ -12,7 +12,7 @@
 # -----------------------------------------------------------------------------
 
 
-class ConversionException(Exception):
+class ConversionException(Exception):  # noqa
     """An exception raised by the conversion process."""
 
     pass
diff --git a/nbconvert/utils/pandoc.py b/nbconvert/utils/pandoc.py
index c2b289f70..d2d0d722b 100644
--- a/nbconvert/utils/pandoc.py
+++ b/nbconvert/utils/pandoc.py
@@ -132,7 +132,7 @@ class PandocMissing(ConversionException):
 
     def __init__(self, *args, **kwargs):
         super().__init__(
-            "Pandoc wasn't found.\n"  # noqa
+            "Pandoc wasn't found.\n"
             + "Please check that pandoc is installed:\n"
             + "https://pandoc.org/installing.html"
         )
diff --git a/nbconvert/writers/debug.py b/nbconvert/writers/debug.py
index 35ca9070e..2f64adffb 100644
--- a/nbconvert/writers/debug.py
+++ b/nbconvert/writers/debug.py
@@ -39,7 +39,7 @@ def write(self, output, resources, notebook_name="notebook", **kw):
         if isinstance(resources["outputs"], dict):
             print("outputs extracted from %s" % notebook_name)
             print("-" * 80)
-            pprint(resources["outputs"], indent=2, width=70)
+            pprint(resources["outputs"], indent=2, width=70)  # noqa
         else:
             print("no outputs extracted from %s" % notebook_name)
         print("=" * 80)
diff --git a/nbconvert/writers/tests/test_files.py b/nbconvert/writers/tests/test_files.py
index 38fe5c68b..48958673b 100644
--- a/nbconvert/writers/tests/test_files.py
+++ b/nbconvert/writers/tests/test_files.py
@@ -238,7 +238,7 @@ def test_relpath_default(self):
                 f.write("d")
 
             # Create the resoruces dictionary
-            res = dict(metadata=dict(path="sub"))
+            res = {"metadata": {"path": "sub"}}
 
             # Create files writer, test output
             writer = FilesWriter()
@@ -272,7 +272,7 @@ def test_relpath_precedence(self):
                 f.write("d")
 
             # Create the resoruces dictionary
-            res = dict(metadata=dict(path="other_sub"))
+            res = {"metadata": {"path": "other_sub"}}
 
             # Create files writer, test output
             writer = FilesWriter()
diff --git a/nbconvert/writers/tests/test_stdout.py b/nbconvert/writers/tests/test_stdout.py
index 9d7f17925..f1535296b 100644
--- a/nbconvert/writers/tests/test_stdout.py
+++ b/nbconvert/writers/tests/test_stdout.py
@@ -38,9 +38,9 @@ def test_output(self):
 
         # Create stdout writer, test output
         writer = StdoutWriter()
-        writer.write("a×", {"b": "c"})
+        writer.write("ax", {"b": "c"})
         output = stream.getvalue()
-        self.fuzzy_compare(output, "a×")
+        self.fuzzy_compare(output, "ax")
 
         # Revert stdout
         sys.stdout = stdout
diff --git a/pyproject.toml b/pyproject.toml
index 9bcc43cae..d93dd375c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,42 +56,26 @@ asciidoc = "nbconvert.exporters:ASCIIDocExporter"
 script = "nbconvert.exporters:ScriptExporter"
 
 [project.optional-dependencies]
+qtpng = ["pyqtwebengine>=5.15"]
+qtpdf = ["nbconvert[qtpng]"]
+webpdf = ["pyppeteer>=1,<1.1"]
 test = [
     "pytest",
-    "pytest-cov",
     "pytest-dependency",
     "ipykernel",
     "ipywidgets>=7",
     "pre-commit",
-    "pyppeteer>=1,<1.1",
 ]
 serve = ["tornado>=6.1"]
-qtpdf = ["pyqtwebengine>=5.15"]
-qtpng = ["pyqtwebengine>=5.15"]
-webpdf = ["pyppeteer>=1,<1.1"]
 docs = [
     "myst_parser",
     "sphinx==5.0.2",
-    "sphinx_rtd_theme",
+    "pydata_sphinx_theme",
     "nbsphinx>=0.2.12",
     "ipython",
+    "ipykernel"
 ]
-all = [
-    "ipykernel",
-    "ipython",
-    "ipywidgets>=7",
-    "nbsphinx>=0.2.12",
-    "myst_parser",
-    "pre-commit",
-    "pytest",
-    "pytest-cov",
-    "pytest-dependency",
-    "pyqtwebengine>=5.15",
-    "pyppeteer>=1,<1.1",
-    "sphinx==5.0.2",
-    "sphinx_rtd_theme",
-    "tornado>=6.1",
-]
+all = ["nbconvert[qtpdf,webpdf,test,serve,docs]"]
 
 [project.scripts]
 jupyter-nbconvert = "nbconvert.nbconvertapp:main"
@@ -104,7 +88,7 @@ path = "nbconvert/_version.py"
 [tool.hatch.build.hooks.custom]
 
 [tool.hatch.build.targets.sdist]
-artifacts = ["share/templates/lab/static/*.*"]
+artifacts = ["share/templates"]
 
 [tool.hatch.build.targets.wheel]
 exclude = [
@@ -115,6 +99,44 @@ exclude = [
 [tool.hatch.build.targets.wheel.shared-data]
 "share/templates" = "share/jupyter/nbconvert/templates"
 
+[tool.hatch.envs.docs]
+features = ["docs"]
+[tool.hatch.envs.docs.scripts]
+build = "make -C docs html SPHINXOPTS='-W'"
+
+[tool.hatch.envs.test]
+features = ["test"]
+[tool.hatch.envs.test.scripts]
+test = "python -m pytest -vv {args}"
+nowarn = "test -W default {args}"
+
+[tool.hatch.envs.cov]
+features = ["all"]
+dependencies = ["coverage", "pytest-cov"]
+[tool.hatch.envs.cov.scripts]
+test = "python -m pytest -vv --cov nbconvert --cov-branch --cov-report term-missing:skip-covered {args}"
+nowarn = "test -W default {args}"
+
+[tool.hatch.envs.lint]
+dependencies = [
+  "black[jupyter]==22.10.0",
+  "mdformat>0.7",
+  "mdformat-gfm>=0.3.5",
+  "ruff==0.0.181"
+]
+detached = true
+[tool.hatch.envs.lint.scripts]
+style = [
+  "ruff {args:.}",
+  "black --check --diff {args:.}",
+  "mdformat --check {args:docs *.md}"
+]
+fmt = [
+  "black {args:.}",
+  "ruff --fix {args:.}",
+  "mdformat {args:docs *.md}"
+]
+
 [tool.pytest.ini_options]
 markers = "network: marks tests which require network connection"
 addopts = "-raXs --durations 10 --color=yes --doctest-modules --ignore=nbconvert/tests/files/override.py --ignore=nbconvert/tests/files/jupyter_nbconvert_config.py"
@@ -132,31 +154,84 @@ filterwarnings = [
     "ignore:getargs.*format is deprecated:DeprecationWarning",
     # From jupyter_client
     "ignore:unclosed <socket.socket:ResourceWarning",
-    "ignore:unclosed event loop:ResourceWarning",
     "ignore:There is no current event loop:DeprecationWarning",
+    "ignore:unclosed event loop:ResourceWarning",
+    # From jupyter_core
+    "module:Jupyter is migrating its paths to use standard platformdirs:DeprecationWarning",
 ]
 
-[tool.flake8]
-ignore = "E501, W503, E402"
-builtins = "c, get_config"
-exclude = [
-    ".cache",
-    ".github",
-    "docs",
+[tool.coverage.report]
+exclude_lines = [
+  "pragma: no cover",
+  "def __repr__",
+  "if self.debug:",
+  "if settings.DEBUG",
+  "raise AssertionError",
+  "raise NotImplementedError",
+  "if 0:",
+  "if __name__ == .__main__.:",
+  "class .*\bProtocol\\):",
+"@(abc\\.)?abstractmethod",
 ]
-enable-extensions = "G"
-extend-ignore = [
-    "G001", "G002", "G004", "G200", "G201", "G202",
-    # black adds spaces around ':'
-    "E203",
+
+[tool.black]
+line-length = 100
+skip-string-normalization = true
+target-version = ["py37"]
+extend-exclude = ".*notebook1.ipynb$"
+
+[tool.ruff]
+target-version = "py37"
+line-length = 100
+select = [
+  "A", "B", "C", "E", "F", "FBT", "I", "N", "Q", "RUF", "S", "T",
+  "UP", "W", "YTT",
+]
+ignore = [
+  # Allow non-abstract empty methods in abstract base classes
+  "B027",
+  # C417 Unnecessary `map` usage (rewrite using a generator expression)
+  "C417",
+  # Ignore McCabe complexity
+  "C901",
+  # Allow boolean positional values in function calls, like `dict.get(... True)`
+  "FBT003",
+  # Use of `assert` detected
+  "S101",
+  # Line too long
+  "E501",
+  # Relative imports are banned
+  "TID252",
+  # Boolean ... in function definition
+  "FBT001", "FBT002",
+  # Module level import not at top of file
+  "E402",
+  # A001/A002/A003 .. is shadowing a python builtin
+  "A001", "A002", "A003",
+  # Possible hardcoded password
+  "S105", "S106",
+  # Q000 Single quotes found but double quotes preferred
+  "Q000",
+  # N806 Variable `B` in function should be lowercase
+  "N806",
+  # T201 `print` found
+  "T201",
+  # N802 Function name `CreateWellKnownSid` should be lowercase
+  "N802", "N803"
 ]
-per-file-ignores = [
-    # B011: Do not call assert False since python -O removes these calls
-    # F841 local variable 'foo' is assigned to but never used
-    "nbconvert/*/tests/*: B011", "F841",
-    "nbconvert/tests/*: B011", "F841",
-    # F401 'foo' imported but unused
-    # F403 'x' used; unable to detect undefined names
-    "nbconvert/*/__init__.py: F401", "F403",
-    "nbconvert/__init__.py: F401", "F403",
+unfixable = [
+  # Don't touch print statements
+  "T201",
+  # Don't touch noqa lines
+  "RUF100",
 ]
+
+[tool.ruff.per-file-ignores]
+ # B011: Do not call assert False since python -O removes these calls
+# F841 local variable 'foo' is assigned to but never used
+"nbconvert/*/tests/*" = ["B011", "F841"]
+"nbconvert/tests/*" = ["B011", "F841"]
+# F401 'foo' imported but unused
+# F403 'x' used; unable to detect undefined names
+"nbconvert/*/__init__.py" = ["F401", "F403"]
+"nbconvert/__init__.py" = ["F401", "F403"]
diff --git a/share/templates/lab/index.html.j2 b/share/templates/lab/index.html.j2
index 71f7502bc..4a6bb8663 100644
--- a/share/templates/lab/index.html.j2
+++ b/share/templates/lab/index.html.j2
@@ -127,6 +127,10 @@ body[data-format='mobile'] .jp-OutputArea-child .jp-OutputArea-output {
   display: none;
 }
 
+@page {
+    margin: 0.5in; /* Margin for each printed piece of paper */
+}
+
 @media print {
   .jp-Cell-inputWrapper,
   .jp-Cell-outputWrapper {