Update precommit hooks (#5923)

15 files changed, 261 insertions, 243 deletions

diff --git a/.circleci/config.yml b/.circleci/config.yml
index d56391ba..46398533 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,6 @@
 
 version: 2.1
 jobs:
-
   documentation:
     docker:
       - image: cimg/python:3.9
@@ -29,7 +28,7 @@ jobs:
           name: Install pysal dependencies
           command: |
             sudo apt-get install libspatialindex-dev
-      
+
       - restore_cache:
           keys:
             - pip-cache-v1
@@ -102,7 +101,6 @@ jobs:
       - store_artifacts:
           path: results
 
-
 workflows:
   documentation_and_image_comparison:
     jobs:
diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index a57dee01..5326ab64 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -1,27 +1,31 @@
 ---
 name: Bug report
-about: 'Please describe the problem you have encountered'
+about: "Please describe the problem you have encountered"
 ---
 
 <!-- If you have a general question about NetworkX, please use the discussions tab to create a new discussion -->
 
 <!--- Provide a general summary of the issue in the Title above -->
 
-
 ### Current Behavior
+
 <!--- Tell us what happens instead of the expected behavior -->
 
 ### Expected Behavior
+
 <!--- Tell us what should happen -->
 
 ### Steps to Reproduce
+
 <!--- Provide a minimal example that reproduces the bug -->
 
 ### Environment
+
 <!--- Please provide details about your local environment -->
+
 Python version:
 NetworkX version:
 
-
 ### Additional context
+
 <!--- Add any other context about the problem here, screenshots, etc. -->
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
index 058d8844..d0be5a4f 100644
--- a/.github/ISSUE_TEMPLATE/config.yml
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -5,4 +5,4 @@ contact_links:
     about: Ask questions about usage of NetworkX
   - name: Discussions and Ideas
     url: https://github.com/networkx/networkx/discussions
-    about: Talk about new algorithms, feature requests, show your latest application of networks.
\ No newline at end of file
+    about: Talk about new algorithms, feature requests, show your latest application of networks.
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index b015a499..52c8d2c4 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -2,9 +2,9 @@ name: coverage
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
   report:
@@ -13,26 +13,26 @@ jobs:
       matrix:
         python-version: ["3.10"]
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
 
-    - name: Before install
-      run: |
-        sudo apt-get update
-        sudo apt-get install graphviz graphviz-dev
+      - name: Before install
+        run: |
+          sudo apt-get update
+          sudo apt-get install graphviz graphviz-dev
 
-    - name: Install packages
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install -r requirements/default.txt -r requirements/test.txt
-        pip install -r requirements/extra.txt
-        pip install .
-        pip list
+      - name: Install packages
+        run: |
+          pip install --upgrade pip wheel setuptools
+          pip install -r requirements/default.txt -r requirements/test.txt
+          pip install -r requirements/extra.txt
+          pip install .
+          pip list
 
-    - name: Test NetworkX
-      run: |
-        pytest --cov=networkx --runslow --doctest-modules --durations=20 --pyargs networkx
-        codecov
+      - name: Test NetworkX
+        run: |
+          pytest --cov=networkx --runslow --doctest-modules --durations=20 --pyargs networkx
+          codecov
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 87f9ace6..df873404 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -2,72 +2,71 @@ name: deploy
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
   documentation:
-
     # Do not attempt to deploy documentation on forks
     if: github.repository_owner == 'networkx'
 
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python
-      uses: actions/setup-python@v3
-      with:
-        python-version: '3.9'
+      - uses: actions/checkout@v3
+      - name: Set up Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: "3.9"
 
-    - name: Before install
-      run: |
-        sudo apt-get update
-        sudo apt-get install graphviz graphviz-dev
-        sudo apt-get install texlive texlive-latex-extra latexmk texlive-xetex
-        sudo apt-get install fonts-freefont-otf xindy
-        sudo apt-get install libspatialindex-dev
+      - name: Before install
+        run: |
+          sudo apt-get update
+          sudo apt-get install graphviz graphviz-dev
+          sudo apt-get install texlive texlive-latex-extra latexmk texlive-xetex
+          sudo apt-get install fonts-freefont-otf xindy
+          sudo apt-get install libspatialindex-dev
 
-    - name: Install packages
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install -r requirements/default.txt -r requirements/test.txt
-        pip install -r requirements/extra.txt
-        pip install -r requirements/example.txt
-        pip install -U -r requirements/doc.txt
-        pip install .
-        pip list
+      - name: Install packages
+        run: |
+          pip install --upgrade pip wheel setuptools
+          pip install -r requirements/default.txt -r requirements/test.txt
+          pip install -r requirements/extra.txt
+          pip install -r requirements/example.txt
+          pip install -U -r requirements/doc.txt
+          pip install .
+          pip list
 
-    # To set up a cross-repository deploy key:
-    # 1. Create a key pair:
-    #   `ssh-keygen -t ed25519 -C "nx_doc_deploy_bot@nomail"`
-    # 2. Add the public key to the networkx/documentation repo
-    #   - Settings -> Deploy keys -> Add new
-    #   - Make sure the key has write permissions
-    # 3. Add private key as a secret to networkx/networkx repo
-    #   - Settings -> Secrets -> New Repository Secret
-    #   - Make sure the name is the same as below: CI_DEPLOY_KEY
-    - name: Install SSH agent
-      if: github.ref == 'refs/heads/main'
-      uses: webfactory/ssh-agent@v0.5.4
-      with:
-        ssh-private-key: ${{ secrets.CI_DEPLOY_KEY }}
+      # To set up a cross-repository deploy key:
+      # 1. Create a key pair:
+      #   `ssh-keygen -t ed25519 -C "nx_doc_deploy_bot@nomail"`
+      # 2. Add the public key to the networkx/documentation repo
+      #   - Settings -> Deploy keys -> Add new
+      #   - Make sure the key has write permissions
+      # 3. Add private key as a secret to networkx/networkx repo
+      #   - Settings -> Secrets -> New Repository Secret
+      #   - Make sure the name is the same as below: CI_DEPLOY_KEY
+      - name: Install SSH agent
+        if: github.ref == 'refs/heads/main'
+        uses: webfactory/ssh-agent@v0.5.4
+        with:
+          ssh-private-key: ${{ secrets.CI_DEPLOY_KEY }}
 
-    - name: Build docs
-      if: github.ref == 'refs/heads/main'
-      run: |
-        export DISPLAY=:99
-        make -C doc/ html
-        make -C doc/ latexpdf LATEXOPTS="-file-line-error -halt-on-error"
-        cp -a doc/build/latex/networkx_reference.pdf doc/build/html/_downloads/.
+      - name: Build docs
+        if: github.ref == 'refs/heads/main'
+        run: |
+          export DISPLAY=:99
+          make -C doc/ html
+          make -C doc/ latexpdf LATEXOPTS="-file-line-error -halt-on-error"
+          cp -a doc/build/latex/networkx_reference.pdf doc/build/html/_downloads/.
 
-    - name: Deploy docs
-      if: github.ref == 'refs/heads/main'
-      uses: JamesIves/github-pages-deploy-action@releases/v3
-      with:
-        GIT_CONFIG_NAME: nx-doc-deploy-bot
-        GIT_CONFIG_EMAIL: nx-doc-deploy-bot@nomail
-        FOLDER: doc/build/html
-        REPOSITORY_NAME: networkx/documentation
-        BRANCH: gh-pages
-        TARGET_FOLDER: latest
-        SSH: true
+      - name: Deploy docs
+        if: github.ref == 'refs/heads/main'
+        uses: JamesIves/github-pages-deploy-action@releases/v3
+        with:
+          GIT_CONFIG_NAME: nx-doc-deploy-bot
+          GIT_CONFIG_EMAIL: nx-doc-deploy-bot@nomail
+          FOLDER: doc/build/html
+          REPOSITORY_NAME: networkx/documentation
+          BRANCH: gh-pages
+          TARGET_FOLDER: latest
+          SSH: true
diff --git a/.github/workflows/pytest-randomly.yml b/.github/workflows/pytest-randomly.yml
index 2b8b1754..84168d20 100644
--- a/.github/workflows/pytest-randomly.yml
+++ b/.github/workflows/pytest-randomly.yml
@@ -5,23 +5,22 @@ on:
     - cron: "0 0 * * *"
 
 jobs:
-
   randomize-test-order:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python
-      uses: actions/setup-python@v2
-      with:
-        python-version: "3.9"
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.9"
 
-    - name: Install packages
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install -r requirements/default.txt -r requirements/test.txt
-        pip install pytest-randomly
-        pip install .
-        pip list
+      - name: Install packages
+        run: |
+          pip install --upgrade pip wheel setuptools
+          pip install -r requirements/default.txt -r requirements/test.txt
+          pip install pytest-randomly
+          pip install .
+          pip list
 
-    - name: Run tests
-      run: pytest --doctest-modules --durations=10 --pyargs networkx
+      - name: Run tests
+        run: pytest --doctest-modules --durations=10 --pyargs networkx
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7918692d..17dab7ce 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -3,135 +3,134 @@ name: test
 on: [push, pull_request]
 
 jobs:
-
   base:
     runs-on: ${{ matrix.os }}-latest
     strategy:
       matrix:
         os: [ubuntu, macos, windows]
-        python-version: ['pypy-3.8', '3.11-dev']
+        python-version: ["pypy-3.8", "3.11-dev"]
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Install packages
-      run: |
-        python -m pip install --upgrade pip wheel setuptools
-        python -m pip install -r requirements/test.txt
-        python -m pip install .
-        python -m pip list
-
-    - name: Test NetworkX
-      run: |
-        pytest --durations=10 --pyargs networkx
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install packages
+        run: |
+          python -m pip install --upgrade pip wheel setuptools
+          python -m pip install -r requirements/test.txt
+          python -m pip install .
+          python -m pip list
+
+      - name: Test NetworkX
+        run: |
+          pytest --durations=10 --pyargs networkx
 
   default:
     runs-on: ${{ matrix.os }}-latest
     strategy:
       matrix:
         os: [ubuntu, macos, windows]
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ["3.8", "3.9", "3.10"]
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Install packages
-      run: |
-        python -m pip install --upgrade pip wheel setuptools
-        python -m pip install -r requirements/default.txt -r requirements/test.txt
-        python -m pip install .
-        python -m pip list
-
-    - name: Test NetworkX
-      run: |
-        pytest --doctest-modules --durations=10 --pyargs networkx
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install packages
+        run: |
+          python -m pip install --upgrade pip wheel setuptools
+          python -m pip install -r requirements/default.txt -r requirements/test.txt
+          python -m pip install .
+          python -m pip list
+
+      - name: Test NetworkX
+        run: |
+          pytest --doctest-modules --durations=10 --pyargs networkx
 
   extra:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-22.04, macos-latest, windows-latest]
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ["3.8", "3.9", "3.10"]
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Before install (Linux)
-      if: runner.os == 'Linux'
-      run: sudo apt-get update && sudo apt-get install graphviz graphviz-dev
-
-    - name: Before install (macOS)
-      if: runner.os == 'macOS'
-      run: brew install graphviz
-
-    - name: Before install (Windows)
-      if: runner.os == 'Windows'
-      run: choco install graphviz
-
-    - name: Install packages (Linux)
-      if: runner.os == 'Linux'
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install -r requirements/default.txt -r requirements/test.txt
-        pip install -r requirements/extra.txt
-        pip install .
-        pip list
-    - name: Install packages (macOS)
-      if: runner.os == 'macOS'
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install -r requirements/default.txt -r requirements/test.txt
-        pip install --global-option=build_ext --global-option="-I/usr/local/include/" --global-option="-L/usr/local/lib/" pygraphviz
-        pip install -r requirements/extra.txt
-        pip install .
-        pip list
-    - name: Install packages (windows)
-      if: runner.os == 'Windows'
-      run: |
-        echo "C:\Program Files\Graphviz\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-        python -m pip install --upgrade pip wheel setuptools
-        python -m pip install -r requirements/default.txt -r requirements/test.txt
-        python -m pip install --global-option=build_ext `
-                              --global-option="-IC:\Program Files\Graphviz\include" `
-                              --global-option="-LC:\Program Files\Graphviz\lib" `
-                              pygraphviz
-        python -m pip install -r requirements/extra.txt
-        python -m pip install .
-        python -m pip list
-
-    - name: Test NetworkX
-      run: |
-        pytest --doctest-modules --durations=10 --pyargs networkx
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Before install (Linux)
+        if: runner.os == 'Linux'
+        run: sudo apt-get update && sudo apt-get install graphviz graphviz-dev
+
+      - name: Before install (macOS)
+        if: runner.os == 'macOS'
+        run: brew install graphviz
+
+      - name: Before install (Windows)
+        if: runner.os == 'Windows'
+        run: choco install graphviz
+
+      - name: Install packages (Linux)
+        if: runner.os == 'Linux'
+        run: |
+          pip install --upgrade pip wheel setuptools
+          pip install -r requirements/default.txt -r requirements/test.txt
+          pip install -r requirements/extra.txt
+          pip install .
+          pip list
+      - name: Install packages (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          pip install --upgrade pip wheel setuptools
+          pip install -r requirements/default.txt -r requirements/test.txt
+          pip install --global-option=build_ext --global-option="-I/usr/local/include/" --global-option="-L/usr/local/lib/" pygraphviz
+          pip install -r requirements/extra.txt
+          pip install .
+          pip list
+      - name: Install packages (windows)
+        if: runner.os == 'Windows'
+        run: |
+          echo "C:\Program Files\Graphviz\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+          python -m pip install --upgrade pip wheel setuptools
+          python -m pip install -r requirements/default.txt -r requirements/test.txt
+          python -m pip install --global-option=build_ext `
+                                --global-option="-IC:\Program Files\Graphviz\include" `
+                                --global-option="-LC:\Program Files\Graphviz\lib" `
+                                pygraphviz
+          python -m pip install -r requirements/extra.txt
+          python -m pip install .
+          python -m pip list
+
+      - name: Test NetworkX
+        run: |
+          pytest --doctest-modules --durations=10 --pyargs networkx
 
   prerelease:
     runs-on: ${{ matrix.os }}-latest
     strategy:
       matrix:
         os: [ubuntu, macos]
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ["3.8", "3.9", "3.10"]
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Install packages
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install --pre -r requirements/default.txt -r requirements/test.txt
-        pip install .
-        pip list
-
-    - name: Test NetworkX
-      run: |
-        pytest --doctest-modules --durations=10 --pyargs networkx
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install packages
+        run: |
+          pip install --upgrade pip wheel setuptools
+          pip install --pre -r requirements/default.txt -r requirements/test.txt
+          pip install .
+          pip list
+
+      - name: Test NetworkX
+        run: |
+          pytest --doctest-modules --durations=10 --pyargs networkx
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ca7a51af..07671dd1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -2,23 +2,29 @@
 # pre-commit install
 
 repos:
--   repo: https://github.com/psf/black
+  - repo: https://github.com/psf/black
     rev: 22.6.0
     hooks:
-    - id: black
--   repo: https://github.com/asottile/pyupgrade
-    rev: v2.34.0
+      - id: black
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v2.37.3
     hooks:
-    -   id: pyupgrade
+      - id: pyupgrade
         args: [--py38-plus]
--   repo: https://github.com/asottile/blacken-docs
+  - repo: https://github.com/asottile/blacken-docs
     rev: v1.12.1
     hooks:
-    -   id: blacken-docs
--   repo: https://github.com/pycqa/isort
+      - id: blacken-docs
+  - repo: https://github.com/pycqa/isort
     rev: 5.10.1
     hooks:
-    -   id: isort
+      - id: isort
         name: isort (python)
         args: ["--profile", "black", "--filter-files", "--skip", "__init__.py"]
         files: ^networkx/
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v2.7.1
+    hooks:
+      - id: prettier
+        files: \.(html|md|yml|yaml)
+        args: [--prose-wrap=preserve]
diff --git a/doc/README.md b/doc/README.md
index 481f2674..96012b25 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -21,7 +21,7 @@ To build the HTML documentation, enter::
 
     make html
 
-in the ``doc/`` directory.  This will generate a ``build/html`` subdirectory
+in the `doc/` directory. This will generate a `build/html` subdirectory
 containing the built documentation.
 
 To build the PDF documentation, enter::
diff --git a/doc/_templates/dev_banner.html b/doc/_templates/dev_banner.html
index 5fd2b535..b90046d3 100644
--- a/doc/_templates/dev_banner.html
+++ b/doc/_templates/dev_banner.html
@@ -1,10 +1,13 @@
 {# Creates a banner at the top of the page for development versions. #}
 <div class="container-fluid version-alert devbar">
-<div class="row no-gutters">
-<div class="col-12 text-center">
-This page is documentation for a DEVELOPMENT / PRE-RELEASE version.
-<a class="btn version-stable font-weight-bold ml-3 my-3 align-baseline"
-href="https://networkx.org/documentation/stable/">Switch to stable version</a>
-</div>
-</div>
+  <div class="row no-gutters">
+    <div class="col-12 text-center">
+      This page is documentation for a DEVELOPMENT / PRE-RELEASE version.
+      <a
+        class="btn version-stable font-weight-bold ml-3 my-3 align-baseline"
+        href="https://networkx.org/documentation/stable/"
+        >Switch to stable version</a
+      >
+    </div>
+  </div>
 </div>
diff --git a/doc/_templates/eol_banner.html b/doc/_templates/eol_banner.html
index 7f607cc8..2f8a1df6 100644
--- a/doc/_templates/eol_banner.html
+++ b/doc/_templates/eol_banner.html
@@ -1,6 +1,11 @@
 {# Creates a banner at the top of the page for EOL versions. #}
 <div class="admonition note">
-<p class="admonition-title">Note</p>
-  <p>This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see <a href="https://networkx.org/documentation/stable/">the current NetworkX documentation</a>.</p>
+  <p class="admonition-title">Note</p>
+  <p>
+    This documents an unmaintained version of NetworkX. Please upgrade to a
+    maintained version and see
+    <a href="https://networkx.org/documentation/stable/"
+      >the current NetworkX documentation</a
+    >.
+  </p>
 </div>
-
diff --git a/doc/_templates/layout.html b/doc/_templates/layout.html
index 45f314b7..b4665f6c 100644
--- a/doc/_templates/layout.html
+++ b/doc/_templates/layout.html
@@ -1,6 +1,2 @@
-{% extends "!layout.html" %}
-
-{% block content %}
-  {% include "dev_banner.html" %}
-  {{ super() }}
-{% endblock %}
+{% extends "!layout.html" %} {% block content %} {% include "dev_banner.html" %}
+{{ super() }} {% endblock %}
diff --git a/doc/_templates/version.html b/doc/_templates/version.html
index 877fd146..94b91541 100644
--- a/doc/_templates/version.html
+++ b/doc/_templates/version.html
@@ -1,13 +1,22 @@
 <ul class="navbar-nav">
-    <li class="mr-2 dropdown">
-        <button type="button" class="btn btn-version btn-sm navbar-btn dropdown-toggle" id="dLabelMore" data-toggle="dropdown">
-            v{{ release }}
-            <span class="caret"></span>
-        </button>
-        <ul class="dropdown-menu" aria-labelledby="dLabelMore">
-            {%- for ver, txt in versions_dropdown.items() %}
-            <li><a href="https://networkx.org/documentation/{{ ver }}/index.html">{{ txt }}</a></li>
-            {%- endfor %}
-        </ul>
-    </li>
+  <li class="mr-2 dropdown">
+    <button
+      type="button"
+      class="btn btn-version btn-sm navbar-btn dropdown-toggle"
+      id="dLabelMore"
+      data-toggle="dropdown"
+    >
+      v{{ release }}
+      <span class="caret"></span>
+    </button>
+    <ul class="dropdown-menu" aria-labelledby="dLabelMore">
+      {%- for ver, txt in versions_dropdown.items() %}
+      <li>
+        <a href="https://networkx.org/documentation/{{ ver }}/index.html"
+          >{{ txt }}</a
+        >
+      </li>
+      {%- endfor %}
+    </ul>
+  </li>
 </ul>
diff --git a/examples/external/force/force.html b/examples/external/force/force.html
index 21cc7e33..780ed7fb 100644
--- a/examples/external/force/force.html
+++ b/examples/external/force/force.html
@@ -3,7 +3,7 @@
   <head>
     <title>Force-Directed Layout</title>
     <script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
-    <link type="text/css" rel="stylesheet" href="force/force.css"/>
+    <link type="text/css" rel="stylesheet" href="force/force.css" />
   </head>
   <body>
     <svg width="960" height="600"></svg>
diff --git a/requirements/developer.txt b/requirements/developer.txt
index 30426ca1..912592dc 100644
--- a/requirements/developer.txt
+++ b/requirements/developer.txt
@@ -1,2 +1,2 @@
-pre-commit>=2.19
+pre-commit>=2.20
 mypy>=0.961