diff --git a/.appveyor.yml b/.appveyor.yml
index 770d9a50..ba6d5049 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,47 +1,13 @@
 version: '{build}'
-image: Visual Studio 2015
-platform:
-- x86
-- x64
-environment:
-  global:
-    DISTUTILS_USE_SDK: 1
-    PYTHONWARNINGS: ignore:DEPRECATION
-    MSSdk: 1
-  matrix:
-  - PYTHON: 27
-  - PYTHON: 36
-  - CONDA: 27
-  - CONDA: 36
+image: Visual Studio 2019
+stack: python 3.7
+skip_branch_with_pr: true
+init:
+- cmd: set PATH=C:\Python37;C:\Python37\Scripts;%PATH%
 install:
-- cmd: '"%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat" %PLATFORM%'
-- ps: |
-    if ($env:PYTHON) {
-      if ($env:PLATFORM -eq "x64") { $env:PYTHON = "$env:PYTHON-x64" }
-      $env:PATH = "C:\Python$env:PYTHON\;C:\Python$env:PYTHON\Scripts\;$env:PATH"
-      python -m pip install --disable-pip-version-check --user --upgrade pip setuptools
-    } elseif ($env:CONDA) {
-      if ($env:CONDA -eq "27") { $env:CONDA = "" }
-      if ($env:PLATFORM -eq "x64") { $env:CONDA = "$env:CONDA-x64" }
-      $env:PATH = "C:\Miniconda$env:CONDA\;C:\Miniconda$env:CONDA\Scripts\;$env:PATH"
-      conda config --set always_yes yes --set changeps1 no
-      conda config --add channels conda-forge
-      conda update -q conda
-      conda install -q conda-build
-    }
+- ps: python -m pip install --disable-pip-version-check --upgrade --no-warn-script-location pip build virtualenv wheel
 build_script:
 - ps: |
-    if ($env:PYTHON) {
-      python setup.py sdist
-      python -m pip install 'pybind11>=2.3'
-      cd dist
-      python -m pip install --verbose python_example-0.0.1.tar.gz
-      cd ..
-    } else {
-      echo "conda build conda.recipe"
-      conda build conda.recipe
-      echo "conda install --use-local python_example"
-      conda install --use-local python_example
-    }
+    python -m pip install .
 test_script:
 - ps: python tests\test.py
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..6c4b3695
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      actions:
+        patterns:
+          - "*"
diff --git a/.github/workflows/conda.yml b/.github/workflows/conda.yml
new file mode 100644
index 00000000..e49d0580
--- /dev/null
+++ b/.github/workflows/conda.yml
@@ -0,0 +1,48 @@
+name: Conda
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [ubuntu-latest, windows-latest, macos-12]
+        python-version: ["3.8", "3.10"]
+
+    runs-on: ${{ matrix.platform }}
+
+    # The setup-miniconda action needs this to activate miniconda
+    defaults:
+      run:
+        shell: "bash -l {0}"
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Get conda
+        uses: conda-incubator/setup-miniconda@v3.0.4
+        with:
+          python-version: ${{ matrix.python-version }}
+          channels: conda-forge
+
+      - name: Prepare
+        run: conda install conda-build conda-verify
+
+      - name: Build
+        run: conda build conda.recipe
+
+      - name: Install
+        run: conda install -c ${CONDA_PREFIX}/conda-bld/ python_example
+
+      - name: Test
+        run: python tests/test.py
diff --git a/.github/workflows/pip.yml b/.github/workflows/pip.yml
new file mode 100644
index 00000000..3a0c49ca
--- /dev/null
+++ b/.github/workflows/pip.yml
@@ -0,0 +1,70 @@
+name: Pip
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - master
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [windows-latest, macos-13, ubuntu-latest]
+        python-version: ["3.7", "3.11"]
+
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Add requirements
+      run: python -m pip install --upgrade wheel setuptools
+
+    - name: Build and install
+      run: pip install --verbose .
+
+    - name: Test
+      run: python tests/test.py
+
+  build-mingw64:
+    runs-on: windows-latest
+    defaults:
+      run:
+        shell: msys2 {0}
+    steps:
+    - uses: msys2/setup-msys2@v2
+      with:
+        update: true
+        install: >-
+          mingw-w64-x86_64-gcc
+          mingw-w64-x86_64-python-pip
+          mingw-w64-x86_64-python-wheel
+
+    - uses: actions/checkout@v4
+
+    - name: Install pybind11
+      # This is required because --no-build-isolation disable dependences
+      # installation
+      run: pip install pybind11
+
+    - name: Build and install
+      # --no-build-isolation is required because the vanilla setuptool does not
+      # support Mingw64.See patches here:
+      # https://github.com/msys2/MINGW-packages/tree/master/mingw-w64-python-setuptools
+      # Without those patches build_ext fails with:
+      # error: --plat-name must be one of ('win32', 'win-amd64', 'win-arm32', 'win-arm64')
+      run: pip install --no-build-isolation .
+
+    - name: Test
+      run: python tests/test.py
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
new file mode 100644
index 00000000..51d7228a
--- /dev/null
+++ b/.github/workflows/wheels.yml
@@ -0,0 +1,81 @@
+name: Wheels
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+     - master
+  release:
+    types:
+      - published
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build_sdist:
+    name: Build SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build SDist
+      run: pipx run build --sdist
+
+    - name: Check metadata
+      run: pipx run twine check dist/*
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: cibw-sdist
+        path: dist/*.tar.gz
+
+
+  build_wheels:
+    name: Wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: pypa/cibuildwheel@v2.17
+      env:
+        CIBW_ARCHS_MACOS: auto universal2
+
+    - name: Verify clean directory
+      run: git diff --exit-code
+      shell: bash
+
+    - name: Upload wheels
+      uses: actions/upload-artifact@v4
+      with:
+        name: cibw-wheels-${{ matrix.os }}
+        path: wheelhouse/*.whl
+
+
+  upload_all:
+    name: Upload if release
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+
+    steps:
+    - uses: actions/setup-python@v5
+      with:
+        python-version: "3.x"
+
+    - uses: actions/download-artifact@v4
+      with:
+        pattern: cibw-*
+        path: dist
+        merge-multiple: true
+    - uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_password }}
diff --git a/.gitignore b/.gitignore
index 839282bf..78d45bdb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,140 @@
+# Using https://github.com/github/gitignore/blob/master/Python.gitignore
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
 *.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
 MANIFEST
-*.py[cod]
-*.egg-info
-.DS_Store
-_build
-_generate
-build
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 00000000..e5aa42b0
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,54 @@
+# To use:
+#
+#     pre-commit run -a
+#
+# Or:
+#
+#     pre-commit install  # (runs every time you commit in git)
+#
+# To update this file:
+#
+#     pre-commit autoupdate
+#
+# See https://github.com/pre-commit/pre-commit
+
+ci:
+  autoupdate_commit_msg: "chore: update pre-commit hooks"
+  autofix_commit_msg: "style: pre-commit fixes"
+
+repos:
+# Standard hooks
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.6.0
+  hooks:
+  - id: check-added-large-files
+  - id: check-case-conflict
+  - id: check-merge-conflict
+  - id: check-symlinks
+  - id: check-yaml
+    exclude: ^conda\.recipe/meta\.yaml$
+  - id: debug-statements
+  - id: end-of-file-fixer
+  - id: mixed-line-ending
+  - id: requirements-txt-fixer
+  - id: trailing-whitespace
+
+# Lints code
+- repo: https://github.com/astral-sh/ruff-pre-commit
+  rev: "v0.4.2"
+  hooks:
+  - id: ruff
+    args: ["--fix", "--show-fixes"]
+  - id: ruff-format
+
+# Changes tabs to spaces
+- repo: https://github.com/Lucas-C/pre-commit-hooks
+  rev: v1.5.5
+  hooks:
+  - id: remove-tabs
+
+# Suggested hook if you add a .clang-format file
+# - repo: https://github.com/pre-commit/mirrors-clang-format
+#  rev: v13.0.0
+#  hooks:
+#  - id: clang-format
diff --git a/.travis.yml b/.travis.yml
index 832feca6..4cda4773 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,37 +3,18 @@ dist: trusty
 matrix:
   include:
   - os: linux
-    env: PYTHON=2.7
+    env: PYTHON=3.8
   - os: linux
-    env: PYTHON=3.6
-  - os: linux
-    env: CONDA=2.7
-  - os: linux
-    env: CONDA=3.6
-  - os: osx
-    env: PYTHON=2.7
-  - os: osx
-    env: PYTHON=3.6
-  - os: osx
-    env: CONDA=2.7
-  - os: osx
-    env: CONDA=3.6
+    env: CONDA=3.7
 before_install:
 - |
-  if [ "$TRAVIS_OS_NAME" = "linux" ]; then export CXX=g++-4.8 CC=gcc-4.8; fi
+  export CXX=g++-4.8 CC=gcc-4.8
   if [ -n "$PYTHON" ]; then
-    if [ "$TRAVIS_OS_NAME" = "osx" ]; then
-      export PATH="/Users/travis/Library/Python/2.7/bin:$PATH"
-      if [ "${PYTHON:0:1}" = "3" ]; then
-        brew update; brew install python3;
-      fi
-    fi
     python -m pip install --user virtualenv
     virtualenv -p python${PYTHON:0:1} venv
     source venv/bin/activate
   elif [ -n "$CONDA" ]; then
-    if [ "$TRAVIS_OS_NAME" = "linux" ]; then OS=Linux-x86_64; else OS=MacOSX-x86_64; fi
-    wget -O miniconda.sh https://repo.continuum.io/miniconda/Miniconda${CONDA:0:1}-latest-$OS.sh
+    wget -O miniconda.sh https://repo.continuum.io/miniconda/Miniconda${CONDA:0:1}-latest-Linux-x86_64.sh
     bash miniconda.sh -b -p $HOME/miniconda
     export PATH="$HOME/miniconda/bin:$PATH"
     conda config --set always_yes yes --set changeps1 no
@@ -46,11 +27,9 @@ before_install:
 install:
 - |
   if [ -n "$PYTHON" ]; then
-    python setup.py sdist
-    python -m pip install 'pybind11>=2.3'
-    python -m pip install --verbose dist/*.tar.gz
+    python -m pip install .
   elif [ -n "$CONDA" ]; then
-    conda build conda.recipe
+    conda build conda.recipe --python $CONDA
     conda install --use-local python_example
   fi
 script:
diff --git a/README.md b/README.md
index dbad46ea..ed4c6c4c 100644
--- a/README.md
+++ b/README.md
@@ -1,58 +1,48 @@
 python_example
 ==============
 
+[![Gitter][gitter-badge]][gitter-link]
+
+|      CI              | status |
+|----------------------|--------|
+| Linux/macOS Travis   | [![Travis-CI][travis-badge]][travis-link] |
+| MSVC 2019            | [![AppVeyor][appveyor-badge]][appveyor-link] |
+| conda.recipe         | [![Conda Actions Status][actions-conda-badge]][actions-conda-link] |
+| pip builds           | [![Pip Actions Status][actions-pip-badge]][actions-pip-link] |
+| [`cibuildwheel`][]   | [![Wheels Actions Status][actions-wheels-badge]][actions-wheels-link] |
+
+[gitter-badge]:            https://badges.gitter.im/pybind/Lobby.svg
+[gitter-link]:             https://gitter.im/pybind/Lobby
+[actions-badge]:           https://github.com/pybind/python_example/workflows/Tests/badge.svg
+[actions-conda-link]:      https://github.com/pybind/python_example/actions?query=workflow%3A%22Conda
+[actions-conda-badge]:     https://github.com/pybind/python_example/workflows/Conda/badge.svg
+[actions-pip-link]:        https://github.com/pybind/python_example/actions?query=workflow%3A%22Pip
+[actions-pip-badge]:       https://github.com/pybind/python_example/workflows/Pip/badge.svg
+[actions-wheels-link]:     https://github.com/pybind/python_example/actions?query=workflow%3AWheels
+[actions-wheels-badge]:    https://github.com/pybind/python_example/workflows/Wheels/badge.svg
+[travis-link]:             https://travis-ci.org/pybind/python_example
+[travis-badge]:            https://travis-ci.org/pybind/python_example.svg?branch=master&status=passed
+[appveyor-link]:           https://ci.appveyor.com/project/wjakob/python-example
+<!-- TODO: get a real badge link for appveyor -->
+[appveyor-badge]:          https://travis-ci.org/pybind/python_example.svg?branch=master&status=passed
+
 An example project built with [pybind11](https://github.com/pybind/pybind11).
+This requires Python 3.7+; for older versions of Python, check the commit
+history.
 
 Installation
 ------------
 
-**On Unix (Linux, OS X)**
-
  - clone this repository
  - `pip install ./python_example`
 
-**On Windows (Requires Visual Studio 2015)**
-
- - For Python 3.5:
-     - clone this repository
-     - `pip install ./python_example`
- - For earlier versions of Python, including Python 2.7:
-
-   Pybind11 requires a C++11 compliant compiler (i.e. Visual Studio 2015 on
-   Windows). Running a regular `pip install` command will detect the version
-   of the compiler used to build Python and attempt to build the extension
-   with it. We must force the use of Visual Studio 2015.
-
-     - clone this repository
-     - `"%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat" x64`
-     - `set DISTUTILS_USE_SDK=1`
-     - `set MSSdk=1`
-     - `pip install ./python_example`
-
-   Note that this requires the user building `python_example` to have registry edition
-   rights on the machine, to be able to run the `vcvarsall.bat` script.
-
+CI Examples
+-----------
 
-Windows runtime requirements
-----------------------------
-
-On Windows, the Visual C++ 2015 redistributable packages are a runtime
-requirement for this project. It can be found [here](https://www.microsoft.com/en-us/download/details.aspx?id=48145).
-
-If you use the Anaconda python distribution, you may require the Visual Studio
-runtime as a platform-dependent runtime requirement for you package:
-
-```yaml
-requirements:
-  build:
-    - python
-    - setuptools
-    - pybind11
-
-  run:
-   - python
-   - vs2015_runtime  # [win]
-```
+There are examples for CI in `.github/workflows`. A simple way to produces
+binary "wheels" for all platforms is illustrated in the "wheels.yml" file,
+using [`cibuildwheel`][]. You can also see a basic recipe for building and
+testing in `pip.yml`, and `conda.yml` has an example of a conda recipe build.
 
 
 Building the documentation
@@ -81,3 +71,5 @@ Test call
 import python_example
 python_example.add(1, 2)
 ```
+
+[`cibuildwheel`]:          https://cibuildwheel.readthedocs.io
diff --git a/conda.recipe/bld.bat b/conda.recipe/bld.bat
deleted file mode 100644
index 1e575cb8..00000000
--- a/conda.recipe/bld.bat
+++ /dev/null
@@ -1,6 +0,0 @@
-if "%ARCH%" == "32" (set PLATFORM=x86) else (set PLATFORM=x64)
-call "%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat" %PLATFORM%
-set DISTUTILS_USE_SDK=1
-set MSSdk=1
-"%PYTHON%" setup.py install
-if errorlevel 1 exit 1
diff --git a/conda.recipe/build.sh b/conda.recipe/build.sh
deleted file mode 100644
index fc3a9afa..00000000
--- a/conda.recipe/build.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-unset MACOSX_DEPLOYMENT_TARGET
-${PYTHON} setup.py install;
diff --git a/conda.recipe/meta.yaml b/conda.recipe/meta.yaml
index a62d2ebc..ce9119a6 100644
--- a/conda.recipe/meta.yaml
+++ b/conda.recipe/meta.yaml
@@ -1,31 +1,34 @@
 package:
   name: python_example
-  version: {{ environ.get('GIT_DESCRIBE_TAG', 'dev') }}
-
-build:
-  number: {{ environ.get('GIT_DESCRIBE_NUMBER', 0) }}
-  {% if environ.get('GIT_DESCRIBE_NUMBER', '0') == '0' %}string: py{{ environ.get('PY_VER').replace('.', '') }}_0
-  {% else %}string: py{{ environ.get('PY_VER').replace('.', '') }}_{{ environ.get('GIT_BUILD_STR', 'GIT_STUB') }}{% endif %}
-  script_env:
-    - CC
-    - CXX
+  version: 0.0.1
 
 source:
-  git_url: ../
+  path: ..
+
+build:
+  number: 0
+  script: {{ PYTHON }} -m pip install . -vvv
 
 requirements:
   build:
+    - {{ compiler('cxx') }}
+
+  host:
     - python
-    - setuptools
-    - pybind11
+    - pip
+    - pybind11 >=2.10.0
 
   run:
     - python
-    - vs2015_runtime  # [win]
+
 
 test:
   imports:
     - python_example
+  source_files:
+    - tests
+  commands:
+    - python tests/test.py
 
 about:
   summary: An example project built with pybind11.
diff --git a/docs/conf.py b/docs/conf.py
index a21ab506..234d003c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 #
 # python_example documentation build configuration file, created by
 # sphinx-quickstart on Fri Feb 26 00:29:33 2016.
@@ -12,58 +11,56 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys
-import os
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-#sys.path.insert(0, os.path.abspath('.'))
+# sys.path.insert(0, os.path.abspath('.'))
 
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-#needs_sphinx = '1.0'
+# needs_sphinx = '1.0'
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-    'sphinx.ext.autosummary',
-    'sphinx.ext.napoleon',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.autosummary",
+    "sphinx.ext.napoleon",
 ]
 
 autosummary_generate = True
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
 # source_suffix = ['.rst', '.md']
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The encoding of source files.
-#source_encoding = 'utf-8-sig'
+# source_encoding = 'utf-8-sig'
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = u'python_example'
-copyright = u'2016, Sylvain Corlay'
-author = u'Sylvain Corlay'
+project = "python_example"
+copyright = "2016, Sylvain Corlay"
+author = "Sylvain Corlay"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'0.0.1'
+version = "0.0.1"
 # The full version, including alpha/beta/rc tags.
-release = u'0.0.1'
+release = "0.0.1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -74,37 +71,37 @@
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
-#today = ''
+# today = ''
 # Else, today_fmt is used as the format for a strftime call.
-#today_fmt = '%B %d, %Y'
+# today_fmt = '%B %d, %Y'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = ["_build"]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
-#default_role = None
+# default_role = None
 
 # If true, '()' will be appended to :func: etc. cross-reference text.
-#add_function_parentheses = True
+# add_function_parentheses = True
 
 # If true, the current module name will be prepended to all description
 # unit titles (such as .. function::).
-#add_module_names = True
+# add_module_names = True
 
 # If true, sectionauthor and moduleauthor directives will be shown in the
 # output. They are ignored by default.
-#show_authors = False
+# show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 # A list of ignored prefixes for module index sorting.
-#modindex_common_prefix = []
+# modindex_common_prefix = []
 
 # If true, keep warnings as "system message" paragraphs in the built documents.
-#keep_warnings = False
+# keep_warnings = False
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = False
@@ -114,143 +111,145 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'alabaster'
+html_theme = "alabaster"
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-#html_theme_options = {}
+# html_theme_options = {}
 
 # Add any paths that contain custom themes here, relative to this directory.
-#html_theme_path = []
+# html_theme_path = []
 
 # The name for this set of Sphinx documents.  If None, it defaults to
 # "<project> v<release> documentation".
-#html_title = None
+# html_title = None
 
 # A shorter title for the navigation bar.  Default is the same as html_title.
-#html_short_title = None
+# html_short_title = None
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
-#html_logo = None
+# html_logo = None
 
 # The name of an image file (within the static path) to use as favicon of the
 # docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
-#html_favicon = None
+# html_favicon = None
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied
 # directly to the root of the documentation.
-#html_extra_path = []
+# html_extra_path = []
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.
-#html_last_updated_fmt = '%b %d, %Y'
+# html_last_updated_fmt = '%b %d, %Y'
 
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
-#html_use_smartypants = True
+# html_use_smartypants = True
 
 # Custom sidebar templates, maps document names to template names.
-#html_sidebars = {}
+# html_sidebars = {}
 
 # Additional templates that should be rendered to pages, maps page names to
 # template names.
-#html_additional_pages = {}
+# html_additional_pages = {}
 
 # If false, no module index is generated.
-#html_domain_indices = True
+# html_domain_indices = True
 
 # If false, no index is generated.
-#html_use_index = True
+# html_use_index = True
 
 # If true, the index is split into individual pages for each letter.
-#html_split_index = False
+# html_split_index = False
 
 # If true, links to the reST sources are added to the pages.
-#html_show_sourcelink = True
+# html_show_sourcelink = True
 
 # If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
-#html_show_sphinx = True
+# html_show_sphinx = True
 
 # If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
-#html_show_copyright = True
+# html_show_copyright = True
 
 # If true, an OpenSearch description file will be output, and all pages will
 # contain a <link> tag referring to it.  The value of this option must be the
 # base URL from which the finished HTML is served.
-#html_use_opensearch = ''
+# html_use_opensearch = ''
 
 # This is the file name suffix for HTML files (e.g. ".xhtml").
-#html_file_suffix = None
+# html_file_suffix = None
 
 # Language to be used for generating the HTML full-text search index.
 # Sphinx supports the following languages:
 #   'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
 #   'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr'
-#html_search_language = 'en'
+# html_search_language = 'en'
 
 # A dictionary with options for the search language support, empty by default.
 # Now only 'ja' uses this config value
-#html_search_options = {'type': 'default'}
+# html_search_options = {'type': 'default'}
 
 # The name of a javascript file (relative to the configuration directory) that
 # implements a search results scorer. If empty, the default will be used.
-#html_search_scorer = 'scorer.js'
+# html_search_scorer = 'scorer.js'
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'python_exampledoc'
+htmlhelp_basename = "python_exampledoc"
 
 # -- Options for LaTeX output ---------------------------------------------
 
 latex_elements = {
-# The paper size ('letterpaper' or 'a4paper').
-#'papersize': 'letterpaper',
-
-# The font size ('10pt', '11pt' or '12pt').
-#'pointsize': '10pt',
-
-# Additional stuff for the LaTeX preamble.
-#'preamble': '',
-
-# Latex figure (float) alignment
-#'figure_align': 'htbp',
+    # The paper size ('letterpaper' or 'a4paper').
+    #'papersize': 'letterpaper',
+    # The font size ('10pt', '11pt' or '12pt').
+    #'pointsize': '10pt',
+    # Additional stuff for the LaTeX preamble.
+    #'preamble': '',
+    # Latex figure (float) alignment
+    #'figure_align': 'htbp',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, 'python_example.tex', u'python_example Documentation',
-     u'Sylvain Corlay', 'manual'),
+    (
+        master_doc,
+        "python_example.tex",
+        "python_example Documentation",
+        "Sylvain Corlay",
+        "manual",
+    ),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
 # the title page.
-#latex_logo = None
+# latex_logo = None
 
 # For "manual" documents, if this is true, then toplevel headings are parts,
 # not chapters.
-#latex_use_parts = False
+# latex_use_parts = False
 
 # If true, show page references after internal links.
-#latex_show_pagerefs = False
+# latex_show_pagerefs = False
 
 # If true, show URL addresses after external links.
-#latex_show_urls = False
+# latex_show_urls = False
 
 # Documents to append as an appendix to all manuals.
-#latex_appendices = []
+# latex_appendices = []
 
 # If false, no module index is generated.
-#latex_domain_indices = True
+# latex_domain_indices = True
 
 
 # -- Options for manual page output ---------------------------------------
@@ -258,12 +257,11 @@
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    (master_doc, 'python_example', u'python_example Documentation',
-     [author], 1)
+    (master_doc, "python_example", "python_example Documentation", [author], 1)
 ]
 
 # If true, show URL addresses after external links.
-#man_show_urls = False
+# man_show_urls = False
 
 
 # -- Options for Texinfo output -------------------------------------------
@@ -272,23 +270,29 @@
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'python_example', u'python_example Documentation',
-     author, 'python_example', 'One line description of project.',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "python_example",
+        "python_example Documentation",
+        author,
+        "python_example",
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]
 
 # Documents to append as an appendix to all manuals.
-#texinfo_appendices = []
+# texinfo_appendices = []
 
 # If false, no module index is generated.
-#texinfo_domain_indices = True
+# texinfo_domain_indices = True
 
 # How to display URL addresses: 'footnote', 'no', or 'inline'.
-#texinfo_show_urls = 'footnote'
+# texinfo_show_urls = 'footnote'
 
 # If true, do not generate a @detailmenu in the "Top" node's menu.
-#texinfo_no_detailmenu = False
+# texinfo_no_detailmenu = False
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/': None}
+intersphinx_mapping = {"https://docs.python.org/": None}
diff --git a/docs/index.rst b/docs/index.rst
index 998e67bb..4b3ddca5 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -7,4 +7,3 @@ Contents:
    :maxdepth: 2
 
    python_example
-
diff --git a/docs/make.bat b/docs/make.bat
index 460bef91..a81981e1 100644
--- a/docs/make.bat
+++ b/docs/make.bat
@@ -3,48 +3,48 @@
 REM Command file for Sphinx documentation
 
 if "%SPHINXBUILD%" == "" (
-	set SPHINXBUILD=sphinx-build
+    set SPHINXBUILD=sphinx-build
 )
 set BUILDDIR=_build
 set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% .
 set I18NSPHINXOPTS=%SPHINXOPTS% .
 if NOT "%PAPER%" == "" (
-	set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
-	set I18NSPHINXOPTS=-D latex_paper_size=%PAPER% %I18NSPHINXOPTS%
+    set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
+    set I18NSPHINXOPTS=-D latex_paper_size=%PAPER% %I18NSPHINXOPTS%
 )
 
 if "%1" == "" goto help
 
 if "%1" == "help" (
-	:help
-	echo.Please use `make ^<target^>` where ^<target^> is one of
-	echo.  html       to make standalone HTML files
-	echo.  dirhtml    to make HTML files named index.html in directories
-	echo.  singlehtml to make a single large HTML file
-	echo.  pickle     to make pickle files
-	echo.  json       to make JSON files
-	echo.  htmlhelp   to make HTML files and a HTML help project
-	echo.  qthelp     to make HTML files and a qthelp project
-	echo.  devhelp    to make HTML files and a Devhelp project
-	echo.  epub       to make an epub
-	echo.  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter
-	echo.  text       to make text files
-	echo.  man        to make manual pages
-	echo.  texinfo    to make Texinfo files
-	echo.  gettext    to make PO message catalogs
-	echo.  changes    to make an overview over all changed/added/deprecated items
-	echo.  xml        to make Docutils-native XML files
-	echo.  pseudoxml  to make pseudoxml-XML files for display purposes
-	echo.  linkcheck  to check all external links for integrity
-	echo.  doctest    to run all doctests embedded in the documentation if enabled
-	echo.  coverage   to run coverage check of the documentation if enabled
-	goto end
+    :help
+    echo.Please use `make ^<target^>` where ^<target^> is one of
+    echo.  html       to make standalone HTML files
+    echo.  dirhtml    to make HTML files named index.html in directories
+    echo.  singlehtml to make a single large HTML file
+    echo.  pickle     to make pickle files
+    echo.  json       to make JSON files
+    echo.  htmlhelp   to make HTML files and a HTML help project
+    echo.  qthelp     to make HTML files and a qthelp project
+    echo.  devhelp    to make HTML files and a Devhelp project
+    echo.  epub       to make an epub
+    echo.  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter
+    echo.  text       to make text files
+    echo.  man        to make manual pages
+    echo.  texinfo    to make Texinfo files
+    echo.  gettext    to make PO message catalogs
+    echo.  changes    to make an overview over all changed/added/deprecated items
+    echo.  xml        to make Docutils-native XML files
+    echo.  pseudoxml  to make pseudoxml-XML files for display purposes
+    echo.  linkcheck  to check all external links for integrity
+    echo.  doctest    to run all doctests embedded in the documentation if enabled
+    echo.  coverage   to run coverage check of the documentation if enabled
+    goto end
 )
 
 if "%1" == "clean" (
-	for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
-	del /q /s %BUILDDIR%\*
-	goto end
+    for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
+    del /q /s %BUILDDIR%\*
+    goto end
 )
 
 
@@ -58,206 +58,206 @@ goto sphinx_ok
 set SPHINXBUILD=python -m sphinx.__init__
 %SPHINXBUILD% 2> nul
 if errorlevel 9009 (
-	echo.
-	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
-	echo.installed, then set the SPHINXBUILD environment variable to point
-	echo.to the full path of the 'sphinx-build' executable. Alternatively you
-	echo.may add the Sphinx directory to PATH.
-	echo.
-	echo.If you don't have Sphinx installed, grab it from
-	echo.http://sphinx-doc.org/
-	exit /b 1
+    echo.
+    echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+    echo.installed, then set the SPHINXBUILD environment variable to point
+    echo.to the full path of the 'sphinx-build' executable. Alternatively you
+    echo.may add the Sphinx directory to PATH.
+    echo.
+    echo.If you don't have Sphinx installed, grab it from
+    echo.http://sphinx-doc.org/
+    exit /b 1
 )
 
 :sphinx_ok
 
 
 if "%1" == "html" (
-	%SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The HTML pages are in %BUILDDIR%/html.
-	goto end
+    %SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The HTML pages are in %BUILDDIR%/html.
+    goto end
 )
 
 if "%1" == "dirhtml" (
-	%SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
-	goto end
+    %SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
+    goto end
 )
 
 if "%1" == "singlehtml" (
-	%SPHINXBUILD% -b singlehtml %ALLSPHINXOPTS% %BUILDDIR%/singlehtml
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The HTML pages are in %BUILDDIR%/singlehtml.
-	goto end
+    %SPHINXBUILD% -b singlehtml %ALLSPHINXOPTS% %BUILDDIR%/singlehtml
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The HTML pages are in %BUILDDIR%/singlehtml.
+    goto end
 )
 
 if "%1" == "pickle" (
-	%SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished; now you can process the pickle files.
-	goto end
+    %SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished; now you can process the pickle files.
+    goto end
 )
 
 if "%1" == "json" (
-	%SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished; now you can process the JSON files.
-	goto end
+    %SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished; now you can process the JSON files.
+    goto end
 )
 
 if "%1" == "htmlhelp" (
-	%SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished; now you can run HTML Help Workshop with the ^
+    %SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished; now you can run HTML Help Workshop with the ^
 .hhp project file in %BUILDDIR%/htmlhelp.
-	goto end
+    goto end
 )
 
 if "%1" == "qthelp" (
-	%SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished; now you can run "qcollectiongenerator" with the ^
+    %SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished; now you can run "qcollectiongenerator" with the ^
 .qhcp project file in %BUILDDIR%/qthelp, like this:
-	echo.^> qcollectiongenerator %BUILDDIR%\qthelp\python_example.qhcp
-	echo.To view the help file:
-	echo.^> assistant -collectionFile %BUILDDIR%\qthelp\python_example.ghc
-	goto end
+    echo.^> qcollectiongenerator %BUILDDIR%\qthelp\python_example.qhcp
+    echo.To view the help file:
+    echo.^> assistant -collectionFile %BUILDDIR%\qthelp\python_example.ghc
+    goto end
 )
 
 if "%1" == "devhelp" (
-	%SPHINXBUILD% -b devhelp %ALLSPHINXOPTS% %BUILDDIR%/devhelp
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished.
-	goto end
+    %SPHINXBUILD% -b devhelp %ALLSPHINXOPTS% %BUILDDIR%/devhelp
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished.
+    goto end
 )
 
 if "%1" == "epub" (
-	%SPHINXBUILD% -b epub %ALLSPHINXOPTS% %BUILDDIR%/epub
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The epub file is in %BUILDDIR%/epub.
-	goto end
+    %SPHINXBUILD% -b epub %ALLSPHINXOPTS% %BUILDDIR%/epub
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The epub file is in %BUILDDIR%/epub.
+    goto end
 )
 
 if "%1" == "latex" (
-	%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
-	goto end
+    %SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
+    goto end
 )
 
 if "%1" == "latexpdf" (
-	%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
-	cd %BUILDDIR%/latex
-	make all-pdf
-	cd %~dp0
-	echo.
-	echo.Build finished; the PDF files are in %BUILDDIR%/latex.
-	goto end
+    %SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
+    cd %BUILDDIR%/latex
+    make all-pdf
+    cd %~dp0
+    echo.
+    echo.Build finished; the PDF files are in %BUILDDIR%/latex.
+    goto end
 )
 
 if "%1" == "latexpdfja" (
-	%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
-	cd %BUILDDIR%/latex
-	make all-pdf-ja
-	cd %~dp0
-	echo.
-	echo.Build finished; the PDF files are in %BUILDDIR%/latex.
-	goto end
+    %SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
+    cd %BUILDDIR%/latex
+    make all-pdf-ja
+    cd %~dp0
+    echo.
+    echo.Build finished; the PDF files are in %BUILDDIR%/latex.
+    goto end
 )
 
 if "%1" == "text" (
-	%SPHINXBUILD% -b text %ALLSPHINXOPTS% %BUILDDIR%/text
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The text files are in %BUILDDIR%/text.
-	goto end
+    %SPHINXBUILD% -b text %ALLSPHINXOPTS% %BUILDDIR%/text
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The text files are in %BUILDDIR%/text.
+    goto end
 )
 
 if "%1" == "man" (
-	%SPHINXBUILD% -b man %ALLSPHINXOPTS% %BUILDDIR%/man
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The manual pages are in %BUILDDIR%/man.
-	goto end
+    %SPHINXBUILD% -b man %ALLSPHINXOPTS% %BUILDDIR%/man
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The manual pages are in %BUILDDIR%/man.
+    goto end
 )
 
 if "%1" == "texinfo" (
-	%SPHINXBUILD% -b texinfo %ALLSPHINXOPTS% %BUILDDIR%/texinfo
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The Texinfo files are in %BUILDDIR%/texinfo.
-	goto end
+    %SPHINXBUILD% -b texinfo %ALLSPHINXOPTS% %BUILDDIR%/texinfo
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The Texinfo files are in %BUILDDIR%/texinfo.
+    goto end
 )
 
 if "%1" == "gettext" (
-	%SPHINXBUILD% -b gettext %I18NSPHINXOPTS% %BUILDDIR%/locale
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The message catalogs are in %BUILDDIR%/locale.
-	goto end
+    %SPHINXBUILD% -b gettext %I18NSPHINXOPTS% %BUILDDIR%/locale
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The message catalogs are in %BUILDDIR%/locale.
+    goto end
 )
 
 if "%1" == "changes" (
-	%SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.The overview file is in %BUILDDIR%/changes.
-	goto end
+    %SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.The overview file is in %BUILDDIR%/changes.
+    goto end
 )
 
 if "%1" == "linkcheck" (
-	%SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Link check complete; look for any errors in the above output ^
+    %SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Link check complete; look for any errors in the above output ^
 or in %BUILDDIR%/linkcheck/output.txt.
-	goto end
+    goto end
 )
 
 if "%1" == "doctest" (
-	%SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Testing of doctests in the sources finished, look at the ^
+    %SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Testing of doctests in the sources finished, look at the ^
 results in %BUILDDIR%/doctest/output.txt.
-	goto end
+    goto end
 )
 
 if "%1" == "coverage" (
-	%SPHINXBUILD% -b coverage %ALLSPHINXOPTS% %BUILDDIR%/coverage
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Testing of coverage in the sources finished, look at the ^
+    %SPHINXBUILD% -b coverage %ALLSPHINXOPTS% %BUILDDIR%/coverage
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Testing of coverage in the sources finished, look at the ^
 results in %BUILDDIR%/coverage/python.txt.
-	goto end
+    goto end
 )
 
 if "%1" == "xml" (
-	%SPHINXBUILD% -b xml %ALLSPHINXOPTS% %BUILDDIR%/xml
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The XML files are in %BUILDDIR%/xml.
-	goto end
+    %SPHINXBUILD% -b xml %ALLSPHINXOPTS% %BUILDDIR%/xml
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The XML files are in %BUILDDIR%/xml.
+    goto end
 )
 
 if "%1" == "pseudoxml" (
-	%SPHINXBUILD% -b pseudoxml %ALLSPHINXOPTS% %BUILDDIR%/pseudoxml
-	if errorlevel 1 exit /b 1
-	echo.
-	echo.Build finished. The pseudo-XML files are in %BUILDDIR%/pseudoxml.
-	goto end
+    %SPHINXBUILD% -b pseudoxml %ALLSPHINXOPTS% %BUILDDIR%/pseudoxml
+    if errorlevel 1 exit /b 1
+    echo.
+    echo.Build finished. The pseudo-XML files are in %BUILDDIR%/pseudoxml.
+    goto end
 )
 
 :end
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..2b3ce52a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,24 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "pybind11>=2.10.0",
+]
+build-backend = "setuptools.build_meta"
+
+
+[tool.cibuildwheel]
+test-command = "python {project}/tests/test.py"
+test-skip = "*universal2:arm64"
+
+
+[tool.ruff]
+target-version = "py37"
+
+[tool.ruff.lint]
+extend-select = [
+  "B",   # flake8-bugbear
+  "I",   # isort
+  "PGH", # pygrep-hooks
+  "RUF", # Ruff-specific
+  "UP",  # pyupgrade
+]
diff --git a/setup.py b/setup.py
index e42810da..205144f6 100644
--- a/setup.py
+++ b/setup.py
@@ -1,113 +1,40 @@
-from setuptools import setup, Extension
-from setuptools.command.build_ext import build_ext
-import sys
-import setuptools
+# Available at setup time due to pyproject.toml
+from pybind11.setup_helpers import Pybind11Extension, build_ext
+from setuptools import setup
 
-__version__ = '0.0.1'
-
-
-class get_pybind_include(object):
-    """Helper class to determine the pybind11 include path
-
-    The purpose of this class is to postpone importing pybind11
-    until it is actually installed, so that the ``get_include()``
-    method can be invoked. """
-
-    def __init__(self, user=False):
-        self.user = user
-
-    def __str__(self):
-        import pybind11
-        return pybind11.get_include(self.user)
+__version__ = "0.0.1"
 
+# The main interface is through Pybind11Extension.
+# * You can add cxx_std=11/14/17, and then build_ext can be removed.
+# * You can set include_pybind11=false to add the include directory yourself,
+#   say from a submodule.
+#
+# Note:
+#   Sort input source files if you glob sources to ensure bit-for-bit
+#   reproducible builds (https://github.com/pybind/python_example/pull/53)
 
 ext_modules = [
-    Extension(
-        'python_example',
-        ['src/main.cpp'],
-        include_dirs=[
-            # Path to pybind11 headers
-            get_pybind_include(),
-            get_pybind_include(user=True)
-        ],
-        language='c++'
+    Pybind11Extension(
+        "python_example",
+        ["src/main.cpp"],
+        # Example: passing in the version to the compiled code
+        define_macros=[("VERSION_INFO", __version__)],
     ),
 ]
 
-
-# As of Python 3.6, CCompiler has a `has_flag` method.
-# cf http://bugs.python.org/issue26689
-def has_flag(compiler, flagname):
-    """Return a boolean indicating whether a flag name is supported on
-    the specified compiler.
-    """
-    import tempfile
-    with tempfile.NamedTemporaryFile('w', suffix='.cpp') as f:
-        f.write('int main (int argc, char **argv) { return 0; }')
-        try:
-            compiler.compile([f.name], extra_postargs=[flagname])
-        except setuptools.distutils.errors.CompileError:
-            return False
-    return True
-
-
-def cpp_flag(compiler):
-    """Return the -std=c++[11/14/17] compiler flag.
-
-    The newer version is prefered over c++11 (when it is available).
-    """
-    flags = ['-std=c++17', '-std=c++14', '-std=c++11']
-
-    for flag in flags:
-        if has_flag(compiler, flag): return flag
-
-    raise RuntimeError('Unsupported compiler -- at least C++11 support '
-                       'is needed!')
-
-
-class BuildExt(build_ext):
-    """A custom build extension for adding compiler-specific options."""
-    c_opts = {
-        'msvc': ['/EHsc'],
-        'unix': [],
-    }
-    l_opts = {
-        'msvc': [],
-        'unix': [],
-    }
-
-    if sys.platform == 'darwin':
-        darwin_opts = ['-stdlib=libc++', '-mmacosx-version-min=10.7']
-        c_opts['unix'] += darwin_opts
-        l_opts['unix'] += darwin_opts
-
-    def build_extensions(self):
-        ct = self.compiler.compiler_type
-        opts = self.c_opts.get(ct, [])
-        link_opts = self.l_opts.get(ct, [])
-        if ct == 'unix':
-            opts.append('-DVERSION_INFO="%s"' % self.distribution.get_version())
-            opts.append(cpp_flag(self.compiler))
-            if has_flag(self.compiler, '-fvisibility=hidden'):
-                opts.append('-fvisibility=hidden')
-        elif ct == 'msvc':
-            opts.append('/DVERSION_INFO=\\"%s\\"' % self.distribution.get_version())
-        for ext in self.extensions:
-            ext.extra_compile_args = opts
-            ext.extra_link_args = link_opts
-        build_ext.build_extensions(self)
-
 setup(
-    name='python_example',
+    name="python_example",
     version=__version__,
-    author='Sylvain Corlay',
-    author_email='sylvain.corlay@gmail.com',
-    url='https://github.com/pybind/python_example',
-    description='A test project using pybind11',
-    long_description='',
+    author="Sylvain Corlay",
+    author_email="sylvain.corlay@gmail.com",
+    url="https://github.com/pybind/python_example",
+    description="A test project using pybind11",
+    long_description="",
     ext_modules=ext_modules,
-    install_requires=['pybind11>=2.4'],
-    setup_requires=['pybind11>=2.4'],
-    cmdclass={'build_ext': BuildExt},
+    extras_require={"test": "pytest"},
+    # Currently, build_ext only provides an optional "highest supported C++
+    # level" feature, but in the future it may provide more features.
+    cmdclass={"build_ext": build_ext},
     zip_safe=False,
+    python_requires=">=3.7",
 )
diff --git a/src/main.cpp b/src/main.cpp
index 94d89a65..e341369b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,5 +1,8 @@
 #include <pybind11/pybind11.h>
 
+#define STRINGIFY(x) #x
+#define MACRO_STRINGIFY(x) STRINGIFY(x)
+
 int add(int i, int j) {
     return i + j;
 }
@@ -33,7 +36,7 @@ PYBIND11_MODULE(python_example, m) {
     )pbdoc");
 
 #ifdef VERSION_INFO
-    m.attr("__version__") = VERSION_INFO;
+    m.attr("__version__") = MACRO_STRINGIFY(VERSION_INFO);
 #else
     m.attr("__version__") = "dev";
 #endif
diff --git a/tests/test.py b/tests/test.py
index f877b621..5a72e5f2 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -1,5 +1,5 @@
 import python_example as m
 
-assert m.__version__ == '0.0.1'
+assert m.__version__ == "0.0.1"
 assert m.add(1, 2) == 3
 assert m.subtract(1, 2) == -1