Nox
Flexible test automation with Python
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Documentation: https://nox.readthedocs.io
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Source Code: https://github.com/wntrblm/nox
Overview
nox is a command-line tool that automates testing in multiple Python environments, similar to tox. Unlike tox, Nox uses a standard Python file for configuration:
import nox
@nox.session
def tests(session: nox.Session) -> None:
session.install("pytest")
session.run("pytest")
@nox.session
def lint(session: nox.Session) -> None:
session.install("flake8")
session.run("flake8", "--import-order-style", "google")
Installation
Nox is designed to be installed globally (not in a project virtual environment), the recommended way of doing this is via pipx, a tool designed to install python CLI programs whilst keeping them separate from your global or system python.
To install Nox with pipx:
pipx install nox
You can also use pip in your global python:
python3 -m pip install nox
You may want to use the user-site to avoid messing with your Global python install:
python3 -m pip install --user nox
Usage
List all sessions
nox -l/--list
Get help on a particular session (if it has a docstring)
nox --usage test
Run all sessions
nox
Run a particular session
nox -s/--session test
Checkout the docs for more! 🎉
Contributing
Nox is an open source project and welcomes contributions of all kinds, checkout the contributing guide for help on how to help us out!
All contributors must follow the code of conduct and be nice to one another! 😃
6 maintainers
Release files for nox 2026.8.17
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| nox-2026.8.17.tar.gz | 4.1 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| nox-2026.8.17-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 4.2 MB
Release files / nox-2026.8.17.tar.gz
| Download URL | nox-2026.8.17.tar.gz |
|---|---|
| Size | 4.1 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
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Transparency logRelease files / nox-2026.8.17-py3-none-any.whl
| Download URL | nox-2026.8.17-py3-none-any.whl |
|---|---|
| Size | 94.8 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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BLAKE2b-256 checksum How to use checksums |
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|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 18, 2026.
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