[![Latest version on
PyPi](https://badge.fury.io/py/tox.svg)](https://badge.fury.io/py/tox)
[![Supported Python
versions](https://img.shields.io/pypi/pyversions/tox.svg)](https://pypi.org/project/tox/)
[![Azure Pipelines build
status](https://dev.azure.com/toxdev/tox/_apis/build/status/tox%20ci?branchName=master)](https://dev.azure.com/toxdev/tox/_build/latest?definitionId=9&branchName=master)
[![Documentation
status](https://readthedocs.org/projects/tox/badge/?version=latest&style=flat-square)](https://tox.readthedocs.io/en/latest/?badge=latest)
[![Code style:
black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/python/black)

# tox automation project

**Command line driven CI frontend and development task automation tool**

At its core tox povides a convenient way to run arbitrary commands in
isolated environments to serve as a single entry point for build, test
and release activities.

tox is highly
[configurable](https://tox.readthedocs.io/en/latest/config.html) and
[pluggable](https://tox.readthedocs.io/en/latest/plugins.html).

## Example: run tests with Python 2.7 and Python 3.7

tox is mainly used as a command line tool and needs a `tox.ini` or a
`tool.tox` section in `pyproject.toml` containing the configuration.

To test a simple project that has some tests, here is an example with
a `tox.ini` in the root of the project:

``` {.sourceCode .ini}
[tox]
envlist = py27,py37

[testenv]
deps = pytest
commands = pytest
```

``` {.sourceCode .console}
$ tox

[lots of output from what tox does]
[lots of output from commands that were run]

__________________ summary _________________
  py27: commands succeeded
  py37: commands succeeded
  congratulations :)
```

tox created two ``testenvs`` - one based on Python2.7 and one based on
Python3.7, it installed pytest in them and ran the tests. The report at
the end summarizes which ``testenvs`` have failed and which have
succeeded.

**Note:** To learn more about what you can do with tox, have a look at
[the collection of examples in the
documentation](https://tox.readthedocs.io/en/latest/examples.html)
or [existing projects using
tox](https://github.com/search?l=INI&q=tox.ini+in%3Apath&type=Code).

### How it works

tox creates virtual environments for all configured so called
``testenvs``, it then installs the project and other necessary
dependencies and runs the configured set of commands. See [system
overview](https://tox.readthedocs.io/en/latest/#system-overview) for
more details.

### tox can be used for ...

-   creating development environments
-   running static code analysis and test tools
-   automating package builds
-   running tests against the package build by tox
-   checking that packages install correctly with different Python
    versions/interpreters
-   unifying Continuous Integration and command line based testing
-   building and deploying project documentation
-   releasing a package to PyPI or any other platform
-   limit: your imagination

### Documentation

Documentation for tox can be found at [Read The Docs](https://tox.readthedocs.org).

### Communication and questions

If you have questions or suggestions you can first check if they have already
been answered or discussed on our [issue tracker](https://github.com/tox-dev/tox/issues?utf8=%E2%9C%93&q=is%3Aissue+sort%3Aupdated-desc+label%3A%22type%3Aquestion+%3Agrey_question%3A%22+)
on [Stack Overflow (tagged with `tox`)](https://stackoverflow.com/questions/tagged/tox).

If you want to discuss topics or propose changes that might not (yet)
fit into an issue, you can get in touch via mail through
<tox-dev@python.org>.

We also have a [Gitter community](https://gitter.im/tox-dev/).

### Contributing

Contributions are welcome. See
[contributing](https://github.com/tox-dev/tox/blob/master/CONTRIBUTING.rst)
and our [Contributor Covenant Code of
Conduct](https://github.com/tox-dev/tox/blob/master/CODE_OF_CONDUCT.md).

Currently the [code](https://github.com/tox-dev/tox) and the
[issues](https://github.com/tox-dev/tox/issues) are hosted on Github.

The project is licensed under
[MIT](https://github.com/tox-dev/tox/blob/master/LICENSE).
