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A pytest plugin to enable format checking with black

Project description

pytest-black

Build Status

A pytest plugin to enable format checking with black.

Requirements

There is a minimum requirement of black 19.3b0 or later.

Installation

$ pip install pytest-black

Usage

To run pytest with formatting checks provided by black:

$ pytest --black

The plugin will output a diff of suggested formatting changes (if any exist). Changes will not be applied automatically.

Configuration

You can override default black configuration options by placing a pyproject.toml file in your project directory. See example configuration here.

Python package management

For poetry to work correctly, include this in your pyproject.toml configuration file:

[tool.poetry.dev-dependencies]
...
black = { version = "*", allow-prereleases = true }
...

This is necessary because at the time of writing all the black releases in PyPI have been tagged as pre-releases (beta code), which breaks poetry's dependency resolution.

Testing

To run the tests against a selection of Python interpreters:

$ tox

To run against a specific interpreter (e.g. Python 3.6):

$ tox -e py36

The tox.ini file in the root of this repository is used to configure the test environment.

License

Distributed under the terms of the MIT license, pytest-black is free and open source software

Issues

If you encounter any problems, please file an issue along with a detailed description.

Project details


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