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A pytest plugin to enable format checking with black

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A pytest plugin to enable format checking with black.



$ pip install pytest-black


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.


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


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.


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


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

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