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Hey! These docs are for version 2.10, which is no longer officially supported. Click here for the latest version, 2.15!


The Black Python code formatter (https://black.readthedocs.io/).

Backend: <span style="color: purple"><code>pants.core</code></span> Config section: <span style="color: purple"><code>[black]</code></span>

## Basic options

<div style="color: purple"> <h3><code>skip</code></h3> <code>--[no-]black-skip</code><br> <code>PANTS_BLACK_SKIP</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>False</code></span>

<br>

Don't use Black when running `./pants fmt` and `./pants lint`

</div> <br>

<div style="color: purple"> <h3><code>args</code></h3> <code>--black-args=&quot;[&lt;shell_str&gt;, &lt;shell_str&gt;, ...]&quot;</code><br> <code>PANTS_BLACK_ARGS</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>[]</code></span>

<br>

Arguments to pass directly to Black, e.g. `--black-args="--target-version=py37 --quiet"`

</div> <br>

## Advanced options

<div style="color: purple"> <h3><code>version</code></h3> <code>--black-version=&lt;str&gt;</code><br> <code>PANTS_BLACK_VERSION</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>black==22.1.0</code></span>

<br>

Requirement string for the tool.

</div> <br>

<div style="color: purple"> <h3><code>extra_requirements</code></h3> <code>--black-extra-requirements=&quot;['&lt;str&gt;', '&lt;str&gt;', ...]&quot;</code><br> <code>PANTS_BLACK_EXTRA_REQUIREMENTS</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <pre>[ "typing-extensions&gt;=3.10.0.0; python&lowbar;version &lt; \"3.10\"" ]</pre></span>

<br>

Any additional requirement strings to use with the tool. This is useful if the tool allows you to install plugins or if you need to constrain a dependency to a certain version.

</div> <br>

<div style="color: purple"> <h3><code>interpreter_constraints</code></h3> <code>--black-interpreter-constraints=&quot;['&lt;str&gt;', '&lt;str&gt;', ...]&quot;</code><br> <code>PANTS_BLACK_INTERPRETER_CONSTRAINTS</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <pre>[ "CPython&gt;=3.6.2" ]</pre></span>

<br>

Python interpreter constraints for this tool.

</div> <br>

<div style="color: purple"> <h3><code>lockfile</code></h3> <code>--black-lockfile=&lt;str&gt;</code><br> <code>PANTS_BLACK_LOCKFILE</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>&lt;default&gt;</code></span>

<br>

Path to a lockfile used for installing the tool.

Set to the string `<default>` to use a lockfile provided by Pants, so long as you have not changed the `--version` and `--extra-requirements` options, and the tool's interpreter constraints are compatible with the default. Pants will error or warn if the lockfile is not compatible (controlled by `[python].invalid_lockfile_behavior`). See https://github.com/pantsbuild/pants/blob/release_2.10.1rc1/src/python/pants/backend/python/lint/black/lockfile.txt for the default lockfile contents.

Set to the string `<none>` to opt out of using a lockfile. We do not recommend this, though, as lockfiles are essential for reproducible builds.

To use a custom lockfile, set this option to a file path relative to the build root, then run `./pants generate-lockfiles --resolve=black`.

Lockfile generation currently does not wire up the `[python-repos]` options. If lockfile generation fails, you can manually generate a lockfile, such as by using pip-compile or `pip freeze`. Set this option to the path to your manually generated lockfile. When manually maintaining lockfiles, set `[python].invalid_lockfile_behavior = 'ignore'`.

</div> <br>

<div style="color: purple"> <h3><code>console_script</code></h3> <code>--black-console-script=&lt;str&gt;</code><br> <code>PANTS_BLACK_CONSOLE_SCRIPT</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>black</code></span>

<br>

The console script for the tool. Using this option is generally preferable to (and mutually exclusive with) specifying an --entry-point since console script names have a higher expectation of staying stable across releases of the tool. Usually, you will not want to change this from the default.

</div> <br>

<div style="color: purple"> <h3><code>entry_point</code></h3> <code>--black-entry-point=&lt;str&gt;</code><br> <code>PANTS_BLACK_ENTRY_POINT</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>None</code></span>

<br>

The entry point for the tool. Generally you only want to use this option if the tool does not offer a --console-script (which this option is mutually exclusive with). Usually, you will not want to change this from the default.

</div> <br>

<div style="color: purple"> <h3><code>config</code></h3> <code>--black-config=&lt;file_option&gt;</code><br> <code>PANTS_BLACK_CONFIG</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>None</code></span>

<br>

Path to a TOML config file understood by Black (https://github.com/psf/black#configuration-format).

Setting this option will disable `[black].config_discovery`. Use this option if the config is located in a non-standard location.

</div> <br>

<div style="color: purple"> <h3><code>config_discovery</code></h3> <code>--[no-]black-config-discovery</code><br> <code>PANTS_BLACK_CONFIG_DISCOVERY</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>True</code></span>

<br>

If true, Pants will include any relevant pyproject.toml config files during runs.

Use `[black].config` instead if your config is in a non-standard location.

</div> <br>

## Deprecated options

None