-
+[](https://black.readthedocs.io/en/stable/)
<h2 align="center">The Uncompromising Code Formatter</h2>
<p align="center">
<a href="https://github.com/psf/black/actions"><img alt="Actions Status" src="https://github.com/psf/black/workflows/Test/badge.svg"></a>
-<a href="https://github.com/psf/black/actions"><img alt="Actions Status" src="https://github.com/psf/black/workflows/Primer/badge.svg"></a>
<a href="https://black.readthedocs.io/en/stable/?badge=stable"><img alt="Documentation Status" src="https://readthedocs.org/projects/black/badge/?version=stable"></a>
-<a href="https://coveralls.io/github/psf/black?branch=master"><img alt="Coverage Status" src="https://coveralls.io/repos/github/psf/black/badge.svg?branch=master"></a>
-<a href="https://github.com/psf/black/blob/ma
ster/LICENSE"><img alt="License: MIT" src="https://black.readthedocs.io/en/stable/_static/license.svg"></a>
+<a href="https://coveralls.io/github/psf/black?branch=main"><img alt="Coverage Status" src="https://coveralls.io/repos/github/psf/black/badge.svg?branch=main"></a>
+<a href="https://github.com/psf/black/blob/ma
in/LICENSE"><img alt="License: MIT" src="https://black.readthedocs.io/en/stable/_static/license.svg"></a>
<a href="https://pypi.org/project/black/"><img alt="PyPI" src="https://img.shields.io/pypi/v/black"></a>
<a href="https://pepy.tech/project/black"><img alt="Downloads" src="https://pepy.tech/badge/black"></a>
<a href="https://anaconda.org/conda-forge/black/"><img alt="conda-forge" src="https://img.shields.io/conda/dn/conda-forge/black.svg?label=conda-forge"></a>
### Installation
-_Black_ can be installed by running `pip install black`. It requires Python 3.6.2+ to
-run. If you want to format Python 2 code as well, install with
-`pip install black[python2]`.
+_Black_ can be installed by running `pip install black`. It requires Python 3.7+ to run.
+If you want to format Jupyter Notebooks, install with `pip install "black[jupyter]"`.
If you can't wait for the latest _hotness_ and want to install from GitHub, use:
-`pip install git+git://github.com/psf/black`
+`pip install git+https://github.com/psf/black`
### Usage
- [Usage and Configuration](https://black.readthedocs.io/en/stable/usage_and_configuration/index.html)
-### NOTE: This is a beta product
-
_Black_ is already [successfully used](https://github.com/psf/black#used-by) by many
-projects, small and big. Black has a comprehensive test suite, with efficient parallel
-tests, and our own auto formatting and parallel Continuous Integration runner. However,
-_Black_ is still beta. Things will probably be wonky for a while. This is made explicit
-by the "Beta" trove classifier, as well as by the "b" in the version number. What this
-means for you is that **until the formatter becomes stable, you should expect some
-formatting to change in the future**. That being said, no drastic stylistic changes are
-planned, mostly responses to bug reports.
+projects, small and big. _Black_ has a comprehensive test suite, with efficient parallel
+tests, and our own auto formatting and parallel Continuous Integration runner. Now that
+we have become stable, you should not expect large formatting changes in the future.
+Stylistic changes will mostly be responses to bug reports and support for new Python
+syntax. For more information please refer to the
+[The Black Code Style](https://black.readthedocs.io/en/stable/the_black_code_style/index.html).
Also, as a safety measure which slows down processing, _Black_ will check that the
reformatted code still produces a valid AST that is effectively equivalent to the
_Black_ is a PEP 8 compliant opinionated formatter. _Black_ reformats entire files in
place. Style configuration options are deliberately limited and rarely added. It doesn't
-take previous formatting into account (see [Pragmatism](#pragmatism) for exceptions).
+take previous formatting into account (see
+[Pragmatism](https://black.readthedocs.io/en/stable/the_black_code_style/current_style.html#pragmatism)
+for exceptions).
Our documentation covers the current _Black_ code style, but planned changes to it are
also documented. They're both worth taking a look:
- [The _Black_ Code Style: Current style](https://black.readthedocs.io/en/stable/the_black_code_style/current_style.html)
- [The _Black_ Code Style: Future style](https://black.readthedocs.io/en/stable/the_black_code_style/future_style.html)
+Changes to the _Black_ code style are bound by the Stability Policy:
+
+- [The _Black_ Code Style: Stability Policy](https://black.readthedocs.io/en/stable/the_black_code_style/index.html#stability-policy)
+
Please refer to this document before submitting an issue. What seems like a bug might be
intended behaviour.
## Used by
The following notable open-source projects trust _Black_ with enforcing a consistent
-code style: pytest, tox, Pyramid, Django Channels, Hypothesis, attrs, SQLAlchemy,
-Poetry, PyPA applications (Warehouse, Bandersnatch, Pipenv, virtualenv), pandas, Pillow,
-every Datadog Agent Integration, Home Assistant, Zulip.
+code style: pytest, tox, Pyramid, Django, Django Channels, Hypothesis, attrs,
+SQLAlchemy, Poetry, PyPA applications (Warehouse, Bandersnatch, Pipenv, virtualenv),
+pandas, Pillow, Twisted, LocalStack, every Datadog Agent Integration, Home Assistant,
+Zulip, Kedro, OpenOA, FLORIS, ORBIT, WOMBAT, and many more.
-The following organizations use _Black_: Facebook, Dropbox, Mozilla, Quora.
+The following organizations use _Black_: Facebook, Dropbox, KeepTruckin, Mozilla, Quora,
+Duolingo, QuantumBlack, Tesla, Archer Aviation.
Are we missing anyone? Let us know.
## Testimonials
+**Mike Bayer**, [author of `SQLAlchemy`](https://www.sqlalchemy.org/):
+
+> I can't think of any single tool in my entire programming career that has given me a
+> bigger productivity increase by its introduction. I can now do refactorings in about
+> 1% of the keystrokes that it would have taken me previously when we had no way for
+> code to format itself.
+
**Dusty Phillips**,
[writer](https://smile.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=dusty+phillips):
> At least the name is good.
-**Kenneth Reitz**, creator of [`requests`](http://python-requests.org/) and
-[`pipenv`](https://readthedocs.org/projects/pipenv/):
+**Kenneth Reitz**, creator of [`requests`](https://requests.readthedocs.io/en/latest/)
+and [`pipenv`](https://readthedocs.org/projects/pipenv/):
> This vastly improves the formatting of our code. Thanks a ton!
developers:
- [Contributing documentation](https://black.readthedocs.io/en/latest/contributing/index.html)
-- [IRC channel on Freenode](https://webchat.freenode.net/?channels=%23blackformatter)
+- [Chat on Discord](https://discord.gg/RtVdv86PrH)
## Change log
projects / etc / vim.git / blobdiff