-
+
<h2 align="center">The Uncompromising Code Formatter</h2>
<p align="center">
-<a href="https://travis-ci.org/python/black"><img alt="Build Status" src="https://travis-ci.org/python/black.svg?branch=master"></a>
+<a href="https://travis-ci.com/psf/black"><img alt="Build Status" src="https://travis-ci.com/psf/black.svg?branch=master"></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/python/black?branch=master"><img alt="Coverage Status" src="https://coveralls.io/repos/github/python/black/badge.svg?branch=master"></a>
-<a href="https://github.com/p
ython/black/blob/master/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=master"><img alt="Coverage Status" src="https://coveralls.io/repos/github/psf/black/badge.svg?branch=master"></a>
+<a href="https://github.com/p
sf/black/blob/master/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://black.readthedocs.io/en/stable/_static/pypi.svg"></a>
<a href="https://pepy.tech/project/black"><img alt="Downloads" src="https://pepy.tech/badge/black"></a>
-<a href="https://github.com/p
ython/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
+<a href="https://github.com/p
sf/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
</p>
> “Any color you like.”
```py3
# in:
-l = [1,
+j = [1,
2,
3,
]
# out:
-l = [1, 2, 3]
+j = [1, 2, 3]
```
If not, *Black* will look at the contents of the first outer matching
max-line-length = 80
...
select = C,E,F,W,B,B950
-ignore = E501
+ignore = E501,W503,E203
```
You'll find *Black*'s own .flake8 config file is configured like this.
-If you're curious about the reasoning behind B950,
+If you're curious about the reasoning behind B950,
[Bugbear's documentation](https://github.com/PyCQA/flake8-bugbear#opinionated-warnings)
explains it. The tl;dr is "it's like highway speed limits, we won't
bother you if you overdo it by a few km/h".
Having one kind of quotes everywhere reduces reader distraction.
It will also enable a future version of *Black* to merge consecutive
string literals that ended up on the same line (see
-[#26](https://github.com/python/black/issues/26) for details).
+[#26](https://github.com/psf/black/issues/26) for details).
Why settle on double quotes? They anticipate apostrophes in English
text. They match the docstring standard described in [PEP 257](https://www.python.org/dev/peps/pep-0257/#what-is-a-docstring).
-### Wing IDE
+### Wing IDE
Wing supports black via the OS Commands tool, as explained in the Wing documentation on [pep8 formatting](https://wingware.com/doc/edit/pep8). The detailed procedure is:
- click on **+** in **OS Commands** -> New: Command line..
- Title: black
- Command Line: black %s
- - I/O Encoding: Use Default
+ - I/O Encoding: Use Default
- Key Binding: F1
- [x] Raise OS Commands when executed
- [x] Auto-save files before execution
To install with [vim-plug](https://github.com/junegunn/vim-plug):
```
-Plug 'python/black'
+Plug 'psf/black'
```
or with [Vundle](https://github.com/VundleVim/Vundle.vim):
```
-Plugin 'python/black'
+Plugin 'psf/black'
+```
+
+or you can copy the plugin from [plugin/black.vim](https://github.com/psf/black/tree/master/plugin/black.vim).
+
+```
+mkdir -p ~/.vim/pack/python/start/black/plugin
+curl https://raw.githubusercontent.com/psf/black/master/plugin/black.vim -o ~/.vim/pack/python/start/black/plugin/black.vim
```
-or you can copy the plugin from [plugin/black.vim](https://github.com/python/black/tree/master/plugin/black.vim).
Let me know if this requires any changes to work with Vim 8's builtin
`packadd`, or Pathogen, and so on.
autocmd BufWritePre *.py execute ':Black'
```
+To run *Black* on a key press (e.g. F9 below), add this:
+
+```
+nnoremap <F9> :Black<CR>
+```
+
**How to get Vim with Python 3.6?**
On Ubuntu 17.10 Vim comes with Python 3.6 by default.
On macOS with Homebrew run: `brew install vim --with-python3`.
-h, --help Show this message and exit.
```
+There is no official blackd client tool (yet!). You can test that blackd is
+working using `curl`:
+
+```
+blackd --bind-port 9090 & # or let blackd choose a port
+curl -s -XPOST "localhost:9090" -d "print('valid')"
+```
+
### Protocol
`blackd` only accepts `POST` requests at the `/` path. The body of the request
- `HTTP 500`: If there was any kind of error while trying to format the input.
The response body contains a textual representation of the error.
+The response headers include a `X-Black-Version` header containing the version
+of *Black*.
+
## Version control integration
Use [pre-commit](https://pre-commit.com/). Once you [have it
`.pre-commit-config.yaml` in your repository:
```yaml
repos:
-- repo: https://github.com/python/black
+- repo: https://github.com/psf/black
rev: stable
hooks:
- id: black
Avoid using `args` in the hook. Instead, store necessary configuration
in `pyproject.toml` so that editors and command-line usage of Black all
-behave consistently for your project. See *Black*'s own `pyproject.toml`
+behave consistently for your project. See *Black*'s own [pyproject.toml](/pyproject.toml)
for an example.
If you're already using Python 3.7, switch the `language_version`
`file-mode` is an int flag that determines whether the file was formatted as 3.6+ only,
as .pyi, and whether string normalization was omitted.
+To override the location of these files on macOS or Linux, set the environment variable
+`XDG_CACHE_HOME` to your preferred location. For example, if you want to put the cache in
+the directory you're running *Black* from, set `XDG_CACHE_HOME=.cache`. *Black* will then
+write the above files to `.cache/black/<version>/`.
## 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, Pipenv, virtualenv).
+attrs, SQLAlchemy, Poetry, PyPA applications (Warehouse, Pipenv, virtualenv),
+pandas, Pillow, every Datadog Agent Integration.
Are we missing anyone? Let us know.
Use the badge in your project's README.md:
```markdown
-[](https://github.com/python/black)
+[](https://github.com/psf/black)
```
Using the badge in README.rst:
```
.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
- :target: https://github.com/python/black
+ :target: https://github.com/psf/black
```
-Looks like this: [](https://github.com/python/black)
+Looks like this: [](https://github.com/psf/black)
## License
## Change Log
-### 19.5b0
+### unreleased
-* don't crash when run on a Windows machine with more than 61 cores (#838)
+* added `black -c` as a way to format code passed from the command line
+ (#761)
-* remove unnecessary parentheses around `yield` expressions (#834)
+* --safe now works with Python 2 code (#840)
-* add parentheses around long tuples in unpacking assignments (#832)
+* fixed grammar selection for Python 2-specific code (#765)
-* don't produce invalid code for `from` ... `import` blocks with comments
+* fixed feature detection for trailing commas in function definitions
+ and call sites (#763)
+
+* *Black* can now format async generators (#593)
+
+* *Black* no longer crashes on Windows machines with more than 61 cores
+ (#838)
+
+* *Black* no longer crashes on standalone comments prepended with
+ a backslash (#767)
+
+* *Black* no longer crashes on `from` ... `import` blocks with comments
(#829)
-* fix grammar selection (#765)
+* removed unnecessary parentheses around `yield` expressions (#834)
-* fix feature detection for trailing commas in function definitions and
- call sites (#763)
+* added parentheses around long tuples in unpacking assignments (#832)
-* add `black -c` as a way to format code passed from the command line (#761)
+* fixed bug that led *Black* format some code with a line length target
+ of 1 (#762)
-* fix bug that led *Black* format some code with a line length target of 1
- (#762)
+* *Black* no longer introduces quotes in f-string subexpressions on string
+ boundaries (#863)
-* --safe now works with Python 2 code (#840)
+* if *Black* puts parenthesis around a single expression, it moves comments
+ to the wrapped expression instead of after the brackets (#872)
+
+* *Black* is now able to format Python code that uses assignment expressions
+ (`:=` as described in PEP-572) (#935)
+
+* *Black* is now able to format Python code that uses positional-only
+ arguments (`/` as described in PEP-570) (#946)
+
+* `blackd` now returns the version of *Black* in the response headers (#1013)
-* *Black* no longer crashes on standalone comments prepended with
- a backslash (#767)
### 19.3b0
* `blackd` now supports CORS (#622)
+
### 18.9b0
* numeric literals are now formatted by *Black* (#452, #461, #464, #469):
projects / etc / vim.git / blobdiff