-l, --line-length INTEGER How many characters per line to allow.
[default: 88]
- -t, --target-version [py27|py33|py34|py35|py36|py37|py38]
+ -t, --target-version [py27|py33|py34|py35|py36|py37|py38|py39]
Python versions that should be supported by
Black's output. [default: per-file auto-
detection]
matching this regex will be excluded even
when they are passed explicitly as arguments.
+ --stdin-filename TEXT The name of the file when passing it through
+ stdin. Useful to make sure Black will respect
+ --force-exclude option on some editors that
+ rely on using stdin.
+
-q, --quiet Don't emit non-error messages to stderr.
Errors are still emitted; silence those with
2>/dev/null.
should be configured to neither warn about nor overwrite _Black_'s changes.
Actual details on _Black_ compatible configurations for various tools can be found in
-[compatible_configs](https://github.com/psf/black/blob/master/docs/compatible_configs.md).
+[compatible_configs](https://github.com/psf/black/blob/master/docs/compatible_configs.md#black-compatible-configurations).
### Migrating your code style without ruining git blame
### NOTE: This is a beta product
-_Black_ is already [successfully used](#used-by) by many projects, small and big. It
-also sports a decent test suite. However, it is still very new. 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.
+_Black_ is already [successfully used](https://github.com/psf/black#used-by) by many
+projects, small and big. It also sports a decent test suite. However, it is still very
+new. 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.
Also, as a temporary safety measure, _Black_ will check that the reformatted code still
produces a valid AST that is equivalent to the original. This slows it down. If you're
```yaml
repos:
- repo: https://github.com/psf/black
- rev: 19.10b0 # Replace by any tag/version: https://github.com/psf/black/tags
+ rev: 20.8b1 # Replace by any tag/version: https://github.com/psf/black/tags
hooks:
- id: black
language_version: python3 # Should be a command that runs python3.6+
- uses: actions/checkout@v2
- uses: actions/setup-python@v2
- uses: psf/black@stable
+ with:
+ black_args: ". --check"
```
+### Inputs
+
+#### `black_args`
+
+**optional**: Black input arguments. Defaults to `. --check --diff`.
+
## Ignoring unmodified files
_Black_ remembers files it has already formatted, unless the `--diff` flag is used or
- [Gregory P. Smith](mailto:greg@krypto.org)
- Gustavo Camargo
- hauntsaninja
+- [Hadi Alqattan](mailto:alqattanhadizaki@gmail.com)
- [Heaford](mailto:dan@heaford.com)
- [Hugo Barrera](mailto::hugo@barrera.io)
- Hugo van Kemenade
- [Paul Ganssle](mailto:p.ganssle@gmail.com)
- [Paul Meinhardt](mailto:mnhrdt@gmail.com)
- [Peter Bengtsson](mailto:mail@peterbe.com)
+- [Peter Grayson](mailto:pete@jpgrayson.net)
- [Peter Stensmyr](mailto:peter.stensmyr@gmail.com)
- pmacosta
- [Quentin Pradet](mailto:quentin@pradet.me)