X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/a1fd7b26e75ab6e98fbb46770f9597bdf0958c51..3bfb66971f03da39ae1f4c98c30d55e60f63d33b:/README.md diff --git a/README.md b/README.md index 7f9b1d0..76ae9cf 100644 --- a/README.md +++ b/README.md @@ -1,14 +1,14 @@ -![Black Logo](https://raw.githubusercontent.com/ambv/black/master/docs/_static/logo2-readme.png) +![Black Logo](https://raw.githubusercontent.com/psf/black/master/docs/_static/logo2-readme.png)

The Uncompromising Code Formatter

-Build Status +Build Status Documentation Status -Coverage Status -License: MIT +Coverage Status +License: MIT PyPI Downloads -Code style: black +Code style: black

> “Any color you like.” @@ -28,6 +28,7 @@ content instead. possible. Try it out now using the [Black Playground](https://black.now.sh). +Watch the [PyCon 2019 talk](https://youtu.be/esZLCuWs_2Y) to learn more. --- @@ -38,6 +39,7 @@ Try it out now using the [Black Playground](https://black.now.sh). **[blackd](#blackd)** | **[Version control integration](#version-control-integration)** | **[Ignoring unmodified files](#ignoring-unmodified-files)** | +**[Used by](#used-by)** | **[Testimonials](#testimonials)** | **[Show your style](#show-your-style)** | **[Contributing](#contributing-to-black)** | @@ -71,16 +73,18 @@ black {source_file_or_directory} black [OPTIONS] [SRC]... Options: + -c, --code TEXT Format the code passed in as a string. -l, --line-length INTEGER How many characters per line to allow. [default: 88] - -t, --target-version [pypy35|cpy27|cpy33|cpy34|cpy35|cpy36|cpy37|cpy38] + -t, --target-version [py27|py33|py34|py35|py36|py37|py38] Python versions that should be supported by Black's output. [default: per-file auto- detection] --py36 Allow using Python 3.6-only syntax on all input files. This will put trailing commas in function signatures and calls also after - *args and **kwargs. [default: per-file + *args and **kwargs. Deprecated; use + --target-version instead. [default: per-file auto-detection] --pyi Format all input files like typing stubs regardless of file extension (useful when @@ -135,7 +139,7 @@ Options: ### NOTE: This is a beta product -*Black* is already successfully used by several projects, small and big. +*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. @@ -174,14 +178,14 @@ great. ```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 @@ -189,12 +193,12 @@ brackets and put that in a separate indented line. ```py3 # in: -TracebackException.from_exception(exc, limit, lookup_lines, capture_locals) +ImportantClass.important_method(exc, limit, lookup_lines, capture_locals, extra_argument) # out: -TracebackException.from_exception( - exc, limit, lookup_lines, capture_locals +ImportantClass.important_method( + exc, limit, lookup_lines, capture_locals, extra_argument ) ``` @@ -208,7 +212,7 @@ separate lines. ```py3 # in: -def very_important_function(template: str, *variables, file: os.PathLike, debug: bool = False): +def very_important_function(template: str, *variables, file: os.PathLike, engine: str, header: bool = True, debug: bool = False): """Applies `variables` to the `template` and writes to `file`.""" with open(file, 'w') as f: ... @@ -219,6 +223,8 @@ def very_important_function( template: str, *variables, file: os.PathLike, + engine: str, + header: bool = True, debug: bool = False, ): """Applies `variables` to the `template` and writes to `file`.""" @@ -287,11 +293,11 @@ you are probably already using. You'd do it like this: 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". @@ -367,7 +373,7 @@ The main reason to standardize on a single form of quotes is aesthetics. 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/ambv/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). @@ -574,7 +580,7 @@ to denote a significant space character. ```toml [tool.black] line-length = 88 -py36 = true +target-version = ['py37'] include = '\.pyi?$' exclude = ''' @@ -614,10 +620,11 @@ configuration from different levels of the file hierarchy. ### Emacs -Use [proofit404/blacken](https://github.com/proofit404/blacken). +Use [proofit404/blacken](https://github.com/proofit404/blacken) or +[Elpy](https://github.com/jorgenschaefer/elpy). -### PyCharm +### PyCharm/IntelliJ IDEA 1. Install `black`. @@ -641,30 +648,70 @@ $ where black %LocalAppData%\Programs\Python\Python36-32\Scripts\black.exe # possible location ``` -3. Open External tools in PyCharm with `File -> Settings -> Tools -> External Tools`. +3. Open External tools in PyCharm/IntelliJ IDEA + + On macOS: + +```PyCharm -> Preferences -> Tools -> External Tools``` + + On Windows / Linux / BSD: + +```File -> Settings -> Tools -> External Tools``` 4. Click the + icon to add a new external tool with the following values: - Name: Black - Description: Black is the uncompromising Python code formatter. - Program: - - Arguments: `$FilePath$` + - Arguments: `"$FilePath$"` 5. Format the currently opened file by selecting `Tools -> External Tools -> black`. - - Alternatively, you can set a keyboard shortcut by navigating to `Preferences -> Keymap -> External Tools -> External Tools - Black`. + - Alternatively, you can set a keyboard shortcut by navigating to `Preferences or Settings -> Keymap -> External Tools -> External Tools - Black`. -6. Optionally, run Black on every file save: +6. Optionally, run *Black* on every file save: 1. Make sure you have the [File Watcher](https://plugins.jetbrains.com/plugin/7177-file-watchers) plugin installed. - 2. Go to `Preferences -> Tools -> File Watchers` and click `+` to add a new watcher: + 2. Go to `Preferences or Settings -> Tools -> File Watchers` and click `+` to add a new watcher: - Name: Black - File type: Python - Scope: Project Files - Program: - Arguments: `$FilePath$` - - Output paths to refresh: `$FilePathRelativeToProjectRoot$` + - Output paths to refresh: `$FilePath$` - Working directory: `$ProjectFileDir$` - Uncheck "Auto-save edited files to trigger the watcher" + + +### 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: + +1. Install `black`. + +```console +$ pip install black +``` + +2. Make sure it runs from the command line, e.g. + +```console +$ black --help +``` + +3. In Wing IDE, activate the **OS Commands** panel and define the command **black** to execute black on the currently selected file: + +- Use the Tools -> OS Commands menu selection +- click on **+** in **OS Commands** -> New: Command line.. + - Title: black + - Command Line: black %s + - I/O Encoding: Use Default + - Key Binding: F1 + - [x] Raise OS Commands when executed + - [x] Auto-save files before execution + - [x] Line mode + +4. Select a file in the editor and press **F1** , or whatever key binding you selected in step 3, to reformat the file. + ### Vim Commands and shortcuts: @@ -683,16 +730,16 @@ Configuration: To install with [vim-plug](https://github.com/junegunn/vim-plug): ``` -Plug 'ambv/black' +Plug 'psf/black' ``` or with [Vundle](https://github.com/VundleVim/Vundle.vim): ``` -Plugin 'ambv/black' +Plugin 'psf/black' ``` -or you can copy the plugin from [plugin/black.vim](https://github.com/ambv/black/tree/master/plugin/black.vim). +or you can copy the plugin from [plugin/black.vim](https://github.com/psf/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. @@ -764,7 +811,7 @@ The formatted code will be returned on stdout (unless `--check` was passed). *Black* will still emit messages on stderr but that shouldn't affect your use case. -This can be used for example with PyCharm's [File Watchers](https://www.jetbrains.com/help/pycharm/file-watchers.html). +This can be used for example with PyCharm's or IntelliJ's [File Watchers](https://www.jetbrains.com/help/pycharm/file-watchers.html). ## blackd @@ -797,6 +844,14 @@ Options: -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 @@ -820,8 +875,8 @@ The headers controlling how code is formatted are: - `X-Python-Variant`: if set to `pyi`, `blackd` will act as *Black* does when passed the `--pyi` command line flag. Otherwise, its value must correspond to a Python version or a set of comma-separated Python versions, optionally - prefixed with `cpy` or `pypy`. For example, to request code that is compatible - with PyPy 3.5 and CPython 3.5, set the header to `pypy3.5,cpy3.5`. + prefixed with `py`. For example, to request code that is compatible + with Python 3.5 and 3.6, set the header to `py3.5,py3.6`. If any of these headers are set to invalid values, `blackd` returns a `HTTP 400` error response, mentioning the name of the problematic header in the message body. @@ -838,6 +893,9 @@ Apart from the above, `blackd` can produce the following response codes: - `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 @@ -845,7 +903,7 @@ installed](https://pre-commit.com/#install), add this to the `.pre-commit-config.yaml` in your repository: ```yaml repos: -- repo: https://github.com/ambv/black +- repo: https://github.com/psf/black rev: stable hooks: - id: black @@ -855,7 +913,7 @@ Then run `pre-commit install` and you're ready to go. 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` @@ -878,6 +936,20 @@ is: `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//`. + +## 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), +pandas, Pillow, every Datadog Agent Integration. + +Are we missing anyone? Let us know. + ## Testimonials @@ -905,16 +977,16 @@ and [`pipenv`](https://docs.pipenv.org/): Use the badge in your project's README.md: ```markdown -[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black) +[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](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/ambv/black + :target: https://github.com/psf/black ``` -Looks like this: [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black) +Looks like this: [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black) ## License @@ -940,12 +1012,77 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md). ## Change Log -### 19.2b0 +### unreleased + +* added `black -c` as a way to format code passed from the command line + (#761) + +* --safe now works with Python 2 code (#840) + +* fixed grammar selection for Python 2-specific code (#765) + +* 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) + +* removed unnecessary parentheses around `yield` expressions (#834) + +* added parentheses around long tuples in unpacking assignments (#832) + +* fixed 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) + +* if *Black* puts parenthesis around a single expression, it moves comments + to the wrapped expression instead of after the brackets (#872) -* *Black* no longer normalizes numeric literals to include `_` separators. +* *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) + + +### 19.3b0 * new option `--target-version` to control which Python versions - *Black*-formatted code should target + *Black*-formatted code should target (#618) + +* deprecated `--py36` (use `--target-version=py36` instead) (#724) + +* *Black* no longer normalizes numeric literals to include `_` separators (#696) + +* long `del` statements are now split into multiple lines (#698) + +* type comments are no longer mangled in function signatures + +* improved performance of formatting deeply nested data structures (#509) + +* *Black* now properly formats multiple files in parallel on + Windows (#632) + +* *Black* now creates cache files atomically which allows it to be used + in parallel pipelines (like `xargs -P8`) (#673) + +* *Black* now correctly indents comments in files that were previously + formatted with tabs (#262) + +* `blackd` now supports CORS (#622) + ### 18.9b0 @@ -1350,11 +1487,14 @@ Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com), Multiple contributions by: * [Anthony Sottile](mailto:asottile@umich.edu) * [Artem Malyshev](mailto:proofit404@gmail.com) +* [Benjamin Woodruff](mailto:github@benjam.info) * [Christian Heimes](mailto:christian@python.org) * [Daniel M. Capella](mailto:polycitizen@gmail.com) * [Eli Treuherz](mailto:eli@treuherz.com) +* hauntsaninja * Hugo van Kemenade * [Ivan Katanić](mailto:ivan.katanic@gmail.com) +* [Jason Fried](mailto:me@jasonfried.info) * [Jonas Obrist](mailto:ojiidotch@gmail.com) * [Luka Sterbic](mailto:luka.sterbic@gmail.com) * [Miguel Gaiowski](mailto:miggaiowski@gmail.com) @@ -1364,5 +1504,6 @@ Multiple contributions by: * [Peter Bengtsson](mailto:mail@peterbe.com) * [Stavros Korokithakis](mailto:hi@stavros.io) * [Sunil Kapil](mailto:snlkapil@gmail.com) +* [Utsav Shah](mailto:ukshah2@illinois.edu) * [Vishwas B Sharma](mailto:sharma.vishwas88@gmail.com) * [Chuck Wooters](mailto:chuck.wooters@microsoft.com)