Force parentheses between unary op and binary power. (#909)

[etc/vim.git] / README.md

diff --git a/README.md b/README.md
index dbb7922d066b24c360ea65764a943d133022ac86..dc93b37c6d75376cf5cee320c3d13652a4ad299f 100644 (file)
--- 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/python/black/master/docs/_static/logo2-readme.png)

 <h2 align="center">The Uncompromising Code Formatter</h2>
 
 <p align="center">
 <h2 align="center">The Uncompromising Code Formatter</h2>
 
 <p align="center">

-<a href="https://travis-ci.org/ambv/black"><img alt="Build Status" src="https://travis-ci.org/ambv/black.svg?branch=master"></a>
+<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://black.readthedocs.io/en/stable/?badge=stable"><img alt="Documentation Status" src="https://readthedocs.org/projects/black/badge/?version=stable"></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/ambv/black?branch=master"><img alt="Coverage Status" src="https://coveralls.io/repos/github/ambv/black/badge.svg?branch=master"></a>
-<a href="https://github.com/ambv/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/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/python/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://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/ambv/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
+<a href="https://github.com/python/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>

 </p>
 
 > “Any color you like.”
 </p>
 
 > “Any color you like.”


@@ -28,6 +28,7 @@ content instead.
 possible.
 
 Try it out now using the [Black Playground](https://black.now.sh).
 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)** |
 **[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)** |
 **[Testimonials](#testimonials)** |
 **[Show your style](#show-your-style)** |
 **[Contributing](#contributing-to-black)** |


@@ -71,6 +73,7 @@ black {source_file_or_directory}
 black [OPTIONS] [SRC]...
 
 Options:
 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 [py27|py33|py34|py35|py36|py37|py38]
   -l, --line-length INTEGER       How many characters per line to allow.
                                   [default: 88]
   -t, --target-version [py27|py33|py34|py35|py36|py37|py38]


@@ -136,7 +139,7 @@ Options:
 
 ### NOTE: This is a beta product
 
 
 ### 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.
 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.


@@ -290,7 +293,7 @@ you are probably already using.  You'd do it like this:
 max-line-length = 80
 ...
 select = C,E,F,W,B,B950
 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.
 ```
 
 You'll find *Black*'s own .flake8 config file is configured like this.


@@ -370,7 +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
 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/python/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).
 
 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).


@@ -577,7 +580,7 @@ to denote a significant space character.
 ```toml
 [tool.black]
 line-length = 88
 ```toml
 [tool.black]
 line-length = 88

-target_version = ['py37']
+target-version = ['py37']

 include = '\.pyi?$'
 exclude = '''
 
 include = '\.pyi?$'
 exclude = '''
 


@@ -617,7 +620,8 @@ configuration from different levels of the file hierarchy.
 
 ### Emacs
 
 
 ### 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/IntelliJ IDEA
 
 
 ### PyCharm/IntelliJ IDEA


@@ -647,11 +651,11 @@ $ where black
 3. Open External tools in PyCharm/IntelliJ IDEA
 
   On macOS:
 3. Open External tools in PyCharm/IntelliJ IDEA
 
   On macOS:

-  
+

 ```PyCharm -> Preferences -> Tools -> External Tools```
 
   On Windows / Linux / BSD:
 ```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:
 ```File -> Settings -> Tools -> External Tools```
 
 4. Click the + icon to add a new external tool with the following values:


@@ -663,7 +667,7 @@ $ where black
 5. Format the currently opened file by selecting `Tools -> External Tools -> black`.
     - Alternatively, you can set a keyboard shortcut by navigating to `Preferences or Settings -> Keymap -> External Tools -> External Tools - Black`.
 
 5. Format the currently opened file by selecting `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 or Settings -> Tools -> File Watchers` and click `+` to add a new watcher:
 
     1. Make sure you have the [File Watcher](https://plugins.jetbrains.com/plugin/7177-file-watchers) plugin installed.
     2. Go to `Preferences or Settings -> Tools -> File Watchers` and click `+` to add a new watcher:


@@ -676,6 +680,38 @@ $ where black
         - Working directory: `$ProjectFileDir$`
        - Uncheck "Auto-save edited files to trigger the watcher"
 
         - 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:
 ### Vim
 
 Commands and shortcuts:


@@ -694,16 +730,16 @@ Configuration:
 To install with [vim-plug](https://github.com/junegunn/vim-plug):
 
 ```
 To install with [vim-plug](https://github.com/junegunn/vim-plug):
 
 ```

-Plug 'ambv/black'
+Plug 'python/black'

 ```
 
 or with [Vundle](https://github.com/VundleVim/Vundle.vim):
 
 ```
 ```
 
 or with [Vundle](https://github.com/VundleVim/Vundle.vim):
 
 ```

-Plugin 'ambv/black'
+Plugin 'python/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/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.
 
 Let me know if this requires any changes to work with Vim 8's builtin
 `packadd`, or Pathogen, and so on.
 


@@ -808,6 +844,14 @@ Options:
   -h, --help                      Show this message and exit.
 ```
 
   -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
 ### Protocol
 
 `blackd` only accepts `POST` requests at the `/` path. The body of the request


@@ -856,7 +900,7 @@ installed](https://pre-commit.com/#install), add this to the
 `.pre-commit-config.yaml` in your repository:
 ```yaml
 repos:
 `.pre-commit-config.yaml` in your repository:
 ```yaml
 repos:

--   repo: https://github.com/ambv/black
+-   repo: https://github.com/python/black

     rev: stable
     hooks:
     - id: black
     rev: stable
     hooks:
     - id: black


@@ -866,7 +910,7 @@ 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
 
 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`
 for an example.
 
 If you're already using Python 3.7, switch the `language_version`


@@ -889,6 +933,20 @@ 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.
 
 `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),
+every Datadog Agent Integration.
+
+Are we missing anyone?  Let us know.
+

 
 ## Testimonials
 
 
 ## Testimonials
 


@@ -916,16 +974,16 @@ and [`pipenv`](https://docs.pipenv.org/):
 Use the badge in your project's README.md:
 
 ```markdown
 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/python/black)

 ```
 
 Using the badge in README.rst:
 ```
 .. image:: https://img.shields.io/badge/code%20style-black-000000.svg
 ```
 
 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/python/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/python/black)

 
 
 ## License
 
 
 ## License


@@ -951,10 +1009,42 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
 ## Change Log
 
 
 ## Change Log
 

-### 19.3b1
+### 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)

 
 

-* fix bug that led *Black* format some code with a line length target of 1
-  (#762)

 
 ### 19.3b0
 
 
 ### 19.3b0
 


@@ -982,6 +1072,7 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
 * `blackd` now supports CORS (#622)
 
 
 * `blackd` now supports CORS (#622)
 

+

 ### 18.9b0
 
 * numeric literals are now formatted by *Black* (#452, #461, #464, #469):
 ### 18.9b0
 
 * numeric literals are now formatted by *Black* (#452, #461, #464, #469):


@@ -1385,12 +1476,14 @@ Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com),
 Multiple contributions by:
 * [Anthony Sottile](mailto:asottile@umich.edu)
 * [Artem Malyshev](mailto:proofit404@gmail.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)
 * [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)
 * [Jonas Obrist](mailto:ojiidotch@gmail.com)
 * [Luka Sterbic](mailto:luka.sterbic@gmail.com)
 * [Miguel Gaiowski](mailto:miggaiowski@gmail.com)