Remove unnecessary if-statement in maybe_make_parens_invisible_in_atom (#964)

[etc/vim.git] / README.md

diff --git a/README.md b/README.md
index 2ce91bb26cb6854a0be40012666b3a3de2887459..0d535d9cc19f54c65dd9ca828e29bd726a38f0d1 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/psf/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.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://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/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/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/psf/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)** |


@@ -71,16 +73,18 @@ 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]
   -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
                                   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
                                   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
 
 
 ### 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.


@@ -219,8 +223,8 @@ def very_important_function(
     template: str,
     *variables,
     file: os.PathLike,
     template: str,
     *variables,
     file: os.PathLike,

-    engine: str, 
-    header: bool = True
+    engine: str,
+    header: bool = True,

     debug: bool = False,
 ):
     """Applies `variables` to the `template` and writes to `file`."""
     debug: bool = False,
 ):
     """Applies `variables` to the `template` and writes to `file`."""


@@ -289,7 +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.


@@ -369,7 +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/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).
 
 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).


@@ -576,7 +580,7 @@ to denote a significant space character.
 ```toml
 [tool.black]
 line-length = 88
 ```toml
 [tool.black]
 line-length = 88

-py36 = true
+target-version = ['py37']

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


@@ -616,10 +620,11 @@ 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
+### PyCharm/IntelliJ IDEA

 
 1. Install `black`.
 
 
 1. Install `black`.
 


@@ -643,30 +648,70 @@ $ where black
 %LocalAppData%\Programs\Python\Python36-32\Scripts\black.exe  # possible location
 ```
 
 %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: <install_location_from_step_2>
 
 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: <install_location_from_step_2>

-    - Arguments: `$FilePath$`
+    - Arguments: `"$FilePath$"`

 
 5. Format the currently opened file by selecting `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 -> 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.
 
     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: <install_location_from_step_2>
         - Arguments: `$FilePath$`
         - Name: Black
         - File type: Python
         - Scope: Project Files
         - Program: <install_location_from_step_2>
         - Arguments: `$FilePath$`

-        - Output paths to refresh: `$FilePathRelativeToProjectRoot$`
+        - Output paths to refresh: `$FilePath$`

         - 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:


@@ -685,16 +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 'psf/black'

 ```
 
 or with [Vundle](https://github.com/VundleVim/Vundle.vim):
 
 ```
 ```
 
 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.
 
 Let me know if this requires any changes to work with Vim 8's builtin
 `packadd`, or Pathogen, and so on.
 


@@ -766,7 +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.
 
 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
 
 
 ## blackd
 


@@ -799,6 +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


@@ -822,8 +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
  - `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.
 
 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.


@@ -847,7 +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/psf/black

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


@@ -857,7 +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`


@@ -880,6 +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
 


@@ -907,16 +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/psf/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/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
 
 
 ## License


@@ -942,12 +1009,75 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
 ## Change Log
 
 
 ## 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)
+
+
+### 19.3b0

 
 * new option `--target-version` to control which Python versions
 
 * 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
 
 
 ### 18.9b0
 


@@ -1352,11 +1482,14 @@ 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)
 * [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)
 * 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)


@@ -1366,5 +1499,6 @@ Multiple contributions by:
 * [Peter Bengtsson](mailto:mail@peterbe.com)
 * [Stavros Korokithakis](mailto:hi@stavros.io)
 * [Sunil Kapil](mailto:snlkapil@gmail.com)
 * [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)
 * [Vishwas B Sharma](mailto:sharma.vishwas88@gmail.com)
 * [Chuck Wooters](mailto:chuck.wooters@microsoft.com)