key. My recommendation here is to keep using whatever is faster to type
and let *Black* handle the transformation.
+### Line Breaks & Binary Operators
+
+*Black* will break a line before a binary operator when splitting a block
+of code over multiple lines. This is so that *Black* is compliant with the
+recent changes in the [PEP 8](https://www.python.org/dev/peps/pep-0008/#should-a-line-break-before-or-after-a-binary-operator)
+style guide, which emphasizes that this approach improves readability.
+
+This behaviour may raise ``W503 line break before binary operator`` warnings in
+style guide enforcement tools like Flake8. Since ``W503`` is not PEP 8 compliant,
+you should tell Flake8 to ignore these warnings.
+
+### Parentheses
+
+Some parentheses are optional in the Python grammar. Any expression can
+be wrapped in a pair of parentheses to form an atom. There are a few
+interesting cases:
+
+- `if (...):`
+- `while (...):`
+- `for (...) in (...):`
+- `assert (...), (...)`
+- `from X import (...)`
+
+In those cases, parentheses are removed when the entire statement fits
+in one line, or if the inner expression doesn't have any delimiters to
+further split on. Otherwise, the parentheses are always added.
+
## Editor integration
Use [proofit404/blacken](https://github.com/proofit404/blacken).
+### PyCharm
+
+1. Install `black`.
+
+ $ pip install black
+
+2. Locate your `black` installation folder.
+
+ On MacOS / Linux / BSD:
+
+ $ which black
+ /usr/local/bin/black # possible location
+
+ On Windows:
+
+ $ where black
+ %LocalAppData%\Programs\Python\Python36-32\Scripts\black.exe # possible location
+
+3. Open External tools in PyCharm with `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>
+ - 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`.
+
+
### Vim
Commands and shortcuts:
## Change Log
+### 18.4a3
+
+* generalized star expression handling, including double stars; this
+ fixes multiplication making expressions "unsafe" for trailing commas (#132)
+
+### 18.4a2
+
+* fixed parsing of unaligned standalone comments (#99, #112)
+
+* fixed placement of dictionary unpacking inside dictionary literals (#111)
+
+* Vim plugin now works on Windows, too
+
+* fixed unstable formatting when encountering unnecessarily escaped quotes
+ in a string (#120)
+
+
### 18.4a1
* added `--quiet` (#78)
+* added automatic parentheses management (#4)
+
* added [pre-commit](https://pre-commit.com) integration (#103, #104)
* fixed reporting on `--check` with multiple files (#101, #102)
* fixed removing backslash escapes from raw strings (#100, #105)
+
### 18.4a0
* added `--diff` (#87)
Glued together by [Łukasz Langa](mailto:lukasz@langa.pl).
-Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com)
-and [Carl Meyer](mailto:carl@oddbird.net).
+Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com),
+[Carl Meyer](mailto:carl@oddbird.net),
+[Mika Naylor](mailto:mail@autophagy.io), and
+[Zsolt Dollenstein](mailto:zsol.zsol@gmail.com).
Multiple contributions by:
+* [Anthony Sottile](mailto:asottile@umich.edu)
* [Artem Malyshev](mailto:proofit404@gmail.com)
* [Daniel M. Capella](mailto:polycitizen@gmail.com)
* [Eli Treuherz](mailto:eli.treuherz@cgi.com)
* Hugo van Kemenade
* [Ivan Katanić](mailto:ivan.katanic@gmail.com)
-* [Mika Naylor](mailto:mail@autophagy.io)
* [Osaetin Daniel](mailto:osaetindaniel@gmail.com)
-* [Zsolt Dollenstein](mailto:zsol.zsol@gmail.com)
projects / etc / vim.git / blobdiff