Options:
-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
piping source on standard input).
-S, --skip-string-normalization
Don't normalize string quotes or prefixes.
- -N, --skip-numeric-underscore-normalization
- Don't normalize underscores in numeric
- literals.
--check Don't write the files back, just return the
status. Return code 0 means nothing would
change. Return code 1 means some files
```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
)
```
```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:
...
template: str,
*variables,
file: os.PathLike,
+ engine: str,
+ header: bool = True,
debug: bool = False,
):
"""Applies `variables` to the `template` and writes to `file`."""
*Black* standardizes most numeric literals to use lowercase letters for the
syntactic parts and uppercase letters for the digits themselves: `0xAB`
instead of `0XAB` and `1e10` instead of `1E10`. Python 2 long literals are
-styled as `2L` instead of `2l` to avoid confusion between `l` and `1`. In
-Python 3.6+, *Black* adds underscores to long numeric literals to aid
-readability: `100000000` becomes `100_000_000`.
+styled as `2L` instead of `2l` to avoid confusion between `l` and `1`.
-For regions where numerals are grouped differently (like [India](https://en.wikipedia.org/wiki/Indian_numbering_system)
-and [China](https://en.wikipedia.org/wiki/Chinese_numerals#Whole_numbers)),
-the `-N` or `--skip-numeric-underscore-normalization` command line option
-makes *Black* preserve underscores in numeric literals.
### Line breaks & binary operators
```toml
[tool.black]
line-length = 88
-py36 = true
+target_version = ['py37']
include = '\.pyi?$'
exclude = '''
Use [proofit404/blacken](https://github.com/proofit404/blacken).
-### PyCharm
+### PyCharm/IntelliJ IDEA
1. Install `black`.
%LocalAppData%\Programs\Python\Python36-32\Scripts\black.exe # possible location
```
-3. Open External tools in PyCharm with `File -> Settings -> Tools -> External Tools`.
+3. Open External tools in PyCharm/IntelliJ IDEA
+
+ On macOS:
+
+```PyCharm -> Preferences -> Tools -> External Tools```
+
+ On Windows / Linux / BSD:
+
+```File -> Settings -> Tools -> External Tools```
4. Click the + icon to add a new external tool with the following values:
- Name: Black
- Description: Black is the uncompromising Python code formatter.
- Program: <install_location_from_step_2>
- - Arguments: `$FilePath$`
+ - Arguments: `"$FilePath$"`
5. Format the currently opened file by selecting `Tools -> External Tools -> black`.
- - Alternatively, you can set a keyboard shortcut by navigating to `Preferences -> Keymap -> External Tools -> External Tools - Black`.
+ - Alternatively, you can set a keyboard shortcut by navigating to `Preferences or Settings -> Keymap -> External Tools -> External Tools - Black`.
6. Optionally, run Black on every file save:
1. Make sure you have the [File Watcher](https://plugins.jetbrains.com/plugin/7177-file-watchers) plugin installed.
- 2. Go to `Preferences -> Tools -> File Watchers` and click `+` to add a new watcher:
+ 2. Go to `Preferences or Settings -> Tools -> File Watchers` and click `+` to add a new watcher:
- Name: Black
- File type: Python
- Scope: Project Files
- Program: <install_location_from_step_2>
- Arguments: `$FilePath$`
- - Output paths to refresh: `$FilePathRelativeToProjectRoot$`
+ - Output paths to refresh: `$FilePath$`
- Working directory: `$ProjectFileDir$`
+ - Uncheck "Auto-save edited files to trigger the watcher"
### Vim
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
- `X-Skip-String-Normalization`: corresponds to the `--skip-string-normalization`
command line flag. If present and its value is not the empty string, no string
normalization will be performed.
- - `X-Skip-Numeric-Underscore-Normalization`: corresponds to the
- `--skip-numeric-underscore-normalization` command line flag.
- `X-Fast-Or-Safe`: if set to `fast`, `blackd` will act as *Black* does when
passed the `--fast` command line flag.
- `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.
## Change Log
-### 18.11b0
+### 19.3b1
+
+* fix bug that led *Black* format some code with a line length target of 1
+ (#762)
+
+### 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
* [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)
* [Jonas Obrist](mailto:ojiidotch@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)
projects / etc / vim.git / blobdiff