The uncompromising code formatter.
Project description
The Uncompromising Code Formatter
“Any color you like.”
Black is the uncompromising Python code formatter. By using it, you agree to cede
control over minutiae of hand-formatting. In return, Black gives you speed,
determinism, and freedom from pycodestyle
nagging about formatting. You will save time
and mental energy for more important matters.
Blackened code looks the same regardless of the project you're reading. Formatting becomes transparent after a while and you can focus on the content instead.
Black makes code review faster by producing the smallest diffs possible.
Try it out now using the Black Playground. Watch the PyCon 2019 talk to learn more.
Read the documentation on ReadTheDocs!
Installation and usage
Installation
Black can be installed by running pip install black
. It requires Python 3.6.2+ to
run. If you want to format Python 2 code as well, install with
pip install black[python2]
. If you want to format Jupyter Notebooks, install with
pip install black[jupyter]
.
If you can't wait for the latest hotness and want to install from GitHub, use:
pip install git+git://github.com/psf/black
Usage
To get started right away with sensible defaults:
black {source_file_or_directory}
You can run Black as a package if running it as a script doesn't work:
python -m black {source_file_or_directory}
Further information can be found in our docs:
NOTE: This is a beta product
Black is already successfully used by many projects, small and big. Black has a comprehensive test suite, with efficient parallel tests, and our own auto formatting and parallel Continuous Integration runner. However, Black is still beta. 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. What this means for you is that until the formatter becomes stable, you should expect some formatting to change in the future. That being said, no drastic stylistic changes are planned, mostly responses to bug reports.
Also, as a safety measure which slows down processing, Black will check that the
reformatted code still produces a valid AST that is effectively equivalent to the
original (see the
Pragmatism
section for details). If you're feeling confident, use --fast
.
The Black code style
Black is a PEP 8 compliant opinionated formatter. Black reformats entire files in place. Style configuration options are deliberately limited and rarely added. It doesn't take previous formatting into account (see Pragmatism for exceptions).
Our documentation covers the current Black code style, but planned changes to it are also documented. They're both worth taking a look:
Please refer to this document before submitting an issue. What seems like a bug might be intended behaviour.
Pragmatism
Early versions of Black used to be absolutist in some respects. They took after its initial author. This was fine at the time as it made the implementation simpler and there were not many users anyway. Not many edge cases were reported. As a mature tool, Black does make some exceptions to rules it otherwise holds.
Please refer to this document before submitting an issue just like with the document above. What seems like a bug might be intended behaviour.
Configuration
Black is able to read project-specific default values for its command line options
from a pyproject.toml
file. This is especially useful for specifying custom
--include
and --exclude
/--force-exclude
/--extend-exclude
patterns for your
project.
You can find more details in our documentation:
And if you're looking for more general configuration documentation:
Pro-tip: If you're asking yourself "Do I need to configure anything?" the answer is "No". Black is all about sensible defaults. Applying those defaults will have your code in compliance with many other Black formatted projects.
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, Bandersnatch, Pipenv, virtualenv), pandas, Pillow, Twisted, LocalStack, every Datadog Agent Integration, Home Assistant, Zulip, and many more.
The following organizations use Black: Facebook, Dropbox, Mozilla, Quora, Duolingo.
Are we missing anyone? Let us know.
Testimonials
Mike Bayer, author of SQLAlchemy
:
I can't think of any single tool in my entire programming career that has given me a bigger productivity increase by its introduction. I can now do refactorings in about 1% of the keystrokes that it would have taken me previously when we had no way for code to format itself.
Dusty Phillips, writer:
Black is opinionated so you don't have to be.
Hynek Schlawack, creator of attrs
, core developer of
Twisted and CPython:
An auto-formatter that doesn't suck is all I want for Xmas!
Carl Meyer, Django core developer:
At least the name is good.
Kenneth Reitz, creator of requests
and
pipenv
:
This vastly improves the formatting of our code. Thanks a ton!
Show your style
Use the badge in your project's README.md:
[![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/psf/black
License
MIT
Contributing
Welcome! Happy to see you willing to make the project better. You can get started by reading this:
You can also take a look at the rest of the contributing docs or talk with the developers:
Change log
The log has become rather long. It moved to its own file.
See CHANGES.
Authors
The author list is quite long nowadays, so it lives in its own file.
See AUTHORS.md
Code of Conduct
Everyone participating in the Black project, and in particular in the issue tracker, pull requests, and social media activity, is expected to treat other people with respect and more generally to follow the guidelines articulated in the Python Community Code of Conduct.
At the same time, humor is encouraged. In fact, basic familiarity with Monty Python's Flying Circus is expected. We are not savages.
And if you really need to slap somebody, do it with a fish while dancing.
Change Log
21.8b0
Black
- Add support for formatting Jupyter Notebook files (#2357)
- Move from
appdirs
dependency toplatformdirs
(#2375) - Present a more user-friendly error if .gitignore is invalid (#2414)
- The failsafe for accidentally added backslashes in f-string expressions has been hardened to handle more edge cases during quote normalization (#2437)
- Avoid changing a function return type annotation's type to a tuple by adding a trailing comma (#2384)
- Parsing support has been added for unparenthesized walruses in set literals, set comprehensions, and indices (#2447).
- Pin
setuptools-scm
build-time dependency version (#2457) - Exclude typing-extensions version 3.10.0.1 due to it being broken on Python 3.10 (#2460)
Blackd
- Replace sys.exit(-1) with raise ImportError as it plays more nicely with tools that scan installed packages (#2440)
Integrations
- The provided pre-commit hooks no longer specify
language_version
to avoid overridingdefault_language_version
(#2430)
21.7b0
Black
- Configuration files using TOML features higher than spec v0.5.0 are now supported (#2301)
- Add primer support and test for code piped into black via STDIN (#2315)
- Fix internal error when
FORCE_OPTIONAL_PARENTHESES
feature is enabled (#2332) - Accept empty stdin (#2346)
- Provide a more useful error when parsing fails during AST safety checks (#2304)
Docker
- Add new
latest_release
tag automation to follow latest black release on docker images (#2374)
Integrations
- The vim plugin now searches upwards from the directory containing the current buffer instead of the current working directory for pyproject.toml. (#1871)
- The vim plugin now reads the correct string normalization option in pyproject.toml (#1869)
- The vim plugin no longer crashes Black when there's boolean values in pyproject.toml (#1869)
21.6b0
Black
- Fix failure caused by
fmt: skip
and indentation (#2281) - Account for += assignment when deciding whether to split string (#2312)
- Correct max string length calculation when there are string operators (#2292)
- Fixed option usage when using the
--code
flag (#2259) - Do not call
uvloop.install()
when Black is used as a library (#2303) - Added
--required-version
option to require a specific version to be running (#2300) - Fix incorrect custom breakpoint indices when string group contains fake f-strings (#2311)
- Fix regression where
R
prefixes would be lowercased for docstrings (#2285) - Fix handling of named escapes (
\N{...}
) when--experimental-string-processing
is used (#2319)
Integrations
- The official Black action now supports choosing what version to use, and supports the major 3 OSes. (#1940)
21.5b2
Black
- A space is no longer inserted into empty docstrings (#2249)
- Fix handling of .gitignore files containing non-ASCII characters on Windows (#2229)
- Respect
.gitignore
files in all levels, not onlyroot/.gitignore
file (apply.gitignore
rules likegit
does) (#2225) - Restored compatibility with Click 8.0 on Python 3.6 when LANG=C used (#2227)
- Add extra uvloop install + import support if in python env (#2258)
- Fix --experimental-string-processing crash when matching parens are not found (#2283)
- Make sure to split lines that start with a string operator (#2286)
- Fix regular expression that black uses to identify f-expressions (#2287)
Blackd
- Add a lower bound for the
aiohttp-cors
dependency. Only 0.4.0 or higher is supported. (#2231)
Packaging
- Release self-contained x86_64 MacOS binaries as part of the GitHub release pipeline (#2198)
- Always build binaries with the latest available Python (#2260)
Documentation
- Add discussion of magic comments to FAQ page (#2272)
--experimental-string-processing
will be enabled by default in the future (#2273)- Fix typos discovered by codespell (#2228)
- Fix Vim plugin installation instructions. (#2235)
- Add new Frequently Asked Questions page (#2247)
- Fix encoding + symlink issues preventing proper build on Windows (#2262)
21.5b1
Black
- Refactor
src/black/__init__.py
into many files (#2206)
Documentation
- Replaced all remaining references to the
master
branch with themain
branch. Some additional changes in the source code were also made. (#2210) - Sigificantly reorganized the documentation to make much more sense. Check them out by heading over to the stable docs on RTD. (#2174)
21.5b0
Black
- Set
--pyi
mode if--stdin-filename
ends in.pyi
(#2169) - Stop detecting target version as Python 3.9+ with pre-PEP-614 decorators that are being called but with no arguments (#2182)
Black-Primer
- Add
--no-diff
to black-primer to suppress formatting changes (#2187)
21.4b2
Black
-
Fix crash if the user configuration directory is inaccessible. (#2158)
-
Clarify circumstances in which Black may change the AST (#2159)
-
Allow
.gitignore
rules to be overridden by specifyingexclude
inpyproject.toml
or on the command line. (#2170)
Packaging
- Install
primer.json
(used byblack-primer
by default) with black. (#2154)
21.4b1
Black
-
Fix crash on docstrings ending with "\ ". (#2142)
-
Fix crash when atypical whitespace is cleaned out of dostrings (#2120)
-
Reflect the
--skip-magic-trailing-comma
and--experimental-string-processing
flags in the name of the cache file. Without this fix, changes in these flags would not take effect if the cache had already been populated. (#2131) -
Don't remove necessary parentheses from assignment expression containing assert / return statements. (#2143)
Packaging
- Bump pathspec to >= 0.8.1 to solve invalid .gitignore exclusion handling
21.4b0
Black
-
Fixed a rare but annoying formatting instability created by the combination of optional trailing commas inserted by
Black
and optional parentheses looking at pre-existing "magic" trailing commas. This fixes issue #1629 and all of its many many duplicates. (#2126) -
Black
now processes one-line docstrings by stripping leading and trailing spaces, and adding a padding space when needed to break up """". (#1740) -
Black
now cleans up leading non-breaking spaces in comments (#2092) -
Black
now respects--skip-string-normalization
when normalizing multiline docstring quotes (#1637) -
Black
no longer removes all empty lines between non-function code and decorators when formatting typing stubs. NowBlack
enforces a single empty line. (#1646) -
Black
no longer adds an incorrect space after a parenthesized assignment expression in if/while statements (#1655) -
Added
--skip-magic-trailing-comma
/-C
to avoid using trailing commas as a reason to split lines (#1824) -
fixed a crash when PWD=/ on POSIX (#1631)
-
fixed "I/O operation on closed file" when using --diff (#1664)
-
Prevent coloured diff output being interleaved with multiple files (#1673)
-
Added support for PEP 614 relaxed decorator syntax on python 3.9 (#1711)
-
Added parsing support for unparenthesized tuples and yield expressions in annotated assignments (#1835)
-
added
--extend-exclude
argument (PR #2005) -
speed up caching by avoiding pathlib (#1950)
-
--diff
correctly indicates when a file doesn't end in a newline (#1662) -
Added
--stdin-filename
argument to allow stdin to respect--force-exclude
rules (#1780) -
Lines ending with
fmt: skip
will now be not formatted (#1800) -
PR #2053: Black no longer relies on typed-ast for Python 3.8 and higher
-
PR #2053: Python 2 support is now optional, install with
python3 -m pip install black[python2]
to maintain support. -
Exclude
venv
directory by default (#1683) -
Fixed "Black produced code that is not equivalent to the source" when formatting Python 2 docstrings (#2037)
Packaging
- Self-contained native Black binaries are now provided for releases via GitHub Releases (#1743)
20.8b1
Packaging
- explicitly depend on Click 7.1.2 or newer as
Black
no longer works with versions older than 7.0
20.8b0
Black
-
re-implemented support for explicit trailing commas: now it works consistently within any bracket pair, including nested structures (#1288 and duplicates)
-
Black
now reindents docstrings when reindenting code around it (#1053) -
Black
now shows colored diffs (#1266) -
Black
is now packaged using 'py3' tagged wheels (#1388) -
Black
now supports Python 3.8 code, e.g. star expressions in return statements (#1121) -
Black
no longer normalizes capital R-string prefixes as those have a community-accepted meaning (#1244) -
Black
now uses exit code 2 when specified configuration file doesn't exit (#1361) -
Black
now works on AWS Lambda (#1141) -
added
--force-exclude
argument (#1032) -
removed deprecated
--py36
option (#1236) -
fixed
--diff
output when EOF is encountered (#526) -
fixed
# fmt: off
handling around decorators (#560) -
fixed unstable formatting with some
# type: ignore
comments (#1113) -
fixed invalid removal on organizing brackets followed by indexing (#1575)
-
introduced
black-primer
, a CI tool that allows us to run regression tests against existing open source users of Black (#1402) -
introduced property-based fuzzing to our test suite based on Hypothesis and Hypothersmith (#1566)
-
implemented experimental and disabled by default long string rewrapping (#1132), hidden under a
--experimental-string-processing
flag while it's being worked on; this is an undocumented and unsupported feature, you lose Internet points for depending on it (#1609)
Vim plugin
- prefer virtualenv packages over global packages (#1383)
19.10b0
-
added support for PEP 572 assignment expressions (#711)
-
added support for PEP 570 positional-only arguments (#943)
-
added support for async generators (#593)
-
added support for pre-splitting collections by putting an explicit trailing comma inside (#826)
-
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)
-
# fmt: off
/# fmt: on
comment pairs placed multiple times within the same block of code now behave correctly (#1005) -
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) -
Black no longer crashes on Python 3.7 on some platform configurations (#494)
-
Black no longer fails on comments in from-imports (#671)
-
Black no longer fails when the file starts with a backslash (#922)
-
Black no longer merges regular comments with type comments (#1027)
-
Black no longer splits long lines that contain type comments (#997)
-
removed unnecessary parentheses around
yield
expressions (#834) -
added parentheses around long tuples in unpacking assignments (#832)
-
added parentheses around complex powers when they are prefixed by a unary operator (#646)
-
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)
-
blackd
now returns the version of Black in the response headers (#1013) -
blackd
can now output the diff of formats on source code when theX-Diff
header is provided (#969)
19.3b0
-
new option
--target-version
to control which Python versions 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
-
numeric literals are now formatted by Black (#452, #461, #464, #469):
-
numeric literals are normalized to include
_
separators on Python 3.6+ code -
added
--skip-numeric-underscore-normalization
to disable the above behavior and leave numeric underscores as they were in the input -
code with
_
in numeric literals is recognized as Python 3.6+ -
most letters in numeric literals are lowercased (e.g., in
1e10
,0x01
) -
hexadecimal digits are always uppercased (e.g.
0xBADC0DE
)
-
-
added
blackd
, see its documentation for more info (#349) -
adjacent string literals are now correctly split into multiple lines (#463)
-
trailing comma is now added to single imports that don't fit on a line (#250)
-
cache is now populated when
--check
is successful for a file which speeds up consecutive checks of properly formatted unmodified files (#448) -
whitespace at the beginning of the file is now removed (#399)
-
fixed mangling pweave and Spyder IDE special comments (#532)
-
fixed unstable formatting when unpacking big tuples (#267)
-
fixed parsing of
__future__
imports with renames (#389) -
fixed scope of
# fmt: off
when directly precedingyield
and other nodes (#385) -
fixed formatting of lambda expressions with default arguments (#468)
-
fixed
async for
statements: Black no longer breaks them into separate lines (#372) -
note: the Vim plugin stopped registering
,=
as a default chord as it turned out to be a bad idea (#415)
18.6b4
- hotfix: don't freeze when multiple comments directly precede
# fmt: off
(#371)
18.6b3
-
typing stub files (
.pyi
) now have blank lines added after constants (#340) -
# fmt: off
and# fmt: on
are now much more dependable:-
they now work also within bracket pairs (#329)
-
they now correctly work across function/class boundaries (#335)
-
they now work when an indentation block starts with empty lines or misaligned comments (#334)
-
-
made Click not fail on invalid environments; note that Click is right but the likelihood we'll need to access non-ASCII file paths when dealing with Python source code is low (#277)
-
fixed improper formatting of f-strings with quotes inside interpolated expressions (#322)
-
fixed unnecessary slowdown when long list literals where found in a file
-
fixed unnecessary slowdown on AST nodes with very many siblings
-
fixed cannibalizing backslashes during string normalization
-
fixed a crash due to symbolic links pointing outside of the project directory (#338)
18.6b2
-
added
--config
(#65) -
added
-h
equivalent to--help
(#316) -
fixed improper unmodified file caching when
-S
was used -
fixed extra space in string unpacking (#305)
-
fixed formatting of empty triple quoted strings (#313)
-
fixed unnecessary slowdown in comment placement calculation on lines without comments
18.6b1
-
hotfix: don't output human-facing information on stdout (#299)
-
hotfix: don't output cake emoji on non-zero return code (#300)
18.6b0
-
added
--include
and--exclude
(#270) -
added
--skip-string-normalization
(#118) -
added
--verbose
(#283) -
the header output in
--diff
now actually conforms to the unified diff spec -
fixed long trivial assignments being wrapped in unnecessary parentheses (#273)
-
fixed unnecessary parentheses when a line contained multiline strings (#232)
-
fixed stdin handling not working correctly if an old version of Click was used (#276)
-
Black now preserves line endings when formatting a file in place (#258)
18.5b1
-
added
--pyi
(#249) -
added
--py36
(#249) -
Python grammar pickle caches are stored with the formatting caches, making Black work in environments where site-packages is not user-writable (#192)
-
Black now enforces a PEP 257 empty line after a class-level docstring (and/or fields) and the first method
-
fixed invalid code produced when standalone comments were present in a trailer that was omitted from line splitting on a large expression (#237)
-
fixed optional parentheses being removed within
# fmt: off
sections (#224) -
fixed invalid code produced when stars in very long imports were incorrectly wrapped in optional parentheses (#234)
-
fixed unstable formatting when inline comments were moved around in a trailer that was omitted from line splitting on a large expression (#238)
-
fixed extra empty line between a class declaration and the first method if no class docstring or fields are present (#219)
-
fixed extra empty line between a function signature and an inner function or inner class (#196)
18.5b0
-
call chains are now formatted according to the fluent interfaces style (#67)
-
data structure literals (tuples, lists, dictionaries, and sets) are now also always exploded like imports when they don't fit in a single line (#152)
-
slices are now formatted according to PEP 8 (#178)
-
parentheses are now also managed automatically on the right-hand side of assignments and return statements (#140)
-
math operators now use their respective priorities for delimiting multiline expressions (#148)
-
optional parentheses are now omitted on expressions that start or end with a bracket and only contain a single operator (#177)
-
empty parentheses in a class definition are now removed (#145, #180)
-
string prefixes are now standardized to lowercase and
u
is removed on Python 3.6+ only code and Python 2.7+ code with theunicode_literals
future import (#188, #198, #199) -
typing stub files (
.pyi
) are now formatted in a style that is consistent with PEP 484 (#207, #210) -
progress when reformatting many files is now reported incrementally
-
fixed trailers (content with brackets) being unnecessarily exploded into their own lines after a dedented closing bracket (#119)
-
fixed an invalid trailing comma sometimes left in imports (#185)
-
fixed non-deterministic formatting when multiple pairs of removable parentheses were used (#183)
-
fixed multiline strings being unnecessarily wrapped in optional parentheses in long assignments (#215)
-
fixed not splitting long from-imports with only a single name
-
fixed Python 3.6+ file discovery by also looking at function calls with unpacking. This fixed non-deterministic formatting if trailing commas where used both in function signatures with stars and function calls with stars but the former would be reformatted to a single line.
-
fixed crash on dealing with optional parentheses (#193)
-
fixed "is", "is not", "in", and "not in" not considered operators for splitting purposes
-
fixed crash when dead symlinks where encountered
18.4a4
- don't populate the cache on
--check
(#175)
18.4a3
-
added a "cache"; files already reformatted that haven't changed on disk won't be reformatted again (#109)
-
--check
and--diff
are no longer mutually exclusive (#149) -
generalized star expression handling, including double stars; this fixes multiplication making expressions "unsafe" for trailing commas (#132)
-
Black no longer enforces putting empty lines behind control flow statements (#90)
-
Black now splits imports like "Mode 3 + trailing comma" of isort (#127)
-
fixed comment indentation when a standalone comment closes a block (#16, #32)
-
fixed standalone comments receiving extra empty lines if immediately preceding a class, def, or decorator (#56, #154)
-
fixed
--diff
not showing entire path (#130) -
fixed parsing of complex expressions after star and double stars in function calls (#2)
-
fixed invalid splitting on comma in lambda arguments (#133)
-
fixed missing splits of ternary expressions (#141)
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 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) -
add line breaks before all delimiters, except in cases like commas, to better comply with PEP 8 (#73)
-
standardize string literals to use double quotes (almost) everywhere (#75)
-
fixed handling of standalone comments within nested bracketed expressions; Black will no longer produce super long lines or put all standalone comments at the end of the expression (#22)
-
fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace (#80)
-
fixed 18.3a4 regression:
# yapf: disable
usage as trailing comment would cause Black to not emit the rest of the file (#95) -
when CTRL+C is pressed while formatting many files, Black no longer freaks out with a flurry of asyncio-related exceptions
-
only allow up to two empty lines on module level and only single empty lines within functions (#74)
18.3a4
-
# fmt: off
and# fmt: on
are implemented (#5) -
automatic detection of deprecated Python 2 forms of print statements and exec statements in the formatted file (#49)
-
use proper spaces for complex expressions in default values of typed function arguments (#60)
-
only return exit code 1 when --check is used (#50)
-
don't remove single trailing commas from square bracket indexing (#59)
-
don't omit whitespace if the previous factor leaf wasn't a math operator (#55)
-
omit extra space in kwarg unpacking if it's the first argument (#46)
-
omit extra space in Sphinx auto-attribute comments (#68)
18.3a3
-
don't remove single empty lines outside of bracketed expressions (#19)
-
added ability to pipe formatting from stdin to stdin (#25)
-
restored ability to format code with legacy usage of
async
as a name (#20, #42) -
even better handling of numpy-style array indexing (#33, again)
18.3a2
-
changed positioning of binary operators to occur at beginning of lines instead of at the end, following a recent change to PEP 8 (#21)
-
ignore empty bracket pairs while splitting. This avoids very weirdly looking formattings (#34, #35)
-
remove a trailing comma if there is a single argument to a call
-
if top level functions were separated by a comment, don't put four empty lines after the upper function
-
fixed unstable formatting of newlines with imports
-
fixed unintentional folding of post scriptum standalone comments into last statement if it was a simple statement (#18, #28)
-
fixed missing space in numpy-style array indexing (#33)
-
fixed spurious space after star-based unary expressions (#31)
18.3a1
-
added
--check
-
only put trailing commas in function signatures and calls if it's safe to do so. If the file is Python 3.6+ it's always safe, otherwise only safe if there are no
*args
or**kwargs
used in the signature or call. (#8) -
fixed invalid spacing of dots in relative imports (#6, #13)
-
fixed invalid splitting after comma on unpacked variables in for-loops (#23)
-
fixed spurious space in parenthesized set expressions (#7)
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fixed spurious space after opening parentheses and in default arguments (#14, #17)
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fixed spurious space after unary operators when the operand was a complex expression (#15)
18.3a0
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first published version, Happy 🍰 Day 2018!
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alpha quality
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date-versioned (see: https://calver.org/)
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