Update dependency black to v24 #80

renovate · 2024-10-30T02:40:24Z

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
black (changelog)	`==18.9b0` -> `==24.10.0`

Release Notes

psf/black (black)

`v24.10.0`

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Highlights

Black is now officially tested with Python 3.13 and provides Python 3.13
mypyc-compiled wheels. (#4436) (#4449)
Black will issue an error when used with Python 3.12.5, due to an upstream memory
safety issue in Python 3.12.5 that can cause Black's AST safety checks to fail. Please
use Python 3.12.6 or Python 3.12.4 instead. (#4447)
Black no longer supports running with Python 3.8 (#4452)

Stable style

Fix crashes involving comments in parenthesised return types or X | Y style unions.
(#4453)
Fix skipping Jupyter cells with unknown %% magic (#4462)

Preview style

Fix type annotation spacing between * and more complex type variable tuple (i.e. def fn(*args: *tuple[*Ts, T]) -> None: pass) (#4440)

Caching

Fix bug where the cache was shared between runs with and without --unstable (#4466)

Packaging

Upgrade version of mypyc used to 1.12 beta (#4450) (#4449)
blackd now requires a newer version of aiohttp. (#4451)

Output

Added Python target version information on parse error (#4378)
Add information about Black version to internal error messages (#4457)

`v24.8.0`

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Stable style

Fix crash when # fmt: off is used before a closing parenthesis or bracket. (#4363)

Packaging

Packaging metadata updated: docs are explictly linked, the issue tracker is now also
linked. This improves the PyPI listing for Black. (#4345)

Parser

Fix regression where Black failed to parse a multiline f-string containing another
multiline string (#4339)
Fix regression where Black failed to parse an escaped single quote inside an f-string
(#4401)
Fix bug with Black incorrectly parsing empty lines with a backslash (#4343)
Fix bugs with Black's tokenizer not handling \{ inside f-strings very well (#4422)
Fix incorrect line numbers in the tokenizer for certain tokens within f-strings
(#4423)

Performance

Improve performance when a large directory is listed in .gitignore (#4415)

Blackd

Fix blackd (and all extras installs) for docker container (#4357)

`v24.4.2`

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This is a bugfix release to fix two regressions in the new f-string parser introduced in
24.4.1.

Parser

Fix regression where certain complex f-strings failed to parse (#4332)

Performance

Fix bad performance on certain complex string literals (#4331)

`v24.4.1`

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Highlights

Add support for the new Python 3.12 f-string syntax introduced by PEP 701 (#3822)

Stable style

Fix crash involving indented dummy functions containing newlines (#4318)

Parser

Add support for type parameter defaults, a new syntactic feature added to Python 3.13
by PEP 696 (#4327)

Integrations

Github Action now works even when git archive is skipped (#4313)

`v24.4.0`

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Stable style

Fix unwanted crashes caused by AST equivalency check (#4290)

Preview style

if guards in case blocks are now wrapped in parentheses when the line is too long.
(#4269)
Stop moving multiline strings to a new line unless inside brackets (#4289)

Integrations

Add a new option use_pyproject to the GitHub Action psf/black. This will read the
Black version from pyproject.toml. (#4294)

`v24.3.0`

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Highlights

This release is a milestone: it fixes Black's first CVE security vulnerability. If you
run Black on untrusted input, or if you habitually put thousands of leading tab
characters in your docstrings, you are strongly encouraged to upgrade immediately to fix
CVE-2024-21503.

This release also fixes a bug in Black's AST safety check that allowed Black to make
incorrect changes to certain f-strings that are valid in Python 3.12 and higher.

Stable style

Don't move comments along with delimiters, which could cause crashes (#4248)
Strengthen AST safety check to catch more unsafe changes to strings. Previous versions
of Black would incorrectly format the contents of certain unusual f-strings containing
nested strings with the same quote type. Now, Black will crash on such strings until
support for the new f-string syntax is implemented. (#4270)
Fix a bug where line-ranges exceeding the last code line would not work as expected
(#4273)

Performance

Fix catastrophic performance on docstrings that contain large numbers of leading tab
characters. This fixes
CVE-2024-21503.
(#4278)

Documentation

Note what happens when --check is used with --quiet (#4236)

`v24.2.0`

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Stable style

Fixed a bug where comments where mistakenly removed along with redundant parentheses
(#4218)

Preview style

Move the hug_parens_with_braces_and_square_brackets feature to the unstable style
due to an outstanding crash and proposed formatting tweaks (#4198)
Fixed a bug where base expressions caused inconsistent formatting of ** in tenary
expression (#4154)
Checking for newline before adding one on docstring that is almost at the line limit
(#4185)
Remove redundant parentheses in case statement if guards (#4214).

Configuration

Fix issue where Black would ignore input files in the presence of symlinks (#4222)
Black now ignores pyproject.toml that is missing a tool.black section when
discovering project root and configuration. Since Black continues to use version
control as an indicator of project root, this is expected to primarily change behavior
for users in a monorepo setup (desirably). If you wish to preserve previous behavior,
simply add an empty [tool.black] to the previously discovered pyproject.toml
(#4204)

Output

Black will swallow any SyntaxWarnings or DeprecationWarnings produced by the ast
module when performing equivalence checks (#4189)

Integrations

Add a JSONSchema and provide a validate-pyproject entry-point (#4181)

`v24.1.1`

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Bugfix release to fix a bug that made Black unusable on certain file systems with strict
limits on path length.

Preview style

Consistently add trailing comma on typed parameters (#4164)

Configuration

Shorten the length of the name of the cache file to fix crashes on file systems that
do not support long paths (#4176)

`v24.1.0`

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Highlights

This release introduces the new 2024 stable style (#4106), stabilizing the following
changes:

Add parentheses around if-else expressions (#2278)
Dummy class and function implementations consisting only of ... are formatted more
compactly (#3796)
If an assignment statement is too long, we now prefer splitting on the right-hand side
(#3368)
Hex codes in Unicode escape sequences are now standardized to lowercase (#2916)
Allow empty first lines at the beginning of most blocks (#3967, #4061)
Add parentheses around long type annotations (#3899)
Enforce newline after module docstrings (#3932, #4028)
Fix incorrect magic trailing comma handling in return types (#3916)
Remove blank lines before class docstrings (#3692)
Wrap multiple context managers in parentheses if combined in a single with statement
(#3489)
Fix bug in line length calculations for power operations (#3942)
Add trailing commas to collection literals even if there's a comment after the last
entry (#3393)
When using --skip-magic-trailing-comma or -C, trailing commas are stripped from
subscript expressions with more than 1 element (#3209)
Add extra blank lines in stubs in a few cases (#3564, #3862)
Accept raw strings as docstrings (#3947)
Split long lines in case blocks (#4024)
Stop removing spaces from walrus operators within subscripts (#3823)
Fix incorrect formatting of certain async statements (#3609)
Allow combining # fmt: skip with other comments (#3959)

There are already a few improvements in the --preview style, which are slated for the
2025 stable style. Try them out and
share your feedback. In the past, the preview
style has included some features that we were not able to stabilize. This year, we're
adding a separate --unstable style for features with known problems. Now, the
--preview style only includes features that we actually expect to make it into next
year's stable style.

Stable style

Several bug fixes were made in features that are moved to the stable style in this
release:

Fix comment handling when parenthesising conditional expressions (#4134)
Fix bug where spaces were not added around parenthesized walruses in subscripts,
unlike other binary operators (#4109)
Remove empty lines before docstrings in async functions (#4132)
Address a missing case in the change to allow empty lines at the beginning of all
blocks, except immediately before a docstring (#4130)
For stubs, fix logic to enforce empty line after nested classes with bodies (#4141)

Preview style

Add --unstable style, covering preview features that have known problems that would
block them from going into the stable style. Also add the --enable-unstable-feature
flag; for example, use
--enable-unstable-feature hug_parens_with_braces_and_square_brackets to apply this
preview feature throughout 2024, even if a later Black release downgrades the feature
to unstable (#4096)
Format module docstrings the same as class and function docstrings (#4095)
Fix crash when using a walrus in a dictionary (#4155)
Fix unnecessary parentheses when wrapping long dicts (#4135)
Stop normalizing spaces before # fmt: skip comments (#4146)

Configuration

Print warning when configuration in pyproject.toml contains an invalid key (#4165)
Fix symlink handling, properly ignoring symlinks that point outside of root (#4161)
Fix cache mtime logic that resulted in false positive cache hits (#4128)
Remove the long-deprecated --experimental-string-processing flag. This feature can
currently be enabled with --preview --enable-unstable-feature string_processing.
(#4096)

Integrations

Revert the change to run Black's pre-commit integration only on specific git hooks
(#3940) for better compatibility with older versions of pre-commit (#4137)

`v23.12.1`

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Packaging

Fixed a bug that included dependencies from the d extra by default (#4108)

`v23.12.0`

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Highlights

It's almost 2024, which means it's time for a new edition of Black's stable style!
Together with this release, we'll put out an alpha release 24.1a1 showcasing the draft
2024 stable style, which we'll finalize in the January release. Please try it out and
share your feedback.

This release (23.12.0) will still produce the 2023 style. Most but not all of the
changes in --preview mode will be in the 2024 stable style.

Stable style

Fix bug where # fmt: off automatically dedents when used with the --line-ranges
option, even when it is not within the specified line range. (#4084)
Fix feature detection for parenthesized context managers (#4104)

Preview style

Prefer more equal signs before a break when splitting chained assignments (#4010)
Standalone form feed characters at the module level are no longer removed (#4021)
Additional cases of immediately nested tuples, lists, and dictionaries are now
indented less (#4012)
Allow empty lines at the beginning of all blocks, except immediately before a
docstring (#4060)
Fix crash in preview mode when using a short --line-length (#4086)
Keep suites consisting of only an ellipsis on their own lines if they are not
functions or class definitions (#4066) (#4103)

Configuration

--line-ranges now skips Black's internal stability check in --safe mode. This
avoids a crash on rare inputs that have many unformatted same-content lines. (#4034)

Packaging

Upgrade to mypy 1.7.1 (#4049) (#4069)
Faster compiled wheels are now available for CPython 3.12 (#4070)

Integrations

Enable 3.12 CI (#4035)
Build docker images in parallel (#4054)
Build docker images with 3.12 (#4055)

`v23.11.0`

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Highlights

Support formatting ranges of lines with the new --line-ranges command-line option
(#4020)

Stable style

Fix crash on formatting bytes strings that look like docstrings (#4003)
Fix crash when whitespace followed a backslash before newline in a docstring (#4008)
Fix standalone comments inside complex blocks crashing Black (#4016)
Fix crash on formatting code like await (a ** b) (#3994)
No longer treat leading f-strings as docstrings. This matches Python's behaviour and
fixes a crash (#4019)

Preview style

Multiline dicts and lists that are the sole argument to a function are now indented
less (#3964)
Multiline unpacked dicts and lists as the sole argument to a function are now also
indented less (#3992)
In f-string debug expressions, quote types that are visible in the final string are
now preserved (#4005)
Fix a bug where long case blocks were not split into multiple lines. Also enable
general trailing comma rules on case blocks (#4024)
Keep requiring two empty lines between module-level docstring and first function or
class definition (#4028)
Add support for single-line format skip with other comments on the same line (#3959)

Configuration

Consistently apply force exclusion logic before resolving symlinks (#4015)
Fix a bug in the matching of absolute path names in --include (#3976)

Performance

Fix mypyc builds on arm64 on macOS (#4017)

Integrations

Black's pre-commit integration will now run only on git hooks appropriate for a code
formatter (#3940)

`v23.10.1`

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Highlights

Maintenance release to get a fix out for GitHub Action edge case (#3957)

Preview style

Fix merging implicit multiline strings that have inline comments (#3956)
Allow empty first line after block open before a comment or compound statement (#3967)

Packaging

Change Dockerfile to hatch + compile black (#3965)

Integrations

The summary output for GitHub workflows is now suppressible using the summary
parameter. (#3958)
Fix the action failing when Black check doesn't pass (#3957)

Documentation

It is known Windows documentation CI is broken
https://github.com/psf/black/issues/39683968

`v23.10.0`

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Stable style

Fix comments getting removed from inside parenthesized strings (#3909)

Preview style

Fix long lines with power operators getting split before the line length (#3942)
Long type hints are now wrapped in parentheses and properly indented when split across
multiple lines (#3899)
Magic trailing commas are now respected in return types. (#3916)
Require one empty line after module-level docstrings. (#3932)
Treat raw triple-quoted strings as docstrings (#3947)

Configuration

Fix cache versioning logic when BLACK_CACHE_DIR is set (#3937)

Parser

Fix bug where attributes named type were not accepted inside match statements
(#3950)
Add support for PEP 695 type aliases containing lambdas and other unusual expressions
(#3949)

Output

Black no longer attempts to provide special errors for attempting to format Python 2
code (#3933)
Black will more consistently print stacktraces on internal errors in verbose mode
(#3938)

Integrations

The action output displayed in the job summary is now wrapped in Markdown (#3914)

`v23.9.1`

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Due to various issues, the previous release (23.9.0) did not include compiled mypyc
wheels, which make Black significantly faster. These issues have now been fixed, and
this release should come with compiled wheels once again.

There will be no wheels for Python 3.12 due to a bug in mypyc. We will provide 3.12
wheels in a future release as soon as the mypyc bug is fixed.

Packaging

Upgrade to mypy 1.5.1 (#3864)

Performance

Store raw tuples instead of NamedTuples in Black's cache, improving performance and
decreasing the size of the cache (#3877)

`v23.9.0`

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Preview style

More concise formatting for dummy implementations (#3796)
In stub files, add a blank line between a statement with a body (e.g an
if sys.version_info > (3, x):) and a function definition on the same level (#3862)
Fix a bug whereby spaces were removed from walrus operators within subscript(#3823)

Configuration

Black now applies exclusion and ignore logic before resolving symlinks (#3846)

Performance

Avoid importing IPython if notebook cells do not contain magics (#3782)
Improve caching by comparing file hashes as fallback for mtime and size (#3821)

Blackd

Fix an issue in blackd with single character input (#3558)

Integrations

Black now has an
official pre-commit mirror. Swapping
https://github.com/psf/black to https://github.com/psf/black-pre-commit-mirror in
your .pre-commit-config.yaml will make Black about 2x faster (#3828)
The .black.env folder specified by ENV_PATH will now be removed on the completion
of the GitHub Action (#3759)

`v23.7.0`

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Highlights

Runtime support for Python 3.7 has been removed. Formatting 3.7 code will still be
supported until further notice (#3765)

Stable style

Fix a bug where an illegal trailing comma was added to return type annotations using
PEP 604 unions (#3735)
Fix several bugs and crashes where comments in stub files were removed or mishandled
under some circumstances (#3745)
Fix a crash with multi-line magic comments like type: ignore within parentheses
(#3740)
Fix error in AST validation when Black removes trailing whitespace in a type comment
(#3773)

Preview style

Implicitly concatenated strings used as function args are no longer wrapped inside
parentheses (#3640)
Remove blank lines between a class definition and its docstring (#3692)

Configuration

The --workers argument to Black can now be specified via the BLACK_NUM_WORKERS
environment variable (#3743)
.pytest_cache, .ruff_cache and .vscode are now excluded by default (#3691)
Fix Black not honouring pyproject.toml settings when running --stdin-filename
and the pyproject.toml found isn't in the current working directory (#3719)
Black will now error if exclude and extend-exclude have invalid data types in
pyproject.toml, instead of silently doing the wrong thing (#3764)

Packaging

Upgrade mypyc from 0.991 to 1.3 (#3697)
Remove patching of Click that mitigated errors on Python 3.6 with LANG=C (#3768)

Parser

Add support for the new PEP 695 syntax in Python 3.12 (#3703)

Performance

Speed up Black significantly when the cache is full (#3751)
Avoid importing IPython in a case where we wouldn't need it (#3748)

Output

Use aware UTC datetimes internally, avoids deprecation warning on Python 3.12 (#3728)
Change verbose logging to exactly mirror Black's logic for source discovery (#3749)

Blackd

The blackd argument parser now shows the default values for options in their help
text (#3712)

Integrations

Black is now tested with
PYTHONWARNDEFAULTENCODING = 1
(#3763)
Update GitHub Action to display black output in the job summary (#3688)

Documentation

Add a CITATION.cff file to the root of the repository, containing metadata on how to
cite this software (#3723)
Update the classes and exceptions documentation in Developer reference to match
the latest code base (#3755)

`v23.3.0`

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Highlights

This release fixes a longstanding confusing behavior in Black's GitHub action, where the
version of the action did not determine the version of Black being run (issue #3382). In
addition, there is a small bug fix around imports and a number of improvements to the
preview style.

Please try out the
preview style
with black --preview and tell us your feedback. All changes in the preview style are
expected to become part of Black's stable style in January 2024.

Stable style

Import lines with # fmt: skip and # fmt: off no longer have an extra blank line
added when they are right after another import line (#3610)

Preview style

Add trailing commas to collection literals even if there's a comment after the last
entry (#3393)
async def, async for, and async with statements are now formatted consistently
compared to their non-async version. (#3609)
with statements that contain two context managers will be consistently wrapped in
parentheses (#3589)
Let string splitters respect East Asian Width
(#3445)
Now long string literals can be split after East Asian commas and periods (、 U+3001
IDEOGRAPHIC COMMA, 。 U+3002 IDEOGRAPHIC FULL STOP, & ， U+FF0C FULLWIDTH COMMA)
besides before spaces (#3445)
For stubs, enforce one blank line after a nested class with a body other than just
... (#3564)
Improve handling of multiline strings by changing line split behavior (#1879)

Parser

Added support for formatting files with invalid type comments (#3594)

Integrations

Update GitHub Action to use the version of Black equivalent to action's version if
version input is not specified (#3543)
Fix missing Python binary path in autoload script for vim (#3508)

Documentation

Document that only the most recent release is supported for security issues;
vulnerabilities should be reported through Tidelift (#3612)

`v23.1.0`

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Highlights

This is the first release of 2023, and following our
stability policy,
it comes with a number of improvements to our stable style, including improvements to
empty line handling, removal of redundant parentheses in several contexts, and output
that highlights implicitly concatenated strings better.

There are also many changes to the preview style; try out black --preview and give us
feedback to help us set the stable style for next year.

In addition to style changes, Black now automatically infers the supported Python
versions from your pyproject.toml file, removing the need to set Black's target
versions separately.

Stable style

Introduce the 2023 stable style, which incorporates most aspects of last year's
preview style (#3418). Specific changes:
- Enforce empty lines before classes and functions with sticky leading comments
  (#3302) (22.12.0)
- Reformat empty and whitespace-only files as either an empty file (if no newline is
  present) or as a single newline character (if a newline is present) (#3348)
  (22.12.0)
- Implicitly concatenated strings used as function args are now wrapped inside
  parentheses (#3307) (22.12.0)
- Correctly handle trailing commas that are inside a line's leading non-nested parens
  (#3370) (22.12.0)
- --skip-string-normalization / -S now prevents docstring prefixes from being
  normalized as expected (#3168) (since 22.8.0)
- When using --skip-magic-trailing-comma or -C, trailing commas are stripped from
  subscript expressions with more than 1 element (#3209) (22.8.0)
- Implicitly concatenated strings inside a list, set, or tuple are now wrapped inside
  parentheses (#3162) (22.8.0)
- Fix a string merging/split issue when a comment is present in the middle of
  implicitly concatenated strings on its own line (#3227) (22.8.0)
- Docstring quotes are no longer moved if it would violate the line length limit
  (#3044, #3430) (22.6.0)
- Parentheses around return annotations are now managed (#2990) (22.6.0)
- Remove unnecessary parentheses around awaited objects (#2991) (22.6.0)
- Remove unnecessary parentheses in with statements (#2926) (22.6.0)
- Remove trailing newlines after code block open (#3035) (22.6.0)
- Code cell separators #%% are now standardised to # %% (#2919) (22.3.0)
- Remove unnecessary parentheses from except statements (#2939) (22.3.0)
- Remove unnecessary parentheses from tuple unpacking in for loops (#2945) (22.3.0)
- Avoid magic-trailing-comma in single-element subscripts (#2942) (22.3.0)
Fix a crash when a colon line is marked between # fmt: off and # fmt: on (#3439)

Preview style

Format hex codes in unicode escape sequences in string literals (#2916)
Add parentheses around if-else expressions (#2278)
Improve performance on large expressions that contain many strings (#3467)
Fix a crash in preview style with assert + parenthesized string (#3415)
Fix crashes in preview style with walrus operators used in function return annotations
and except clauses (#3423)
Fix a crash in preview advanced string processing where mixed implicitly concatenated
regular and f-strings start with an empty span (#3463)
Fix a crash in preview advanced string processing where a standalone comment is placed
before a dict's value (#3469)
Fix an issue where extra empty lines are added when a decorator has # fmt: skip
applied or there is a standalone comment between decorators (#3470)
Do not put the closing quotes in a docstring on a separate line, even if the line is
too long (#3430)
Long values in dict literals are now wrapped in parentheses; correspondingly
unnecessary parentheses around short values in dict literals are now removed; long
string lambda values are now wrapped in parentheses (#3440)
Fix two crashes in preview style involving edge cases with docstrings (#3451)
Exclude string type annotations from improved string processing; fix crash when the
return type annotation is stringified and spans across multiple lines (#3462)
Wrap multiple context managers in parentheses when targeting Python 3.9+ (#3489)
Fix several crashes in preview style with walrus operators used in with statements
or tuples (#3473)
Fix an invalid quote escaping bug in f-string expressions where it produced invalid
code. Implicitly concatenated f-strings with different quotes can now be merged or
quote-normalized by changing the quotes used in expressions. (#3509)
Fix crash on await (yield) when Black is compiled with mypyc (#3533)

Configuration

Black now tries to infer its --target-version from the project metadata specified in
pyproject.toml (#3219)

Packaging

Upgrade mypyc from 0.971 to 0.991 so mypycified Black can be built on armv7
(#3380)
- This also fixes some crashes while using compiled Black with a debug build of
  CPython
Drop specific support for the tomli requirement on 3.11 alpha releases, working
around a bug that would cause the requirement not to be installed on any non-final
Python releases (#3448)
Black now depends on packaging version 22.0 or later. This is required for new
functionality that needs to parse part of the project metadata (#3219)

Output

Calling black --help multiple times will return the same help contents each time
(#3516)
Verbose logging now shows the values of pyproject.toml configuration variables
(#3392)
Fix false symlink detection messages in verbose output due to using an incorrect
relative path to the project root (#3385)

Integrations

Move 3.11 CI to normal flow now that all dependencies support 3.11 (#3446)
Docker: Add new latest_prerelease tag automation to follow latest black alpha
release on docker images (#3465)

Documentation

Expand vim-plug installation instructions to offer more explicit options (#3468)

`v22.12.0`

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Preview style

Enforce empty lines before classes and functions with sticky leading comments (#3302)
Reformat empty and whitespace-only files as either an empty file (if no newline is
present) or as a single newline character (if a newline is present) (#3348)
Implicitly concatenated strings used as function args are now wrapped inside
parentheses (#3307)
For assignment statements, prefer splitting the right hand side if the left hand side
fits on a single line (#3368)
Correctly handle trailing commas that are inside a line's leading non-nested parens
(#3370)

Configuration

Fix incorrectly applied .gitignore rules by considering the .gitignore location
and the relative path to the target file (#3338)
Fix incorrectly ignoring .gitignore presence when more than one source directory is
specified (#3336)

Parser

Parsing support has been added for walruses inside generator expression that are
passed as function args (for example,
any(match := my_re.match(text) for text in texts)) (#3327).

Integrations

Vim plugin: Optionally allow using the system installation of Black via
let g:black_use_virtualenv = 0(#3309)

`v22.10.0`

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Highlights

Runtime support for Python 3.6 has been removed. Formatting 3.6 code will still be
supported until further notice.

Stable style

Fix a crash when # fmt: on is used on a different block level than # fmt: off
(#3281)

Preview style

Fix a crash when formatting some dicts with parenthesis-wrapped long string keys
(#3262)

Configuration

.ipynb_checkpoints directories are now excluded by default (#3293)
Add --skip-source-first-line / -x option to ignore the first line of source code
while formatting (#3299)

Packaging

Executables made with PyInstaller will no longer crash when formatting several files
at once on macOS. Native x86-64 executables for macOS are available once again.
(#3275)
Hatchling is now used as the build backend. This will not have any effect for users
who install Black with its wheels from PyPI. (#3233)
Faster compiled wheels are now available for CPython 3.11 (#3276)

Blackd

Windows style (CRLF) newlines will be preserved (#3257).

Integrations

Vim plugin: add flag (g:black_preview) to enable/disable the preview style (#3246)
Update GitHub Action to support formatting of Jupyter Notebook files via a jupyter
option (#3282)
Update GitHub Action to support use of version specifiers (e.g. <23) for Black
version (#3265)

`v22.8.0`

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Highlights

Python 3.11 is now supported, except for blackd as aiohttp does not support 3.11 as
of publishing (#3234)
This is the last release that supports running Black on Python 3.6 (formatting 3.6
code will continue to be supported until further notice)
Reword the stability policy to say that we may, in rare cases, make changes that
affect code that was not previously formatted by Black (#3155)

Stable style

Fix an infinite loop when using # fmt: on/off in the middle of an expression or code
block (#3158)
Fix incorrect handling of # fmt: skip on colon (:) lines (#3148)
Comments are no longer deleted when a line had spaces removed around power operators
(#2874)

Preview style

Single-character closing docstring quotes are no longer moved to their own line as
this is invalid. This was a bug introduced in version 22.6.0. (#3166)
--skip-string-normalization / -S now prevents docstring prefixes from being
normalized as expected (#3168)
When using --skip-magic-trailing-comma or -C, trailing commas are stripped from
subscript expressions with more than 1 element (#3209)
Implicitly concatenated strings inside a list, set, or tuple are now wrapped inside
parentheses (#3162)
Fix a string merging/split issue when a comment is present in the middle of implicitly
concatenated strings on its own line (#3227)

Blackd

blackd now supports enabling the preview style via the X-Preview header (#3217)

Configuration

Black now uses the presence of debug f-strings to detect target version (#3215)
Fix misdetection of project root and verbose logging of sources in cases involving
--stdin-filename (#3216)
Immediate .gitignore files in source directories given on the command line are now
also respected, previously only .gitignore files in the project root and
automatically discovered directories were respected (#3237)

Documentation

Recommend using BlackConnect in IntelliJ IDEs (#3150)

Integrations

Vim plugin: prefix messages with Black: so it's clear they come from Black (#3194)
Docker: changed to a /opt/venv installation + added to PATH to be available to
non-root users (#3202)

Output

Change from deprecated asyncio.get_event_loop() to create our event loop which
removes DeprecationWarning (#3164)
Remove logging from internal blib2to3 library since it regularly emits error logs
about failed caching that can and should be ignored (#3193)

Parser

Type comments are now included in the AST equivalence check consistently so accidental
deletion raises an error. Though type comments can't be tracked when running on PyPy
3.7 due to standard library limitations. (#2874)

Performance

Reduce Black's startup time when formatting a single file by 15-30% (#3211)

`v22.6.0`

Compare Source

Style

Fix unstable formatting involving #fmt: skip and # fmt:skip comments (notice the
lack of spaces) (#2970)

Preview style

Docstring quotes are no longer moved if it would violate the line length limit (#3044)
Parentheses around return annotations are now managed (#2990)
Remove unnecessary parentheses around awaited objects (#2991)
Remove unnecessary parentheses in with statements (#2926)
Remove trailing newlines after code block open (#3035)

Integrations

Add scripts/migrate-black.py script to ease introduction of Black to a Git project
(#3038)

Output

Output Python version and implementation as part of --version flag (#2997)

Packaging

Use tomli instead of tomllib on Python 3.11 builds where tomllib is not
available (#2987)

Parser

PEP 654 syntax (for example,
except *ExceptionGroup:) is now supported (#3016)
PEP 646 syntax (for example,
Array[Batch, *Shape] or def fn(*args: *T) -> None) is now supported (#3071)

Vim Plugin

Fix strtobool function. It didn't parse true/on/false/off. (#3025)

`v22.3.0`

Compare Source

Preview style

Code cell separators #%% are now standardised to # %% (#2919)
Remove unnecessary parentheses from except statements (#2939)
Remove unnecessary parentheses from tuple unpacking in for loops (#2945)
Avoid magic-trailing-comma in single-element subscripts (#2942)

Configuration

Do not format __pypackages__ directories by default (#2836)
Add support for specifying stable version with --required-version (#2832).
Avoid crashing when the user has no homedir (#2814)
Avoid crashing when md5 is not available (#2905)
Fix handling of directory junctions on Windows (#2904)

Documentation

Update pylint config documentation (#2931)

Integrations

Move test to disable plugin in Vim/Neovim, which speeds up loading (#2896)

Output

In verbose mode, log when Black is using user-level config (#2861)

Packaging

Fix Black to work with Click 8.1.0 (#2966)
On Python 3.11 and newer, use the standard library's tomllib instead of tomli
(#2903)

Configuration

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Update dependency black to v24

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Update dependency black to v24 #80

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Release Notes

Highlights

Stable style

Preview style

Caching

Packaging

Output

Stable style

Packaging

Parser

Performance

Blackd

Parser

Performance

Highlights

Stable style

Parser

Integrations

Stable style

Preview style

Integrations

Highlights

Stable style

Performance

Documentation

Stable style

Preview style

Configuration

Output

Integrations

Preview style

Configuration

Highlights

Stable style

Preview style

Configuration

Integrations

Packaging

Highlights

Stable style

Preview style

Configuration

Packaging

Integrations

Highlights

Stable style

Preview style

Configuration

Performance

Integrations

Highlights

Preview style

Packaging

Integrations

Documentation

Stable style

Preview style

Configuration

Parser

Output

Integrations

Packaging

Performance

Preview style

Configuration

Performance

Blackd

Integrations

Highlights

Stable style

Preview style

Configuration

Packaging

Parser

Performance