psf/black
### [`v22.10.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#22100)
[Compare Source](https://togithub.com/psf/black/compare/22.8.0...22.10.0)
##### 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](https://togithub.com/psf/black/issues/3281))
##### Preview style
- Fix a crash when formatting some dicts with parenthesis-wrapped long string keys
([#3262](https://togithub.com/psf/black/issues/3262))
##### Configuration
- `.ipynb_checkpoints` directories are now excluded by default ([#3293](https://togithub.com/psf/black/issues/3293))
- Add `--skip-source-first-line` / `-x` option to ignore the first line of source code
while formatting ([#3299](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3233))
- Faster compiled wheels are now available for CPython 3.11 ([#3276](https://togithub.com/psf/black/issues/3276))
##### *Blackd*
- Windows style (CRLF) newlines will be preserved ([#3257](https://togithub.com/psf/black/issues/3257)).
##### Integrations
- Vim plugin: add flag (`g:black_preview`) to enable/disable the preview style ([#3246](https://togithub.com/psf/black/issues/3246))
- Update GitHub Action to support formatting of Jupyter Notebook files via a `jupyter`
option ([#3282](https://togithub.com/psf/black/issues/3282))
- Update GitHub Action to support use of version specifiers (e.g. `<23`) for Black
version ([#3265](https://togithub.com/psf/black/issues/3265))
### [`v22.8.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2280)
[Compare Source](https://togithub.com/psf/black/compare/22.6.0...22.8.0)
##### Highlights
- Python 3.11 is now supported, except for *blackd* as aiohttp does not support 3.11 as
of publishing ([#3234](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3155))
##### Stable style
- Fix an infinite loop when using `# fmt: on/off` in the middle of an expression or code
block ([#3158](https://togithub.com/psf/black/issues/3158))
- Fix incorrect handling of `# fmt: skip` on colon (`:`) lines ([#3148](https://togithub.com/psf/black/issues/3148))
- Comments are no longer deleted when a line had spaces removed around power operators
([#2874](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3166))
- `--skip-string-normalization` / `-S` now prevents docstring prefixes from being
normalized as expected ([#3168](https://togithub.com/psf/black/issues/3168))
- When using `--skip-magic-trailing-comma` or `-C`, trailing commas are stripped from
subscript expressions with more than 1 element ([#3209](https://togithub.com/psf/black/issues/3209))
- Implicitly concatenated strings inside a list, set, or tuple are now wrapped inside
parentheses ([#3162](https://togithub.com/psf/black/issues/3162))
- Fix a string merging/split issue when a comment is present in the middle of implicitly
concatenated strings on its own line ([#3227](https://togithub.com/psf/black/issues/3227))
##### *Blackd*
- `blackd` now supports enabling the preview style via the `X-Preview` header ([#3217](https://togithub.com/psf/black/issues/3217))
##### Configuration
- Black now uses the presence of debug f-strings to detect target version ([#3215](https://togithub.com/psf/black/issues/3215))
- Fix misdetection of project root and verbose logging of sources in cases involving
`--stdin-filename` ([#3216](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3237))
##### Documentation
- Recommend using BlackConnect in IntelliJ IDEs ([#3150](https://togithub.com/psf/black/issues/3150))
##### Integrations
- Vim plugin: prefix messages with ` Black: ` so it's clear they come from Black ([#3194](https://togithub.com/psf/black/issues/3194))
- Docker: changed to a /opt/venv installation + added to PATH to be available to
non-root users ([#3202](https://togithub.com/psf/black/issues/3202))
##### Output
- Change from deprecated `asyncio.get_event_loop()` to create our event loop which
removes DeprecationWarning ([#3164](https://togithub.com/psf/black/issues/3164))
- Remove logging from internal `blib2to3` library since it regularly emits error logs
about failed caching that can and should be ignored ([#3193](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/2874))
##### Performance
- Reduce Black's startup time when formatting a single file by 15-30% ([#3211](https://togithub.com/psf/black/issues/3211))
### [`v22.6.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2260)
[Compare Source](https://togithub.com/psf/black/compare/22.3.0...22.6.0)
##### Style
- Fix unstable formatting involving `#fmt: skip` and `# fmt:skip` comments (notice the
lack of spaces) ([#2970](https://togithub.com/psf/black/issues/2970))
##### Preview style
- Docstring quotes are no longer moved if it would violate the line length limit ([#3044](https://togithub.com/psf/black/issues/3044))
- Parentheses around return annotations are now managed ([#2990](https://togithub.com/psf/black/issues/2990))
- Remove unnecessary parentheses around awaited objects ([#2991](https://togithub.com/psf/black/issues/2991))
- Remove unnecessary parentheses in `with` statements ([#2926](https://togithub.com/psf/black/issues/2926))
- Remove trailing newlines after code block open ([#3035](https://togithub.com/psf/black/issues/3035))
##### Integrations
- Add `scripts/migrate-black.py` script to ease introduction of Black to a Git project
([#3038](https://togithub.com/psf/black/issues/3038))
##### Output
- Output Python version and implementation as part of `--version` flag ([#2997](https://togithub.com/psf/black/issues/2997))
##### Packaging
- Use `tomli` instead of `tomllib` on Python 3.11 builds where `tomllib` is not
available ([#2987](https://togithub.com/psf/black/issues/2987))
##### Parser
- [PEP 654](https://peps.python.org/pep-0654/#except) syntax (for example,
`except *ExceptionGroup:`) is now supported ([#3016](https://togithub.com/psf/black/issues/3016))
- [PEP 646](https://peps.python.org/pep-0646) syntax (for example,
`Array[Batch, *Shape]` or `def fn(*args: *T) -> None`) is now supported ([#3071](https://togithub.com/psf/black/issues/3071))
##### Vim Plugin
- Fix `strtobool` function. It didn't parse true/on/false/off. ([#3025](https://togithub.com/psf/black/issues/3025))
### [`v22.3.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2230)
[Compare Source](https://togithub.com/psf/black/compare/22.1.0...22.3.0)
##### Preview style
- Code cell separators `#%%` are now standardised to `# %%` ([#2919](https://togithub.com/psf/black/issues/2919))
- Remove unnecessary parentheses from `except` statements ([#2939](https://togithub.com/psf/black/issues/2939))
- Remove unnecessary parentheses from tuple unpacking in `for` loops ([#2945](https://togithub.com/psf/black/issues/2945))
- Avoid magic-trailing-comma in single-element subscripts ([#2942](https://togithub.com/psf/black/issues/2942))
##### Configuration
- Do not format `__pypackages__` directories by default ([#2836](https://togithub.com/psf/black/issues/2836))
- Add support for specifying stable version with `--required-version` ([#2832](https://togithub.com/psf/black/issues/2832)).
- Avoid crashing when the user has no homedir ([#2814](https://togithub.com/psf/black/issues/2814))
- Avoid crashing when md5 is not available ([#2905](https://togithub.com/psf/black/issues/2905))
- Fix handling of directory junctions on Windows ([#2904](https://togithub.com/psf/black/issues/2904))
##### Documentation
- Update pylint config documentation ([#2931](https://togithub.com/psf/black/issues/2931))
##### Integrations
- Move test to disable plugin in Vim/Neovim, which speeds up loading ([#2896](https://togithub.com/psf/black/issues/2896))
##### Output
- In verbose mode, log when *Black* is using user-level config ([#2861](https://togithub.com/psf/black/issues/2861))
##### Packaging
- Fix Black to work with Click 8.1.0 ([#2966](https://togithub.com/psf/black/issues/2966))
- On Python 3.11 and newer, use the standard library's `tomllib` instead of `tomli`
([#2903](https://togithub.com/psf/black/issues/2903))
- `black-primer`, the deprecated internal devtool, has been removed and copied to a
[separate repository](https://togithub.com/cooperlees/black-primer) ([#2924](https://togithub.com/psf/black/issues/2924))
##### Parser
- Black can now parse starred expressions in the target of `for` and `async for`
statements, e.g `for item in *items_1, *items_2: pass` ([#2879](https://togithub.com/psf/black/issues/2879)).
### [`v22.1.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2210)
[Compare Source](https://togithub.com/psf/black/compare/19.10b0...22.1.0)
At long last, *Black* is no longer a beta product! This is the first non-beta release
and the first release covered by our new
[stability policy](https://black.readthedocs.io/en/stable/the_black_code_style/index.html#stability-policy).
##### Highlights
- **Remove Python 2 support** ([#2740](https://togithub.com/psf/black/issues/2740))
- Introduce the `--preview` flag ([#2752](https://togithub.com/psf/black/issues/2752))
##### Style
- Deprecate `--experimental-string-processing` and move the functionality under
`--preview` ([#2789](https://togithub.com/psf/black/issues/2789))
- For stubs, one blank line between class attributes and methods is now kept if there's
at least one pre-existing blank line ([#2736](https://togithub.com/psf/black/issues/2736))
- Black now normalizes string prefix order ([#2297](https://togithub.com/psf/black/issues/2297))
- Remove spaces around power operators if both operands are simple ([#2726](https://togithub.com/psf/black/issues/2726))
- Work around bug that causes unstable formatting in some cases in the presence of the
magic trailing comma ([#2807](https://togithub.com/psf/black/issues/2807))
- Use parentheses for attribute access on decimal float and int literals ([#2799](https://togithub.com/psf/black/issues/2799))
- Don't add whitespace for attribute access on hexadecimal, binary, octal, and complex
literals ([#2799](https://togithub.com/psf/black/issues/2799))
- Treat blank lines in stubs the same inside top-level `if` statements ([#2820](https://togithub.com/psf/black/issues/2820))
- Fix unstable formatting with semicolons and arithmetic expressions ([#2817](https://togithub.com/psf/black/issues/2817))
- Fix unstable formatting around magic trailing comma ([#2572](https://togithub.com/psf/black/issues/2572))
##### Parser
- Fix mapping cases that contain as-expressions, like `case {"key": 1 | 2 as password}`
([#2686](https://togithub.com/psf/black/issues/2686))
- Fix cases that contain multiple top-level as-expressions, like `case 1 as a, 2 as b`
([#2716](https://togithub.com/psf/black/issues/2716))
- Fix call patterns that contain as-expressions with keyword arguments, like
`case Foo(bar=baz as quux)` ([#2749](https://togithub.com/psf/black/issues/2749))
- Tuple unpacking on `return` and `yield` constructs now implies 3.8+ ([#2700](https://togithub.com/psf/black/issues/2700))
- Unparenthesized tuples on annotated assignments (e.g
`values: Tuple[int, ...] = 1, 2, 3`) now implies 3.8+ ([#2708](https://togithub.com/psf/black/issues/2708))
- Fix handling of standalone `match()` or `case()` when there is a trailing newline or a
comment inside of the parentheses. ([#2760](https://togithub.com/psf/black/issues/2760))
- `from __future__ import annotations` statement now implies Python 3.7+ ([#2690](https://togithub.com/psf/black/issues/2690))
##### Performance
- Speed-up the new backtracking parser about 4X in general (enabled when
`--target-version` is set to 3.10 and higher). ([#2728](https://togithub.com/psf/black/issues/2728))
- *Black* is now compiled with [mypyc](https://togithub.com/mypyc/mypyc) for an overall 2x
speed-up. 64-bit Windows, MacOS, and Linux (not including musl) are supported. ([#1009](https://togithub.com/psf/black/issues/1009),
[#2431](https://togithub.com/psf/black/issues/2431))
##### Configuration
- Do not accept bare carriage return line endings in pyproject.toml ([#2408](https://togithub.com/psf/black/issues/2408))
- Add configuration option (`python-cell-magics`) to format cells with custom magics in
Jupyter Notebooks ([#2744](https://togithub.com/psf/black/issues/2744))
- Allow setting custom cache directory on all platforms with environment variable
`BLACK_CACHE_DIR` ([#2739](https://togithub.com/psf/black/issues/2739)).
- Enable Python 3.10+ by default, without any extra need to specify
`--target-version=py310`. ([#2758](https://togithub.com/psf/black/issues/2758))
- Make passing `SRC` or `--code` mandatory and mutually exclusive ([#2804](https://togithub.com/psf/black/issues/2804))
##### Output
- Improve error message for invalid regular expression ([#2678](https://togithub.com/psf/black/issues/2678))
- Improve error message when parsing fails during AST safety check by embedding the
underlying SyntaxError ([#2693](https://togithub.com/psf/black/issues/2693))
- No longer color diff headers white as it's unreadable in light themed terminals
([#2691](https://togithub.com/psf/black/issues/2691))
- Text coloring added in the final statistics ([#2712](https://togithub.com/psf/black/issues/2712))
- Verbose mode also now describes how a project root was discovered and which paths will
be formatted. ([#2526](https://togithub.com/psf/black/issues/2526))
##### Packaging
- All upper version bounds on dependencies have been removed ([#2718](https://togithub.com/psf/black/issues/2718))
- `typing-extensions` is no longer a required dependency in Python 3.10+ ([#2772](https://togithub.com/psf/black/issues/2772))
- Set `click` lower bound to `8.0.0` ([#2791](https://togithub.com/psf/black/issues/2791))
##### Integrations
- Update GitHub action to support containerized runs ([#2748](https://togithub.com/psf/black/issues/2748))
##### Documentation
- Change protocol in pip installation instructions to `https://` ([#2761](https://togithub.com/psf/black/issues/2761))
- Change HTML theme to Furo primarily for its responsive design and mobile support
([#2793](https://togithub.com/psf/black/issues/2793))
- Deprecate the `black-primer` tool ([#2809](https://togithub.com/psf/black/issues/2809))
- Document Python support policy ([#2819](https://togithub.com/psf/black/issues/2819))
Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
[ ] If you want to rebase/retry this PR, check this box
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This PR contains the following updates:
==19.10b0->==22.10.0Release Notes
psf/black
### [`v22.10.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#22100) [Compare Source](https://togithub.com/psf/black/compare/22.8.0...22.10.0) ##### 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](https://togithub.com/psf/black/issues/3281)) ##### Preview style - Fix a crash when formatting some dicts with parenthesis-wrapped long string keys ([#3262](https://togithub.com/psf/black/issues/3262)) ##### Configuration - `.ipynb_checkpoints` directories are now excluded by default ([#3293](https://togithub.com/psf/black/issues/3293)) - Add `--skip-source-first-line` / `-x` option to ignore the first line of source code while formatting ([#3299](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3233)) - Faster compiled wheels are now available for CPython 3.11 ([#3276](https://togithub.com/psf/black/issues/3276)) ##### *Blackd* - Windows style (CRLF) newlines will be preserved ([#3257](https://togithub.com/psf/black/issues/3257)). ##### Integrations - Vim plugin: add flag (`g:black_preview`) to enable/disable the preview style ([#3246](https://togithub.com/psf/black/issues/3246)) - Update GitHub Action to support formatting of Jupyter Notebook files via a `jupyter` option ([#3282](https://togithub.com/psf/black/issues/3282)) - Update GitHub Action to support use of version specifiers (e.g. `<23`) for Black version ([#3265](https://togithub.com/psf/black/issues/3265)) ### [`v22.8.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2280) [Compare Source](https://togithub.com/psf/black/compare/22.6.0...22.8.0) ##### Highlights - Python 3.11 is now supported, except for *blackd* as aiohttp does not support 3.11 as of publishing ([#3234](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3155)) ##### Stable style - Fix an infinite loop when using `# fmt: on/off` in the middle of an expression or code block ([#3158](https://togithub.com/psf/black/issues/3158)) - Fix incorrect handling of `# fmt: skip` on colon (`:`) lines ([#3148](https://togithub.com/psf/black/issues/3148)) - Comments are no longer deleted when a line had spaces removed around power operators ([#2874](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3166)) - `--skip-string-normalization` / `-S` now prevents docstring prefixes from being normalized as expected ([#3168](https://togithub.com/psf/black/issues/3168)) - When using `--skip-magic-trailing-comma` or `-C`, trailing commas are stripped from subscript expressions with more than 1 element ([#3209](https://togithub.com/psf/black/issues/3209)) - Implicitly concatenated strings inside a list, set, or tuple are now wrapped inside parentheses ([#3162](https://togithub.com/psf/black/issues/3162)) - Fix a string merging/split issue when a comment is present in the middle of implicitly concatenated strings on its own line ([#3227](https://togithub.com/psf/black/issues/3227)) ##### *Blackd* - `blackd` now supports enabling the preview style via the `X-Preview` header ([#3217](https://togithub.com/psf/black/issues/3217)) ##### Configuration - Black now uses the presence of debug f-strings to detect target version ([#3215](https://togithub.com/psf/black/issues/3215)) - Fix misdetection of project root and verbose logging of sources in cases involving `--stdin-filename` ([#3216](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/3237)) ##### Documentation - Recommend using BlackConnect in IntelliJ IDEs ([#3150](https://togithub.com/psf/black/issues/3150)) ##### Integrations - Vim plugin: prefix messages with ` Black: ` so it's clear they come from Black ([#3194](https://togithub.com/psf/black/issues/3194)) - Docker: changed to a /opt/venv installation + added to PATH to be available to non-root users ([#3202](https://togithub.com/psf/black/issues/3202)) ##### Output - Change from deprecated `asyncio.get_event_loop()` to create our event loop which removes DeprecationWarning ([#3164](https://togithub.com/psf/black/issues/3164)) - Remove logging from internal `blib2to3` library since it regularly emits error logs about failed caching that can and should be ignored ([#3193](https://togithub.com/psf/black/issues/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](https://togithub.com/psf/black/issues/2874)) ##### Performance - Reduce Black's startup time when formatting a single file by 15-30% ([#3211](https://togithub.com/psf/black/issues/3211)) ### [`v22.6.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2260) [Compare Source](https://togithub.com/psf/black/compare/22.3.0...22.6.0) ##### Style - Fix unstable formatting involving `#fmt: skip` and `# fmt:skip` comments (notice the lack of spaces) ([#2970](https://togithub.com/psf/black/issues/2970)) ##### Preview style - Docstring quotes are no longer moved if it would violate the line length limit ([#3044](https://togithub.com/psf/black/issues/3044)) - Parentheses around return annotations are now managed ([#2990](https://togithub.com/psf/black/issues/2990)) - Remove unnecessary parentheses around awaited objects ([#2991](https://togithub.com/psf/black/issues/2991)) - Remove unnecessary parentheses in `with` statements ([#2926](https://togithub.com/psf/black/issues/2926)) - Remove trailing newlines after code block open ([#3035](https://togithub.com/psf/black/issues/3035)) ##### Integrations - Add `scripts/migrate-black.py` script to ease introduction of Black to a Git project ([#3038](https://togithub.com/psf/black/issues/3038)) ##### Output - Output Python version and implementation as part of `--version` flag ([#2997](https://togithub.com/psf/black/issues/2997)) ##### Packaging - Use `tomli` instead of `tomllib` on Python 3.11 builds where `tomllib` is not available ([#2987](https://togithub.com/psf/black/issues/2987)) ##### Parser - [PEP 654](https://peps.python.org/pep-0654/#except) syntax (for example, `except *ExceptionGroup:`) is now supported ([#3016](https://togithub.com/psf/black/issues/3016)) - [PEP 646](https://peps.python.org/pep-0646) syntax (for example, `Array[Batch, *Shape]` or `def fn(*args: *T) -> None`) is now supported ([#3071](https://togithub.com/psf/black/issues/3071)) ##### Vim Plugin - Fix `strtobool` function. It didn't parse true/on/false/off. ([#3025](https://togithub.com/psf/black/issues/3025)) ### [`v22.3.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2230) [Compare Source](https://togithub.com/psf/black/compare/22.1.0...22.3.0) ##### Preview style - Code cell separators `#%%` are now standardised to `# %%` ([#2919](https://togithub.com/psf/black/issues/2919)) - Remove unnecessary parentheses from `except` statements ([#2939](https://togithub.com/psf/black/issues/2939)) - Remove unnecessary parentheses from tuple unpacking in `for` loops ([#2945](https://togithub.com/psf/black/issues/2945)) - Avoid magic-trailing-comma in single-element subscripts ([#2942](https://togithub.com/psf/black/issues/2942)) ##### Configuration - Do not format `__pypackages__` directories by default ([#2836](https://togithub.com/psf/black/issues/2836)) - Add support for specifying stable version with `--required-version` ([#2832](https://togithub.com/psf/black/issues/2832)). - Avoid crashing when the user has no homedir ([#2814](https://togithub.com/psf/black/issues/2814)) - Avoid crashing when md5 is not available ([#2905](https://togithub.com/psf/black/issues/2905)) - Fix handling of directory junctions on Windows ([#2904](https://togithub.com/psf/black/issues/2904)) ##### Documentation - Update pylint config documentation ([#2931](https://togithub.com/psf/black/issues/2931)) ##### Integrations - Move test to disable plugin in Vim/Neovim, which speeds up loading ([#2896](https://togithub.com/psf/black/issues/2896)) ##### Output - In verbose mode, log when *Black* is using user-level config ([#2861](https://togithub.com/psf/black/issues/2861)) ##### Packaging - Fix Black to work with Click 8.1.0 ([#2966](https://togithub.com/psf/black/issues/2966)) - On Python 3.11 and newer, use the standard library's `tomllib` instead of `tomli` ([#2903](https://togithub.com/psf/black/issues/2903)) - `black-primer`, the deprecated internal devtool, has been removed and copied to a [separate repository](https://togithub.com/cooperlees/black-primer) ([#2924](https://togithub.com/psf/black/issues/2924)) ##### Parser - Black can now parse starred expressions in the target of `for` and `async for` statements, e.g `for item in *items_1, *items_2: pass` ([#2879](https://togithub.com/psf/black/issues/2879)). ### [`v22.1.0`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2210) [Compare Source](https://togithub.com/psf/black/compare/19.10b0...22.1.0) At long last, *Black* is no longer a beta product! This is the first non-beta release and the first release covered by our new [stability policy](https://black.readthedocs.io/en/stable/the_black_code_style/index.html#stability-policy). ##### Highlights - **Remove Python 2 support** ([#2740](https://togithub.com/psf/black/issues/2740)) - Introduce the `--preview` flag ([#2752](https://togithub.com/psf/black/issues/2752)) ##### Style - Deprecate `--experimental-string-processing` and move the functionality under `--preview` ([#2789](https://togithub.com/psf/black/issues/2789)) - For stubs, one blank line between class attributes and methods is now kept if there's at least one pre-existing blank line ([#2736](https://togithub.com/psf/black/issues/2736)) - Black now normalizes string prefix order ([#2297](https://togithub.com/psf/black/issues/2297)) - Remove spaces around power operators if both operands are simple ([#2726](https://togithub.com/psf/black/issues/2726)) - Work around bug that causes unstable formatting in some cases in the presence of the magic trailing comma ([#2807](https://togithub.com/psf/black/issues/2807)) - Use parentheses for attribute access on decimal float and int literals ([#2799](https://togithub.com/psf/black/issues/2799)) - Don't add whitespace for attribute access on hexadecimal, binary, octal, and complex literals ([#2799](https://togithub.com/psf/black/issues/2799)) - Treat blank lines in stubs the same inside top-level `if` statements ([#2820](https://togithub.com/psf/black/issues/2820)) - Fix unstable formatting with semicolons and arithmetic expressions ([#2817](https://togithub.com/psf/black/issues/2817)) - Fix unstable formatting around magic trailing comma ([#2572](https://togithub.com/psf/black/issues/2572)) ##### Parser - Fix mapping cases that contain as-expressions, like `case {"key": 1 | 2 as password}` ([#2686](https://togithub.com/psf/black/issues/2686)) - Fix cases that contain multiple top-level as-expressions, like `case 1 as a, 2 as b` ([#2716](https://togithub.com/psf/black/issues/2716)) - Fix call patterns that contain as-expressions with keyword arguments, like `case Foo(bar=baz as quux)` ([#2749](https://togithub.com/psf/black/issues/2749)) - Tuple unpacking on `return` and `yield` constructs now implies 3.8+ ([#2700](https://togithub.com/psf/black/issues/2700)) - Unparenthesized tuples on annotated assignments (e.g `values: Tuple[int, ...] = 1, 2, 3`) now implies 3.8+ ([#2708](https://togithub.com/psf/black/issues/2708)) - Fix handling of standalone `match()` or `case()` when there is a trailing newline or a comment inside of the parentheses. ([#2760](https://togithub.com/psf/black/issues/2760)) - `from __future__ import annotations` statement now implies Python 3.7+ ([#2690](https://togithub.com/psf/black/issues/2690)) ##### Performance - Speed-up the new backtracking parser about 4X in general (enabled when `--target-version` is set to 3.10 and higher). ([#2728](https://togithub.com/psf/black/issues/2728)) - *Black* is now compiled with [mypyc](https://togithub.com/mypyc/mypyc) for an overall 2x speed-up. 64-bit Windows, MacOS, and Linux (not including musl) are supported. ([#1009](https://togithub.com/psf/black/issues/1009), [#2431](https://togithub.com/psf/black/issues/2431)) ##### Configuration - Do not accept bare carriage return line endings in pyproject.toml ([#2408](https://togithub.com/psf/black/issues/2408)) - Add configuration option (`python-cell-magics`) to format cells with custom magics in Jupyter Notebooks ([#2744](https://togithub.com/psf/black/issues/2744)) - Allow setting custom cache directory on all platforms with environment variable `BLACK_CACHE_DIR` ([#2739](https://togithub.com/psf/black/issues/2739)). - Enable Python 3.10+ by default, without any extra need to specify `--target-version=py310`. ([#2758](https://togithub.com/psf/black/issues/2758)) - Make passing `SRC` or `--code` mandatory and mutually exclusive ([#2804](https://togithub.com/psf/black/issues/2804)) ##### Output - Improve error message for invalid regular expression ([#2678](https://togithub.com/psf/black/issues/2678)) - Improve error message when parsing fails during AST safety check by embedding the underlying SyntaxError ([#2693](https://togithub.com/psf/black/issues/2693)) - No longer color diff headers white as it's unreadable in light themed terminals ([#2691](https://togithub.com/psf/black/issues/2691)) - Text coloring added in the final statistics ([#2712](https://togithub.com/psf/black/issues/2712)) - Verbose mode also now describes how a project root was discovered and which paths will be formatted. ([#2526](https://togithub.com/psf/black/issues/2526)) ##### Packaging - All upper version bounds on dependencies have been removed ([#2718](https://togithub.com/psf/black/issues/2718)) - `typing-extensions` is no longer a required dependency in Python 3.10+ ([#2772](https://togithub.com/psf/black/issues/2772)) - Set `click` lower bound to `8.0.0` ([#2791](https://togithub.com/psf/black/issues/2791)) ##### Integrations - Update GitHub action to support containerized runs ([#2748](https://togithub.com/psf/black/issues/2748)) ##### Documentation - Change protocol in pip installation instructions to `https://` ([#2761](https://togithub.com/psf/black/issues/2761)) - Change HTML theme to Furo primarily for its responsive design and mobile support ([#2793](https://togithub.com/psf/black/issues/2793)) - Deprecate the `black-primer` tool ([#2809](https://togithub.com/psf/black/issues/2809)) - Document Python support policy ([#2819](https://togithub.com/psf/black/issues/2819))Configuration
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