All patches and comments are welcome. Please squash your changes to logical
commits before using git-format-patch and git-send-email to
patches@git.madduck.net.
If you'd read over the Git project's submission guidelines and adhered to them,
I'd be especially grateful.
7 - Remove dependency on aiohttp-cors (#2500)
8 - Bump required aiohttp version to 3.7.4 (#2509)
14 - Fix missing modules in self-contained binaries (#2466)
15 - Fix missing toml extra used during installation (#2475)
21 - Add support for formatting Jupyter Notebook files (#2357)
22 - Move from `appdirs` dependency to `platformdirs` (#2375)
23 - Present a more user-friendly error if .gitignore is invalid (#2414)
24 - The failsafe for accidentally added backslashes in f-string expressions has been
25 hardened to handle more edge cases during quote normalization (#2437)
26 - Avoid changing a function return type annotation's type to a tuple by adding a
27 trailing comma (#2384)
28 - Parsing support has been added for unparenthesized walruses in set literals, set
29 comprehensions, and indices (#2447).
30 - Pin `setuptools-scm` build-time dependency version (#2457)
31 - Exclude typing-extensions version 3.10.0.1 due to it being broken on Python 3.10
36 - Replace sys.exit(-1) with raise ImportError as it plays more nicely with tools that
37 scan installed packages (#2440)
41 - The provided pre-commit hooks no longer specify `language_version` to avoid overriding
42 `default_language_version` (#2430)
48 - Configuration files using TOML features higher than spec v0.5.0 are now supported
50 - Add primer support and test for code piped into black via STDIN (#2315)
51 - Fix internal error when `FORCE_OPTIONAL_PARENTHESES` feature is enabled (#2332)
52 - Accept empty stdin (#2346)
53 - Provide a more useful error when parsing fails during AST safety checks (#2304)
57 - Add new `latest_release` tag automation to follow latest black release on docker
62 - The vim plugin now searches upwards from the directory containing the current buffer
63 instead of the current working directory for pyproject.toml. (#1871)
64 - The vim plugin now reads the correct string normalization option in pyproject.toml
66 - The vim plugin no longer crashes Black when there's boolean values in pyproject.toml
73 - Fix failure caused by `fmt: skip` and indentation (#2281)
74 - Account for += assignment when deciding whether to split string (#2312)
75 - Correct max string length calculation when there are string operators (#2292)
76 - Fixed option usage when using the `--code` flag (#2259)
77 - Do not call `uvloop.install()` when _Black_ is used as a library (#2303)
78 - Added `--required-version` option to require a specific version to be running (#2300)
79 - Fix incorrect custom breakpoint indices when string group contains fake f-strings
81 - Fix regression where `R` prefixes would be lowercased for docstrings (#2285)
82 - Fix handling of named escapes (`\N{...}`) when `--experimental-string-processing` is
87 - The official Black action now supports choosing what version to use, and supports the
94 - A space is no longer inserted into empty docstrings (#2249)
95 - Fix handling of .gitignore files containing non-ASCII characters on Windows (#2229)
96 - Respect `.gitignore` files in all levels, not only `root/.gitignore` file (apply
97 `.gitignore` rules like `git` does) (#2225)
98 - Restored compatibility with Click 8.0 on Python 3.6 when LANG=C used (#2227)
99 - Add extra uvloop install + import support if in python env (#2258)
100 - Fix --experimental-string-processing crash when matching parens are not found (#2283)
101 - Make sure to split lines that start with a string operator (#2286)
102 - Fix regular expression that black uses to identify f-expressions (#2287)
106 - Add a lower bound for the `aiohttp-cors` dependency. Only 0.4.0 or higher is
111 - Release self-contained x86_64 MacOS binaries as part of the GitHub release pipeline
113 - Always build binaries with the latest available Python (#2260)
117 - Add discussion of magic comments to FAQ page (#2272)
118 - `--experimental-string-processing` will be enabled by default in the future (#2273)
119 - Fix typos discovered by codespell (#2228)
120 - Fix Vim plugin installation instructions. (#2235)
121 - Add new Frequently Asked Questions page (#2247)
122 - Fix encoding + symlink issues preventing proper build on Windows (#2262)
128 - Refactor `src/black/__init__.py` into many files (#2206)
132 - Replaced all remaining references to the
133 [`master`](https://github.com/psf/black/tree/main) branch with the
134 [`main`](https://github.com/psf/black/tree/main) branch. Some additional changes in
135 the source code were also made. (#2210)
136 - Sigificantly reorganized the documentation to make much more sense. Check them out by
137 heading over to [the stable docs on RTD](https://black.readthedocs.io/en/stable/).
144 - Set `--pyi` mode if `--stdin-filename` ends in `.pyi` (#2169)
145 - Stop detecting target version as Python 3.9+ with pre-PEP-614 decorators that are
146 being called but with no arguments (#2182)
150 - Add `--no-diff` to black-primer to suppress formatting changes (#2187)
156 - Fix crash if the user configuration directory is inaccessible. (#2158)
159 [circumstances](https://github.com/psf/black/blob/master/docs/the_black_code_style.md#pragmatism)
160 in which _Black_ may change the AST (#2159)
162 - Allow `.gitignore` rules to be overridden by specifying `exclude` in `pyproject.toml`
163 or on the command line. (#2170)
167 - Install `primer.json` (used by `black-primer` by default) with black. (#2154)
173 - Fix crash on docstrings ending with "\\ ". (#2142)
175 - Fix crash when atypical whitespace is cleaned out of dostrings (#2120)
177 - Reflect the `--skip-magic-trailing-comma` and `--experimental-string-processing` flags
178 in the name of the cache file. Without this fix, changes in these flags would not take
179 effect if the cache had already been populated. (#2131)
181 - Don't remove necessary parentheses from assignment expression containing assert /
182 return statements. (#2143)
186 - Bump pathspec to >= 0.8.1 to solve invalid .gitignore exclusion handling
192 - Fixed a rare but annoying formatting instability created by the combination of
193 optional trailing commas inserted by `Black` and optional parentheses looking at
194 pre-existing "magic" trailing commas. This fixes issue #1629 and all of its many many
197 - `Black` now processes one-line docstrings by stripping leading and trailing spaces,
198 and adding a padding space when needed to break up """". (#1740)
200 - `Black` now cleans up leading non-breaking spaces in comments (#2092)
202 - `Black` now respects `--skip-string-normalization` when normalizing multiline
203 docstring quotes (#1637)
205 - `Black` no longer removes all empty lines between non-function code and decorators
206 when formatting typing stubs. Now `Black` enforces a single empty line. (#1646)
208 - `Black` no longer adds an incorrect space after a parenthesized assignment expression
209 in if/while statements (#1655)
211 - Added `--skip-magic-trailing-comma` / `-C` to avoid using trailing commas as a reason
212 to split lines (#1824)
214 - fixed a crash when PWD=/ on POSIX (#1631)
216 - fixed "I/O operation on closed file" when using --diff (#1664)
218 - Prevent coloured diff output being interleaved with multiple files (#1673)
220 - Added support for PEP 614 relaxed decorator syntax on python 3.9 (#1711)
222 - Added parsing support for unparenthesized tuples and yield expressions in annotated
225 - added `--extend-exclude` argument (PR #2005)
227 - speed up caching by avoiding pathlib (#1950)
229 - `--diff` correctly indicates when a file doesn't end in a newline (#1662)
231 - Added `--stdin-filename` argument to allow stdin to respect `--force-exclude` rules
234 - Lines ending with `fmt: skip` will now be not formatted (#1800)
236 - PR #2053: Black no longer relies on typed-ast for Python 3.8 and higher
238 - PR #2053: Python 2 support is now optional, install with
239 `python3 -m pip install black[python2]` to maintain support.
241 - Exclude `venv` directory by default (#1683)
243 - Fixed "Black produced code that is not equivalent to the source" when formatting
244 Python 2 docstrings (#2037)
248 - Self-contained native _Black_ binaries are now provided for releases via GitHub
255 - explicitly depend on Click 7.1.2 or newer as `Black` no longer works with versions
262 - re-implemented support for explicit trailing commas: now it works consistently within
263 any bracket pair, including nested structures (#1288 and duplicates)
265 - `Black` now reindents docstrings when reindenting code around it (#1053)
267 - `Black` now shows colored diffs (#1266)
269 - `Black` is now packaged using 'py3' tagged wheels (#1388)
271 - `Black` now supports Python 3.8 code, e.g. star expressions in return statements
274 - `Black` no longer normalizes capital R-string prefixes as those have a
275 community-accepted meaning (#1244)
277 - `Black` now uses exit code 2 when specified configuration file doesn't exit (#1361)
279 - `Black` now works on AWS Lambda (#1141)
281 - added `--force-exclude` argument (#1032)
283 - removed deprecated `--py36` option (#1236)
285 - fixed `--diff` output when EOF is encountered (#526)
287 - fixed `# fmt: off` handling around decorators (#560)
289 - fixed unstable formatting with some `# type: ignore` comments (#1113)
291 - fixed invalid removal on organizing brackets followed by indexing (#1575)
293 - introduced `black-primer`, a CI tool that allows us to run regression tests against
294 existing open source users of Black (#1402)
296 - introduced property-based fuzzing to our test suite based on Hypothesis and
297 Hypothersmith (#1566)
299 - implemented experimental and disabled by default long string rewrapping (#1132),
300 hidden under a `--experimental-string-processing` flag while it's being worked on;
301 this is an undocumented and unsupported feature, you lose Internet points for
302 depending on it (#1609)
306 - prefer virtualenv packages over global packages (#1383)
310 - added support for PEP 572 assignment expressions (#711)
312 - added support for PEP 570 positional-only arguments (#943)
314 - added support for async generators (#593)
316 - added support for pre-splitting collections by putting an explicit trailing comma
319 - added `black -c` as a way to format code passed from the command line (#761)
321 - --safe now works with Python 2 code (#840)
323 - fixed grammar selection for Python 2-specific code (#765)
325 - fixed feature detection for trailing commas in function definitions and call sites
328 - `# fmt: off`/`# fmt: on` comment pairs placed multiple times within the same block of
329 code now behave correctly (#1005)
331 - _Black_ no longer crashes on Windows machines with more than 61 cores (#838)
333 - _Black_ no longer crashes on standalone comments prepended with a backslash (#767)
335 - _Black_ no longer crashes on `from` ... `import` blocks with comments (#829)
337 - _Black_ no longer crashes on Python 3.7 on some platform configurations (#494)
339 - _Black_ no longer fails on comments in from-imports (#671)
341 - _Black_ no longer fails when the file starts with a backslash (#922)
343 - _Black_ no longer merges regular comments with type comments (#1027)
345 - _Black_ no longer splits long lines that contain type comments (#997)
347 - removed unnecessary parentheses around `yield` expressions (#834)
349 - added parentheses around long tuples in unpacking assignments (#832)
351 - added parentheses around complex powers when they are prefixed by a unary operator
354 - fixed bug that led _Black_ format some code with a line length target of 1 (#762)
356 - _Black_ no longer introduces quotes in f-string subexpressions on string boundaries
359 - if _Black_ puts parenthesis around a single expression, it moves comments to the
360 wrapped expression instead of after the brackets (#872)
362 - `blackd` now returns the version of _Black_ in the response headers (#1013)
364 - `blackd` can now output the diff of formats on source code when the `X-Diff` header is
369 - new option `--target-version` to control which Python versions _Black_-formatted code
372 - deprecated `--py36` (use `--target-version=py36` instead) (#724)
374 - _Black_ no longer normalizes numeric literals to include `_` separators (#696)
376 - long `del` statements are now split into multiple lines (#698)
378 - type comments are no longer mangled in function signatures
380 - improved performance of formatting deeply nested data structures (#509)
382 - _Black_ now properly formats multiple files in parallel on Windows (#632)
384 - _Black_ now creates cache files atomically which allows it to be used in parallel
385 pipelines (like `xargs -P8`) (#673)
387 - _Black_ now correctly indents comments in files that were previously formatted with
390 - `blackd` now supports CORS (#622)
394 - numeric literals are now formatted by _Black_ (#452, #461, #464, #469):
396 - numeric literals are normalized to include `_` separators on Python 3.6+ code
398 - added `--skip-numeric-underscore-normalization` to disable the above behavior and
399 leave numeric underscores as they were in the input
401 - code with `_` in numeric literals is recognized as Python 3.6+
403 - most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`)
405 - hexadecimal digits are always uppercased (e.g. `0xBADC0DE`)
407 - added `blackd`, see
408 [its documentation](https://github.com/psf/black/blob/18.9b0/README.md#blackd) for
411 - adjacent string literals are now correctly split into multiple lines (#463)
413 - trailing comma is now added to single imports that don't fit on a line (#250)
415 - cache is now populated when `--check` is successful for a file which speeds up
416 consecutive checks of properly formatted unmodified files (#448)
418 - whitespace at the beginning of the file is now removed (#399)
420 - fixed mangling [pweave](http://mpastell.com/pweave/) and
421 [Spyder IDE](https://www.spyder-ide.org/) special comments (#532)
423 - fixed unstable formatting when unpacking big tuples (#267)
425 - fixed parsing of `__future__` imports with renames (#389)
427 - fixed scope of `# fmt: off` when directly preceding `yield` and other nodes (#385)
429 - fixed formatting of lambda expressions with default arguments (#468)
431 - fixed `async for` statements: _Black_ no longer breaks them into separate lines (#372)
433 - note: the Vim plugin stopped registering `,=` as a default chord as it turned out to
438 - hotfix: don't freeze when multiple comments directly precede `# fmt: off` (#371)
442 - typing stub files (`.pyi`) now have blank lines added after constants (#340)
444 - `# fmt: off` and `# fmt: on` are now much more dependable:
446 - they now work also within bracket pairs (#329)
448 - they now correctly work across function/class boundaries (#335)
450 - they now work when an indentation block starts with empty lines or misaligned
453 - made Click not fail on invalid environments; note that Click is right but the
454 likelihood we'll need to access non-ASCII file paths when dealing with Python source
457 - fixed improper formatting of f-strings with quotes inside interpolated expressions
460 - fixed unnecessary slowdown when long list literals where found in a file
462 - fixed unnecessary slowdown on AST nodes with very many siblings
464 - fixed cannibalizing backslashes during string normalization
466 - fixed a crash due to symbolic links pointing outside of the project directory (#338)
470 - added `--config` (#65)
472 - added `-h` equivalent to `--help` (#316)
474 - fixed improper unmodified file caching when `-S` was used
476 - fixed extra space in string unpacking (#305)
478 - fixed formatting of empty triple quoted strings (#313)
480 - fixed unnecessary slowdown in comment placement calculation on lines without comments
484 - hotfix: don't output human-facing information on stdout (#299)
486 - hotfix: don't output cake emoji on non-zero return code (#300)
490 - added `--include` and `--exclude` (#270)
492 - added `--skip-string-normalization` (#118)
494 - added `--verbose` (#283)
496 - the header output in `--diff` now actually conforms to the unified diff spec
498 - fixed long trivial assignments being wrapped in unnecessary parentheses (#273)
500 - fixed unnecessary parentheses when a line contained multiline strings (#232)
502 - fixed stdin handling not working correctly if an old version of Click was used (#276)
504 - _Black_ now preserves line endings when formatting a file in place (#258)
508 - added `--pyi` (#249)
510 - added `--py36` (#249)
512 - Python grammar pickle caches are stored with the formatting caches, making _Black_
513 work in environments where site-packages is not user-writable (#192)
515 - _Black_ now enforces a PEP 257 empty line after a class-level docstring (and/or
516 fields) and the first method
518 - fixed invalid code produced when standalone comments were present in a trailer that
519 was omitted from line splitting on a large expression (#237)
521 - fixed optional parentheses being removed within `# fmt: off` sections (#224)
523 - fixed invalid code produced when stars in very long imports were incorrectly wrapped
524 in optional parentheses (#234)
526 - fixed unstable formatting when inline comments were moved around in a trailer that was
527 omitted from line splitting on a large expression (#238)
529 - fixed extra empty line between a class declaration and the first method if no class
530 docstring or fields are present (#219)
532 - fixed extra empty line between a function signature and an inner function or inner
537 - call chains are now formatted according to the
538 [fluent interfaces](https://en.wikipedia.org/wiki/Fluent_interface) style (#67)
540 - data structure literals (tuples, lists, dictionaries, and sets) are now also always
541 exploded like imports when they don't fit in a single line (#152)
543 - slices are now formatted according to PEP 8 (#178)
545 - parentheses are now also managed automatically on the right-hand side of assignments
546 and return statements (#140)
548 - math operators now use their respective priorities for delimiting multiline
551 - optional parentheses are now omitted on expressions that start or end with a bracket
552 and only contain a single operator (#177)
554 - empty parentheses in a class definition are now removed (#145, #180)
556 - string prefixes are now standardized to lowercase and `u` is removed on Python 3.6+
557 only code and Python 2.7+ code with the `unicode_literals` future import (#188, #198,
560 - typing stub files (`.pyi`) are now formatted in a style that is consistent with PEP
563 - progress when reformatting many files is now reported incrementally
565 - fixed trailers (content with brackets) being unnecessarily exploded into their own
566 lines after a dedented closing bracket (#119)
568 - fixed an invalid trailing comma sometimes left in imports (#185)
570 - fixed non-deterministic formatting when multiple pairs of removable parentheses were
573 - fixed multiline strings being unnecessarily wrapped in optional parentheses in long
576 - fixed not splitting long from-imports with only a single name
578 - fixed Python 3.6+ file discovery by also looking at function calls with unpacking.
579 This fixed non-deterministic formatting if trailing commas where used both in function
580 signatures with stars and function calls with stars but the former would be
581 reformatted to a single line.
583 - fixed crash on dealing with optional parentheses (#193)
585 - fixed "is", "is not", "in", and "not in" not considered operators for splitting
588 - fixed crash when dead symlinks where encountered
592 - don't populate the cache on `--check` (#175)
596 - added a "cache"; files already reformatted that haven't changed on disk won't be
597 reformatted again (#109)
599 - `--check` and `--diff` are no longer mutually exclusive (#149)
601 - generalized star expression handling, including double stars; this fixes
602 multiplication making expressions "unsafe" for trailing commas (#132)
604 - _Black_ no longer enforces putting empty lines behind control flow statements (#90)
606 - _Black_ now splits imports like "Mode 3 + trailing comma" of isort (#127)
608 - fixed comment indentation when a standalone comment closes a block (#16, #32)
610 - fixed standalone comments receiving extra empty lines if immediately preceding a
611 class, def, or decorator (#56, #154)
613 - fixed `--diff` not showing entire path (#130)
615 - fixed parsing of complex expressions after star and double stars in function calls
618 - fixed invalid splitting on comma in lambda arguments (#133)
620 - fixed missing splits of ternary expressions (#141)
624 - fixed parsing of unaligned standalone comments (#99, #112)
626 - fixed placement of dictionary unpacking inside dictionary literals (#111)
628 - Vim plugin now works on Windows, too
630 - fixed unstable formatting when encountering unnecessarily escaped quotes in a string
635 - added `--quiet` (#78)
637 - added automatic parentheses management (#4)
639 - added [pre-commit](https://pre-commit.com) integration (#103, #104)
641 - fixed reporting on `--check` with multiple files (#101, #102)
643 - fixed removing backslash escapes from raw strings (#100, #105)
647 - added `--diff` (#87)
649 - add line breaks before all delimiters, except in cases like commas, to better comply
652 - standardize string literals to use double quotes (almost) everywhere (#75)
654 - fixed handling of standalone comments within nested bracketed expressions; _Black_
655 will no longer produce super long lines or put all standalone comments at the end of
658 - fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace
661 - fixed 18.3a4 regression: `# yapf: disable` usage as trailing comment would cause
662 _Black_ to not emit the rest of the file (#95)
664 - when CTRL+C is pressed while formatting many files, _Black_ no longer freaks out with
665 a flurry of asyncio-related exceptions
667 - only allow up to two empty lines on module level and only single empty lines within
672 - `# fmt: off` and `# fmt: on` are implemented (#5)
674 - automatic detection of deprecated Python 2 forms of print statements and exec
675 statements in the formatted file (#49)
677 - use proper spaces for complex expressions in default values of typed function
680 - only return exit code 1 when --check is used (#50)
682 - don't remove single trailing commas from square bracket indexing (#59)
684 - don't omit whitespace if the previous factor leaf wasn't a math operator (#55)
686 - omit extra space in kwarg unpacking if it's the first argument (#46)
688 - omit extra space in
689 [Sphinx auto-attribute comments](http://www.sphinx-doc.org/en/stable/ext/autodoc.html#directive-autoattribute)
694 - don't remove single empty lines outside of bracketed expressions (#19)
696 - added ability to pipe formatting from stdin to stdin (#25)
698 - restored ability to format code with legacy usage of `async` as a name (#20, #42)
700 - even better handling of numpy-style array indexing (#33, again)
704 - changed positioning of binary operators to occur at beginning of lines instead of at
706 [a recent change to PEP 8](https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b)
709 - ignore empty bracket pairs while splitting. This avoids very weirdly looking
710 formattings (#34, #35)
712 - remove a trailing comma if there is a single argument to a call
714 - if top level functions were separated by a comment, don't put four empty lines after
717 - fixed unstable formatting of newlines with imports
719 - fixed unintentional folding of post scriptum standalone comments into last statement
720 if it was a simple statement (#18, #28)
722 - fixed missing space in numpy-style array indexing (#33)
724 - fixed spurious space after star-based unary expressions (#31)
730 - only put trailing commas in function signatures and calls if it's safe to do so. If
731 the file is Python 3.6+ it's always safe, otherwise only safe if there are no `*args`
732 or `**kwargs` used in the signature or call. (#8)
734 - fixed invalid spacing of dots in relative imports (#6, #13)
736 - fixed invalid splitting after comma on unpacked variables in for-loops (#23)
738 - fixed spurious space in parenthesized set expressions (#7)
740 - fixed spurious space after opening parentheses and in default arguments (#14, #17)
742 - fixed spurious space after unary operators when the operand was a complex expression
747 - first published version, Happy 🍰 Day 2018!
751 - date-versioned (see: <https://calver.org/>)