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.
1 [//]: # "NOTE: THIS FILE WAS AUTOGENERATED FROM CHANGES.md"
9 - re-implemented support for explicit trailing commas: now it works consistently within
10 any bracket pair, including nested structures (#1288 and duplicates)
12 - `Black` now reindents docstrings when reindenting code around it (#1053)
14 - `Black` now shows colored diffs (#1266)
16 - `Black` is now packaged using 'py3' tagged wheels (#1388)
18 - `Black` now supports Python 3.8 code, e.g. star expressions in return statements
21 - `Black` no longer normalizes capital R-string prefixes as those have a
22 community-accepted meaning (#1244)
24 - `Black` now uses exit code 2 when specified configuration file doesn't exit (#1361)
26 - `Black` now works on AWS Lambda (#1141)
28 - added `--force-exclude` argument (#1032)
30 - removed deprecated `--py36` option (#1236)
32 - fixed `--diff` output when EOF is encountered (#526)
34 - fixed `# fmt: off` handling around decorators (#560)
36 - fixed unstable formatting with some `# type: ignore` comments (#1113)
38 - fixed invalid removal on organizing brackets followed by indexing (#1575)
40 - introduced `black-primer`, a CI tool that allows us to run regression tests against
41 existing open source users of Black (#1402)
43 - introduced property-based fuzzing to our test suite based on Hypothesis and
46 - implemented experimental and disabled by default long string rewrapping (#1132),
47 hidden under a `--experimental-string-processing` flag while it's being worked on;
48 this is an undocumented and unsupported feature, you lose Internet points for
49 depending on it (#1609)
53 - prefer virtualenv packages over global packages (#1383)
57 - added support for PEP 572 assignment expressions (#711)
59 - added support for PEP 570 positional-only arguments (#943)
61 - added support for async generators (#593)
63 - added support for pre-splitting collections by putting an explicit trailing comma
66 - added `black -c` as a way to format code passed from the command line (#761)
68 - --safe now works with Python 2 code (#840)
70 - fixed grammar selection for Python 2-specific code (#765)
72 - fixed feature detection for trailing commas in function definitions and call sites
75 - `# fmt: off`/`# fmt: on` comment pairs placed multiple times within the same block of
76 code now behave correctly (#1005)
78 - _Black_ no longer crashes on Windows machines with more than 61 cores (#838)
80 - _Black_ no longer crashes on standalone comments prepended with a backslash (#767)
82 - _Black_ no longer crashes on `from` ... `import` blocks with comments (#829)
84 - _Black_ no longer crashes on Python 3.7 on some platform configurations (#494)
86 - _Black_ no longer fails on comments in from-imports (#671)
88 - _Black_ no longer fails when the file starts with a backslash (#922)
90 - _Black_ no longer merges regular comments with type comments (#1027)
92 - _Black_ no longer splits long lines that contain type comments (#997)
94 - removed unnecessary parentheses around `yield` expressions (#834)
96 - added parentheses around long tuples in unpacking assignments (#832)
98 - added parentheses around complex powers when they are prefixed by a unary operator
101 - fixed bug that led _Black_ format some code with a line length target of 1 (#762)
103 - _Black_ no longer introduces quotes in f-string subexpressions on string boundaries
106 - if _Black_ puts parenthesis around a single expression, it moves comments to the
107 wrapped expression instead of after the brackets (#872)
109 - `blackd` now returns the version of _Black_ in the response headers (#1013)
111 - `blackd` can now output the diff of formats on source code when the `X-Diff` header is
116 - new option `--target-version` to control which Python versions _Black_-formatted code
119 - deprecated `--py36` (use `--target-version=py36` instead) (#724)
121 - _Black_ no longer normalizes numeric literals to include `_` separators (#696)
123 - long `del` statements are now split into multiple lines (#698)
125 - type comments are no longer mangled in function signatures
127 - improved performance of formatting deeply nested data structures (#509)
129 - _Black_ now properly formats multiple files in parallel on Windows (#632)
131 - _Black_ now creates cache files atomically which allows it to be used in parallel
132 pipelines (like `xargs -P8`) (#673)
134 - _Black_ now correctly indents comments in files that were previously formatted with
137 - `blackd` now supports CORS (#622)
141 - numeric literals are now formatted by _Black_ (#452, #461, #464, #469):
143 - numeric literals are normalized to include `_` separators on Python 3.6+ code
145 - added `--skip-numeric-underscore-normalization` to disable the above behavior and
146 leave numeric underscores as they were in the input
148 - code with `_` in numeric literals is recognized as Python 3.6+
150 - most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`)
152 - hexadecimal digits are always uppercased (e.g. `0xBADC0DE`)
154 - added `blackd`, see [its documentation](#blackd) for more info (#349)
156 - adjacent string literals are now correctly split into multiple lines (#463)
158 - trailing comma is now added to single imports that don't fit on a line (#250)
160 - cache is now populated when `--check` is successful for a file which speeds up
161 consecutive checks of properly formatted unmodified files (#448)
163 - whitespace at the beginning of the file is now removed (#399)
165 - fixed mangling [pweave](http://mpastell.com/pweave/) and
166 [Spyder IDE](https://www.spyder-ide.org/) special comments (#532)
168 - fixed unstable formatting when unpacking big tuples (#267)
170 - fixed parsing of `__future__` imports with renames (#389)
172 - fixed scope of `# fmt: off` when directly preceding `yield` and other nodes (#385)
174 - fixed formatting of lambda expressions with default arguments (#468)
176 - fixed `async for` statements: _Black_ no longer breaks them into separate lines (#372)
178 - note: the Vim plugin stopped registering `,=` as a default chord as it turned out to
183 - hotfix: don't freeze when multiple comments directly precede `# fmt: off` (#371)
187 - typing stub files (`.pyi`) now have blank lines added after constants (#340)
189 - `# fmt: off` and `# fmt: on` are now much more dependable:
191 - they now work also within bracket pairs (#329)
193 - they now correctly work across function/class boundaries (#335)
195 - they now work when an indentation block starts with empty lines or misaligned
198 - made Click not fail on invalid environments; note that Click is right but the
199 likelihood we'll need to access non-ASCII file paths when dealing with Python source
202 - fixed improper formatting of f-strings with quotes inside interpolated expressions
205 - fixed unnecessary slowdown when long list literals where found in a file
207 - fixed unnecessary slowdown on AST nodes with very many siblings
209 - fixed cannibalizing backslashes during string normalization
211 - fixed a crash due to symbolic links pointing outside of the project directory (#338)
215 - added `--config` (#65)
217 - added `-h` equivalent to `--help` (#316)
219 - fixed improper unmodified file caching when `-S` was used
221 - fixed extra space in string unpacking (#305)
223 - fixed formatting of empty triple quoted strings (#313)
225 - fixed unnecessary slowdown in comment placement calculation on lines without comments
229 - hotfix: don't output human-facing information on stdout (#299)
231 - hotfix: don't output cake emoji on non-zero return code (#300)
235 - added `--include` and `--exclude` (#270)
237 - added `--skip-string-normalization` (#118)
239 - added `--verbose` (#283)
241 - the header output in `--diff` now actually conforms to the unified diff spec
243 - fixed long trivial assignments being wrapped in unnecessary parentheses (#273)
245 - fixed unnecessary parentheses when a line contained multiline strings (#232)
247 - fixed stdin handling not working correctly if an old version of Click was used (#276)
249 - _Black_ now preserves line endings when formatting a file in place (#258)
253 - added `--pyi` (#249)
255 - added `--py36` (#249)
257 - Python grammar pickle caches are stored with the formatting caches, making _Black_
258 work in environments where site-packages is not user-writable (#192)
260 - _Black_ now enforces a PEP 257 empty line after a class-level docstring (and/or
261 fields) and the first method
263 - fixed invalid code produced when standalone comments were present in a trailer that
264 was omitted from line splitting on a large expression (#237)
266 - fixed optional parentheses being removed within `# fmt: off` sections (#224)
268 - fixed invalid code produced when stars in very long imports were incorrectly wrapped
269 in optional parentheses (#234)
271 - fixed unstable formatting when inline comments were moved around in a trailer that was
272 omitted from line splitting on a large expression (#238)
274 - fixed extra empty line between a class declaration and the first method if no class
275 docstring or fields are present (#219)
277 - fixed extra empty line between a function signature and an inner function or inner
282 - call chains are now formatted according to the
283 [fluent interfaces](https://en.wikipedia.org/wiki/Fluent_interface) style (#67)
285 - data structure literals (tuples, lists, dictionaries, and sets) are now also always
286 exploded like imports when they don't fit in a single line (#152)
288 - slices are now formatted according to PEP 8 (#178)
290 - parentheses are now also managed automatically on the right-hand side of assignments
291 and return statements (#140)
293 - math operators now use their respective priorities for delimiting multiline
296 - optional parentheses are now omitted on expressions that start or end with a bracket
297 and only contain a single operator (#177)
299 - empty parentheses in a class definition are now removed (#145, #180)
301 - string prefixes are now standardized to lowercase and `u` is removed on Python 3.6+
302 only code and Python 2.7+ code with the `unicode_literals` future import (#188, #198,
305 - typing stub files (`.pyi`) are now formatted in a style that is consistent with PEP
308 - progress when reformatting many files is now reported incrementally
310 - fixed trailers (content with brackets) being unnecessarily exploded into their own
311 lines after a dedented closing bracket (#119)
313 - fixed an invalid trailing comma sometimes left in imports (#185)
315 - fixed non-deterministic formatting when multiple pairs of removable parentheses were
318 - fixed multiline strings being unnecessarily wrapped in optional parentheses in long
321 - fixed not splitting long from-imports with only a single name
323 - fixed Python 3.6+ file discovery by also looking at function calls with unpacking.
324 This fixed non-deterministic formatting if trailing commas where used both in function
325 signatures with stars and function calls with stars but the former would be
326 reformatted to a single line.
328 - fixed crash on dealing with optional parentheses (#193)
330 - fixed "is", "is not", "in", and "not in" not considered operators for splitting
333 - fixed crash when dead symlinks where encountered
337 - don't populate the cache on `--check` (#175)
341 - added a "cache"; files already reformatted that haven't changed on disk won't be
342 reformatted again (#109)
344 - `--check` and `--diff` are no longer mutually exclusive (#149)
346 - generalized star expression handling, including double stars; this fixes
347 multiplication making expressions "unsafe" for trailing commas (#132)
349 - _Black_ no longer enforces putting empty lines behind control flow statements (#90)
351 - _Black_ now splits imports like "Mode 3 + trailing comma" of isort (#127)
353 - fixed comment indentation when a standalone comment closes a block (#16, #32)
355 - fixed standalone comments receiving extra empty lines if immediately preceding a
356 class, def, or decorator (#56, #154)
358 - fixed `--diff` not showing entire path (#130)
360 - fixed parsing of complex expressions after star and double stars in function calls
363 - fixed invalid splitting on comma in lambda arguments (#133)
365 - fixed missing splits of ternary expressions (#141)
369 - fixed parsing of unaligned standalone comments (#99, #112)
371 - fixed placement of dictionary unpacking inside dictionary literals (#111)
373 - Vim plugin now works on Windows, too
375 - fixed unstable formatting when encountering unnecessarily escaped quotes in a string
380 - added `--quiet` (#78)
382 - added automatic parentheses management (#4)
384 - added [pre-commit](https://pre-commit.com) integration (#103, #104)
386 - fixed reporting on `--check` with multiple files (#101, #102)
388 - fixed removing backslash escapes from raw strings (#100, #105)
392 - added `--diff` (#87)
394 - add line breaks before all delimiters, except in cases like commas, to better comply
397 - standardize string literals to use double quotes (almost) everywhere (#75)
399 - fixed handling of standalone comments within nested bracketed expressions; _Black_
400 will no longer produce super long lines or put all standalone comments at the end of
403 - fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace
406 - fixed 18.3a4 regression: `# yapf: disable` usage as trailing comment would cause
407 _Black_ to not emit the rest of the file (#95)
409 - when CTRL+C is pressed while formatting many files, _Black_ no longer freaks out with
410 a flurry of asyncio-related exceptions
412 - only allow up to two empty lines on module level and only single empty lines within
417 - `# fmt: off` and `# fmt: on` are implemented (#5)
419 - automatic detection of deprecated Python 2 forms of print statements and exec
420 statements in the formatted file (#49)
422 - use proper spaces for complex expressions in default values of typed function
425 - only return exit code 1 when --check is used (#50)
427 - don't remove single trailing commas from square bracket indexing (#59)
429 - don't omit whitespace if the previous factor leaf wasn't a math operator (#55)
431 - omit extra space in kwarg unpacking if it's the first argument (#46)
433 - omit extra space in
434 [Sphinx auto-attribute comments](http://www.sphinx-doc.org/en/stable/ext/autodoc.html#directive-autoattribute)
439 - don't remove single empty lines outside of bracketed expressions (#19)
441 - added ability to pipe formatting from stdin to stdin (#25)
443 - restored ability to format code with legacy usage of `async` as a name (#20, #42)
445 - even better handling of numpy-style array indexing (#33, again)
449 - changed positioning of binary operators to occur at beginning of lines instead of at
451 [a recent change to PEP 8](https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b)
454 - ignore empty bracket pairs while splitting. This avoids very weirdly looking
455 formattings (#34, #35)
457 - remove a trailing comma if there is a single argument to a call
459 - if top level functions were separated by a comment, don't put four empty lines after
462 - fixed unstable formatting of newlines with imports
464 - fixed unintentional folding of post scriptum standalone comments into last statement
465 if it was a simple statement (#18, #28)
467 - fixed missing space in numpy-style array indexing (#33)
469 - fixed spurious space after star-based unary expressions (#31)
475 - only put trailing commas in function signatures and calls if it's safe to do so. If
476 the file is Python 3.6+ it's always safe, otherwise only safe if there are no `*args`
477 or `**kwargs` used in the signature or call. (#8)
479 - fixed invalid spacing of dots in relative imports (#6, #13)
481 - fixed invalid splitting after comma on unpacked variables in for-loops (#23)
483 - fixed spurious space in parenthesized set expressions (#7)
485 - fixed spurious space after opening parentheses and in default arguments (#14, #17)
487 - fixed spurious space after unary operators when the operand was a complex expression
492 - first published version, Happy 🍰 Day 2018!
496 - date-versioned (see: https://calver.org/)