Changelog
### 20.8b1
```
_Packaging_
- explicitly depend on Click 7.1.2 or newer as `Black` no longer works with versions
older than 7.0
```
### 20.8b0
```
_Black_
- re-implemented support for explicit trailing commas: now it works consistently within
any bracket pair, including nested structures (1288 and duplicates)
- `Black` now reindents docstrings when reindenting code around it (1053)
- `Black` now shows colored diffs (1266)
- `Black` is now packaged using 'py3' tagged wheels (1388)
- `Black` now supports Python 3.8 code, e.g. star expressions in return statements
(1121)
- `Black` no longer normalizes capital R-string prefixes as those have a
community-accepted meaning (1244)
- `Black` now uses exit code 2 when specified configuration file doesn't exit (1361)
- `Black` now works on AWS Lambda (1141)
- added `--force-exclude` argument (1032)
- removed deprecated `--py36` option (1236)
- fixed `--diff` output when EOF is encountered (526)
- fixed ` fmt: off` handling around decorators (560)
- fixed unstable formatting with some ` type: ignore` comments (1113)
- fixed invalid removal on organizing brackets followed by indexing (1575)
- introduced `black-primer`, a CI tool that allows us to run regression tests against
existing open source users of Black (1402)
- introduced property-based fuzzing to our test suite based on Hypothesis and
Hypothersmith (1566)
- implemented experimental and disabled by default long string rewrapping (1132),
hidden under a `--experimental-string-processing` flag while it's being worked on;
this is an undocumented and unsupported feature, you lose Internet points for
depending on it (1609)
Vim plugin
- prefer virtualenv packages over global packages (1383)
```
### 19.10b0
```
- added support for PEP 572 assignment expressions (711)
- added support for PEP 570 positional-only arguments (943)
- added support for async generators (593)
- added support for pre-splitting collections by putting an explicit trailing comma
inside (826)
- added `black -c` as a way to format code passed from the command line (761)
- --safe now works with Python 2 code (840)
- fixed grammar selection for Python 2-specific code (765)
- fixed feature detection for trailing commas in function definitions and call sites
(763)
- ` fmt: off`/` fmt: on` comment pairs placed multiple times within the same block of
code now behave correctly (1005)
- _Black_ no longer crashes on Windows machines with more than 61 cores (838)
- _Black_ no longer crashes on standalone comments prepended with a backslash (767)
- _Black_ no longer crashes on `from` ... `import` blocks with comments (829)
- _Black_ no longer crashes on Python 3.7 on some platform configurations (494)
- _Black_ no longer fails on comments in from-imports (671)
- _Black_ no longer fails when the file starts with a backslash (922)
- _Black_ no longer merges regular comments with type comments (1027)
- _Black_ no longer splits long lines that contain type comments (997)
- removed unnecessary parentheses around `yield` expressions (834)
- added parentheses around long tuples in unpacking assignments (832)
- added parentheses around complex powers when they are prefixed by a unary operator
(646)
- fixed bug that led _Black_ format some code with a line length target of 1 (762)
- _Black_ no longer introduces quotes in f-string subexpressions on string boundaries
(863)
- if _Black_ puts parenthesis around a single expression, it moves comments to the
wrapped expression instead of after the brackets (872)
- `blackd` now returns the version of _Black_ in the response headers (1013)
- `blackd` can now output the diff of formats on source code when the `X-Diff` header is
provided (969)
```
### 19.3b0
```
- new option `--target-version` to control which Python versions _Black_-formatted code
should target (618)
- deprecated `--py36` (use `--target-version=py36` instead) (724)
- _Black_ no longer normalizes numeric literals to include `_` separators (696)
- long `del` statements are now split into multiple lines (698)
- type comments are no longer mangled in function signatures
- improved performance of formatting deeply nested data structures (509)
- _Black_ now properly formats multiple files in parallel on Windows (632)
- _Black_ now creates cache files atomically which allows it to be used in parallel
pipelines (like `xargs -P8`) (673)
- _Black_ now correctly indents comments in files that were previously formatted with
tabs (262)
- `blackd` now supports CORS (622)
```
### 18.9b0
```
- numeric literals are now formatted by _Black_ (452, 461, 464, 469):
- numeric literals are normalized to include `_` separators on Python 3.6+ code
- added `--skip-numeric-underscore-normalization` to disable the above behavior and
leave numeric underscores as they were in the input
- code with `_` in numeric literals is recognized as Python 3.6+
- most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`)
- hexadecimal digits are always uppercased (e.g. `0xBADC0DE`)
- added `blackd`, see [its documentation](blackd) for more info (349)
- adjacent string literals are now correctly split into multiple lines (463)
- trailing comma is now added to single imports that don't fit on a line (250)
- cache is now populated when `--check` is successful for a file which speeds up
consecutive checks of properly formatted unmodified files (448)
- whitespace at the beginning of the file is now removed (399)
- fixed mangling [pweave](http://mpastell.com/pweave/) and
[Spyder IDE](https://www.spyder-ide.org/) special comments (532)
- fixed unstable formatting when unpacking big tuples (267)
- fixed parsing of `__future__` imports with renames (389)
- fixed scope of ` fmt: off` when directly preceding `yield` and other nodes (385)
- fixed formatting of lambda expressions with default arguments (468)
- fixed `async for` statements: _Black_ no longer breaks them into separate lines (372)
- note: the Vim plugin stopped registering `,=` as a default chord as it turned out to
be a bad idea (415)
```
### 18.6b4
```
- hotfix: don't freeze when multiple comments directly precede ` fmt: off` (371)
```
### 18.6b3
```
- typing stub files (`.pyi`) now have blank lines added after constants (340)
- ` fmt: off` and ` fmt: on` are now much more dependable:
- they now work also within bracket pairs (329)
- they now correctly work across function/class boundaries (335)
- they now work when an indentation block starts with empty lines or misaligned
comments (334)
- made Click not fail on invalid environments; note that Click is right but the
likelihood we'll need to access non-ASCII file paths when dealing with Python source
code is low (277)
- fixed improper formatting of f-strings with quotes inside interpolated expressions
(322)
- fixed unnecessary slowdown when long list literals where found in a file
- fixed unnecessary slowdown on AST nodes with very many siblings
- fixed cannibalizing backslashes during string normalization
- fixed a crash due to symbolic links pointing outside of the project directory (338)
```
### 18.6b2
```
- added `--config` (65)
- added `-h` equivalent to `--help` (316)
- fixed improper unmodified file caching when `-S` was used
- fixed extra space in string unpacking (305)
- fixed formatting of empty triple quoted strings (313)
- fixed unnecessary slowdown in comment placement calculation on lines without comments
```
### 18.6b1
```
- hotfix: don't output human-facing information on stdout (299)
- hotfix: don't output cake emoji on non-zero return code (300)
```
### 18.6b0
```
- added `--include` and `--exclude` (270)
- added `--skip-string-normalization` (118)
- added `--verbose` (283)
- the header output in `--diff` now actually conforms to the unified diff spec
- fixed long trivial assignments being wrapped in unnecessary parentheses (273)
- fixed unnecessary parentheses when a line contained multiline strings (232)
- fixed stdin handling not working correctly if an old version of Click was used (276)
- _Black_ now preserves line endings when formatting a file in place (258)
```
### 18.5b1
```
- added `--pyi` (249)
- added `--py36` (249)
- Python grammar pickle caches are stored with the formatting caches, making _Black_
work in environments where site-packages is not user-writable (192)
- _Black_ now enforces a PEP 257 empty line after a class-level docstring (and/or
fields) and the first method
- fixed invalid code produced when standalone comments were present in a trailer that
was omitted from line splitting on a large expression (237)
- fixed optional parentheses being removed within ` fmt: off` sections (224)
- fixed invalid code produced when stars in very long imports were incorrectly wrapped
in optional parentheses (234)
- fixed unstable formatting when inline comments were moved around in a trailer that was
omitted from line splitting on a large expression (238)
- fixed extra empty line between a class declaration and the first method if no class
docstring or fields are present (219)
- fixed extra empty line between a function signature and an inner function or inner
class (196)
```
### 18.5b0
```
- call chains are now formatted according to the
[fluent interfaces](https://en.wikipedia.org/wiki/Fluent_interface) style (67)
- data structure literals (tuples, lists, dictionaries, and sets) are now also always
exploded like imports when they don't fit in a single line (152)
- slices are now formatted according to PEP 8 (178)
- parentheses are now also managed automatically on the right-hand side of assignments
and return statements (140)
- math operators now use their respective priorities for delimiting multiline
expressions (148)
- optional parentheses are now omitted on expressions that start or end with a bracket
and only contain a single operator (177)
- empty parentheses in a class definition are now removed (145, 180)
- string prefixes are now standardized to lowercase and `u` is removed on Python 3.6+
only code and Python 2.7+ code with the `unicode_literals` future import (188, 198,
199)
- typing stub files (`.pyi`) are now formatted in a style that is consistent with PEP
484 (207, 210)
- progress when reformatting many files is now reported incrementally
- fixed trailers (content with brackets) being unnecessarily exploded into their own
lines after a dedented closing bracket (119)
- fixed an invalid trailing comma sometimes left in imports (185)
- fixed non-deterministic formatting when multiple pairs of removable parentheses were
used (183)
- fixed multiline strings being unnecessarily wrapped in optional parentheses in long
assignments (215)
- fixed not splitting long from-imports with only a single name
- fixed Python 3.6+ file discovery by also looking at function calls with unpacking.
This fixed non-deterministic formatting if trailing commas where used both in function
signatures with stars and function calls with stars but the former would be
reformatted to a single line.
- fixed crash on dealing with optional parentheses (193)
- fixed "is", "is not", "in", and "not in" not considered operators for splitting
purposes
- fixed crash when dead symlinks where encountered
```
### 18.4a4
```
- don't populate the cache on `--check` (175)
```
### 18.4a3
```
- added a "cache"; files already reformatted that haven't changed on disk won't be
reformatted again (109)
- `--check` and `--diff` are no longer mutually exclusive (149)
- generalized star expression handling, including double stars; this fixes
multiplication making expressions "unsafe" for trailing commas (132)
- _Black_ no longer enforces putting empty lines behind control flow statements (90)
- _Black_ now splits imports like "Mode 3 + trailing comma" of isort (127)
- fixed comment indentation when a standalone comment closes a block (16, 32)
- fixed standalone comments receiving extra empty lines if immediately preceding a
class, def, or decorator (56, 154)
- fixed `--diff` not showing entire path (130)
- fixed parsing of complex expressions after star and double stars in function calls
(2)
- fixed invalid splitting on comma in lambda arguments (133)
- fixed missing splits of ternary expressions (141)
```
### 18.4a2
```
- fixed parsing of unaligned standalone comments (99, 112)
- fixed placement of dictionary unpacking inside dictionary literals (111)
- Vim plugin now works on Windows, too
- fixed unstable formatting when encountering unnecessarily escaped quotes in a string
(120)
```
### 18.4a1
```
- added `--quiet` (78)
- added automatic parentheses management (4)
- added [pre-commit](https://pre-commit.com) integration (103, 104)
- fixed reporting on `--check` with multiple files (101, 102)
- fixed removing backslash escapes from raw strings (100, 105)
```
### 18.4a0
```
- added `--diff` (87)
- add line breaks before all delimiters, except in cases like commas, to better comply
with PEP 8 (73)
- standardize string literals to use double quotes (almost) everywhere (75)
- fixed handling of standalone comments within nested bracketed expressions; _Black_
will no longer produce super long lines or put all standalone comments at the end of
the expression (22)
- fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace
(80)
- fixed 18.3a4 regression: ` yapf: disable` usage as trailing comment would cause
_Black_ to not emit the rest of the file (95)
- when CTRL+C is pressed while formatting many files, _Black_ no longer freaks out with
a flurry of asyncio-related exceptions
- only allow up to two empty lines on module level and only single empty lines within
functions (74)
```
### 18.3a4
```
- ` fmt: off` and ` fmt: on` are implemented (5)
- automatic detection of deprecated Python 2 forms of print statements and exec
statements in the formatted file (49)
- use proper spaces for complex expressions in default values of typed function
arguments (60)
- only return exit code 1 when --check is used (50)
- don't remove single trailing commas from square bracket indexing (59)
- don't omit whitespace if the previous factor leaf wasn't a math operator (55)
- omit extra space in kwarg unpacking if it's the first argument (46)
- omit extra space in
[Sphinx auto-attribute comments](http://www.sphinx-doc.org/en/stable/ext/autodoc.htmldirective-autoattribute)
(68)
```
### 18.3a3
```
- don't remove single empty lines outside of bracketed expressions (19)
- added ability to pipe formatting from stdin to stdin (25)
- restored ability to format code with legacy usage of `async` as a name (20, 42)
- even better handling of numpy-style array indexing (33, again)
```
### 18.3a2
```
- changed positioning of binary operators to occur at beginning of lines instead of at
the end, following
[a recent change to PEP 8](https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b)
(21)
- ignore empty bracket pairs while splitting. This avoids very weirdly looking
formattings (34, 35)
- remove a trailing comma if there is a single argument to a call
- if top level functions were separated by a comment, don't put four empty lines after
the upper function
- fixed unstable formatting of newlines with imports
- fixed unintentional folding of post scriptum standalone comments into last statement
if it was a simple statement (18, 28)
- fixed missing space in numpy-style array indexing (33)
- fixed spurious space after star-based unary expressions (31)
```
### 18.3a1
```
- added `--check`
- only put trailing commas in function signatures and calls if it's safe to do so. If
the file is Python 3.6+ it's always safe, otherwise only safe if there are no `*args`
or `**kwargs` used in the signature or call. (8)
- fixed invalid spacing of dots in relative imports (6, 13)
- fixed invalid splitting after comma on unpacked variables in for-loops (23)
- fixed spurious space in parenthesized set expressions (7)
- fixed spurious space after opening parentheses and in default arguments (14, 17)
- fixed spurious space after unary operators when the operand was a complex expression
(15)
```
### 18.3a0
```
- first published version, Happy 🍰 Day 2018!
- alpha quality
- date-versioned (see: https://calver.org/)
```
Links
- PyPI: https://pypi.org/project/black
- Changelog: https://pyup.io/changelogs/black/
- Repo: https://github.com/psf/black
This PR pins black to the latest release 20.8b1.
Changelog
### 20.8b1 ``` _Packaging_ - explicitly depend on Click 7.1.2 or newer as `Black` no longer works with versions older than 7.0 ``` ### 20.8b0 ``` _Black_ - re-implemented support for explicit trailing commas: now it works consistently within any bracket pair, including nested structures (1288 and duplicates) - `Black` now reindents docstrings when reindenting code around it (1053) - `Black` now shows colored diffs (1266) - `Black` is now packaged using 'py3' tagged wheels (1388) - `Black` now supports Python 3.8 code, e.g. star expressions in return statements (1121) - `Black` no longer normalizes capital R-string prefixes as those have a community-accepted meaning (1244) - `Black` now uses exit code 2 when specified configuration file doesn't exit (1361) - `Black` now works on AWS Lambda (1141) - added `--force-exclude` argument (1032) - removed deprecated `--py36` option (1236) - fixed `--diff` output when EOF is encountered (526) - fixed ` fmt: off` handling around decorators (560) - fixed unstable formatting with some ` type: ignore` comments (1113) - fixed invalid removal on organizing brackets followed by indexing (1575) - introduced `black-primer`, a CI tool that allows us to run regression tests against existing open source users of Black (1402) - introduced property-based fuzzing to our test suite based on Hypothesis and Hypothersmith (1566) - implemented experimental and disabled by default long string rewrapping (1132), hidden under a `--experimental-string-processing` flag while it's being worked on; this is an undocumented and unsupported feature, you lose Internet points for depending on it (1609) Vim plugin - prefer virtualenv packages over global packages (1383) ``` ### 19.10b0 ``` - added support for PEP 572 assignment expressions (711) - added support for PEP 570 positional-only arguments (943) - added support for async generators (593) - added support for pre-splitting collections by putting an explicit trailing comma inside (826) - added `black -c` as a way to format code passed from the command line (761) - --safe now works with Python 2 code (840) - fixed grammar selection for Python 2-specific code (765) - fixed feature detection for trailing commas in function definitions and call sites (763) - ` fmt: off`/` fmt: on` comment pairs placed multiple times within the same block of code now behave correctly (1005) - _Black_ no longer crashes on Windows machines with more than 61 cores (838) - _Black_ no longer crashes on standalone comments prepended with a backslash (767) - _Black_ no longer crashes on `from` ... `import` blocks with comments (829) - _Black_ no longer crashes on Python 3.7 on some platform configurations (494) - _Black_ no longer fails on comments in from-imports (671) - _Black_ no longer fails when the file starts with a backslash (922) - _Black_ no longer merges regular comments with type comments (1027) - _Black_ no longer splits long lines that contain type comments (997) - removed unnecessary parentheses around `yield` expressions (834) - added parentheses around long tuples in unpacking assignments (832) - added parentheses around complex powers when they are prefixed by a unary operator (646) - fixed bug that led _Black_ format some code with a line length target of 1 (762) - _Black_ no longer introduces quotes in f-string subexpressions on string boundaries (863) - if _Black_ puts parenthesis around a single expression, it moves comments to the wrapped expression instead of after the brackets (872) - `blackd` now returns the version of _Black_ in the response headers (1013) - `blackd` can now output the diff of formats on source code when the `X-Diff` header is provided (969) ``` ### 19.3b0 ``` - new option `--target-version` to control which Python versions _Black_-formatted code should target (618) - deprecated `--py36` (use `--target-version=py36` instead) (724) - _Black_ no longer normalizes numeric literals to include `_` separators (696) - long `del` statements are now split into multiple lines (698) - type comments are no longer mangled in function signatures - improved performance of formatting deeply nested data structures (509) - _Black_ now properly formats multiple files in parallel on Windows (632) - _Black_ now creates cache files atomically which allows it to be used in parallel pipelines (like `xargs -P8`) (673) - _Black_ now correctly indents comments in files that were previously formatted with tabs (262) - `blackd` now supports CORS (622) ``` ### 18.9b0 ``` - numeric literals are now formatted by _Black_ (452, 461, 464, 469): - numeric literals are normalized to include `_` separators on Python 3.6+ code - added `--skip-numeric-underscore-normalization` to disable the above behavior and leave numeric underscores as they were in the input - code with `_` in numeric literals is recognized as Python 3.6+ - most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`) - hexadecimal digits are always uppercased (e.g. `0xBADC0DE`) - added `blackd`, see [its documentation](blackd) for more info (349) - adjacent string literals are now correctly split into multiple lines (463) - trailing comma is now added to single imports that don't fit on a line (250) - cache is now populated when `--check` is successful for a file which speeds up consecutive checks of properly formatted unmodified files (448) - whitespace at the beginning of the file is now removed (399) - fixed mangling [pweave](http://mpastell.com/pweave/) and [Spyder IDE](https://www.spyder-ide.org/) special comments (532) - fixed unstable formatting when unpacking big tuples (267) - fixed parsing of `__future__` imports with renames (389) - fixed scope of ` fmt: off` when directly preceding `yield` and other nodes (385) - fixed formatting of lambda expressions with default arguments (468) - fixed `async for` statements: _Black_ no longer breaks them into separate lines (372) - note: the Vim plugin stopped registering `,=` as a default chord as it turned out to be a bad idea (415) ``` ### 18.6b4 ``` - hotfix: don't freeze when multiple comments directly precede ` fmt: off` (371) ``` ### 18.6b3 ``` - typing stub files (`.pyi`) now have blank lines added after constants (340) - ` fmt: off` and ` fmt: on` are now much more dependable: - they now work also within bracket pairs (329) - they now correctly work across function/class boundaries (335) - they now work when an indentation block starts with empty lines or misaligned comments (334) - made Click not fail on invalid environments; note that Click is right but the likelihood we'll need to access non-ASCII file paths when dealing with Python source code is low (277) - fixed improper formatting of f-strings with quotes inside interpolated expressions (322) - fixed unnecessary slowdown when long list literals where found in a file - fixed unnecessary slowdown on AST nodes with very many siblings - fixed cannibalizing backslashes during string normalization - fixed a crash due to symbolic links pointing outside of the project directory (338) ``` ### 18.6b2 ``` - added `--config` (65) - added `-h` equivalent to `--help` (316) - fixed improper unmodified file caching when `-S` was used - fixed extra space in string unpacking (305) - fixed formatting of empty triple quoted strings (313) - fixed unnecessary slowdown in comment placement calculation on lines without comments ``` ### 18.6b1 ``` - hotfix: don't output human-facing information on stdout (299) - hotfix: don't output cake emoji on non-zero return code (300) ``` ### 18.6b0 ``` - added `--include` and `--exclude` (270) - added `--skip-string-normalization` (118) - added `--verbose` (283) - the header output in `--diff` now actually conforms to the unified diff spec - fixed long trivial assignments being wrapped in unnecessary parentheses (273) - fixed unnecessary parentheses when a line contained multiline strings (232) - fixed stdin handling not working correctly if an old version of Click was used (276) - _Black_ now preserves line endings when formatting a file in place (258) ``` ### 18.5b1 ``` - added `--pyi` (249) - added `--py36` (249) - Python grammar pickle caches are stored with the formatting caches, making _Black_ work in environments where site-packages is not user-writable (192) - _Black_ now enforces a PEP 257 empty line after a class-level docstring (and/or fields) and the first method - fixed invalid code produced when standalone comments were present in a trailer that was omitted from line splitting on a large expression (237) - fixed optional parentheses being removed within ` fmt: off` sections (224) - fixed invalid code produced when stars in very long imports were incorrectly wrapped in optional parentheses (234) - fixed unstable formatting when inline comments were moved around in a trailer that was omitted from line splitting on a large expression (238) - fixed extra empty line between a class declaration and the first method if no class docstring or fields are present (219) - fixed extra empty line between a function signature and an inner function or inner class (196) ``` ### 18.5b0 ``` - call chains are now formatted according to the [fluent interfaces](https://en.wikipedia.org/wiki/Fluent_interface) style (67) - data structure literals (tuples, lists, dictionaries, and sets) are now also always exploded like imports when they don't fit in a single line (152) - slices are now formatted according to PEP 8 (178) - parentheses are now also managed automatically on the right-hand side of assignments and return statements (140) - math operators now use their respective priorities for delimiting multiline expressions (148) - optional parentheses are now omitted on expressions that start or end with a bracket and only contain a single operator (177) - empty parentheses in a class definition are now removed (145, 180) - string prefixes are now standardized to lowercase and `u` is removed on Python 3.6+ only code and Python 2.7+ code with the `unicode_literals` future import (188, 198, 199) - typing stub files (`.pyi`) are now formatted in a style that is consistent with PEP 484 (207, 210) - progress when reformatting many files is now reported incrementally - fixed trailers (content with brackets) being unnecessarily exploded into their own lines after a dedented closing bracket (119) - fixed an invalid trailing comma sometimes left in imports (185) - fixed non-deterministic formatting when multiple pairs of removable parentheses were used (183) - fixed multiline strings being unnecessarily wrapped in optional parentheses in long assignments (215) - fixed not splitting long from-imports with only a single name - fixed Python 3.6+ file discovery by also looking at function calls with unpacking. This fixed non-deterministic formatting if trailing commas where used both in function signatures with stars and function calls with stars but the former would be reformatted to a single line. - fixed crash on dealing with optional parentheses (193) - fixed "is", "is not", "in", and "not in" not considered operators for splitting purposes - fixed crash when dead symlinks where encountered ``` ### 18.4a4 ``` - don't populate the cache on `--check` (175) ``` ### 18.4a3 ``` - added a "cache"; files already reformatted that haven't changed on disk won't be reformatted again (109) - `--check` and `--diff` are no longer mutually exclusive (149) - generalized star expression handling, including double stars; this fixes multiplication making expressions "unsafe" for trailing commas (132) - _Black_ no longer enforces putting empty lines behind control flow statements (90) - _Black_ now splits imports like "Mode 3 + trailing comma" of isort (127) - fixed comment indentation when a standalone comment closes a block (16, 32) - fixed standalone comments receiving extra empty lines if immediately preceding a class, def, or decorator (56, 154) - fixed `--diff` not showing entire path (130) - fixed parsing of complex expressions after star and double stars in function calls (2) - fixed invalid splitting on comma in lambda arguments (133) - fixed missing splits of ternary expressions (141) ``` ### 18.4a2 ``` - fixed parsing of unaligned standalone comments (99, 112) - fixed placement of dictionary unpacking inside dictionary literals (111) - Vim plugin now works on Windows, too - fixed unstable formatting when encountering unnecessarily escaped quotes in a string (120) ``` ### 18.4a1 ``` - added `--quiet` (78) - added automatic parentheses management (4) - added [pre-commit](https://pre-commit.com) integration (103, 104) - fixed reporting on `--check` with multiple files (101, 102) - fixed removing backslash escapes from raw strings (100, 105) ``` ### 18.4a0 ``` - added `--diff` (87) - add line breaks before all delimiters, except in cases like commas, to better comply with PEP 8 (73) - standardize string literals to use double quotes (almost) everywhere (75) - fixed handling of standalone comments within nested bracketed expressions; _Black_ will no longer produce super long lines or put all standalone comments at the end of the expression (22) - fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace (80) - fixed 18.3a4 regression: ` yapf: disable` usage as trailing comment would cause _Black_ to not emit the rest of the file (95) - when CTRL+C is pressed while formatting many files, _Black_ no longer freaks out with a flurry of asyncio-related exceptions - only allow up to two empty lines on module level and only single empty lines within functions (74) ``` ### 18.3a4 ``` - ` fmt: off` and ` fmt: on` are implemented (5) - automatic detection of deprecated Python 2 forms of print statements and exec statements in the formatted file (49) - use proper spaces for complex expressions in default values of typed function arguments (60) - only return exit code 1 when --check is used (50) - don't remove single trailing commas from square bracket indexing (59) - don't omit whitespace if the previous factor leaf wasn't a math operator (55) - omit extra space in kwarg unpacking if it's the first argument (46) - omit extra space in [Sphinx auto-attribute comments](http://www.sphinx-doc.org/en/stable/ext/autodoc.htmldirective-autoattribute) (68) ``` ### 18.3a3 ``` - don't remove single empty lines outside of bracketed expressions (19) - added ability to pipe formatting from stdin to stdin (25) - restored ability to format code with legacy usage of `async` as a name (20, 42) - even better handling of numpy-style array indexing (33, again) ``` ### 18.3a2 ``` - changed positioning of binary operators to occur at beginning of lines instead of at the end, following [a recent change to PEP 8](https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b) (21) - ignore empty bracket pairs while splitting. This avoids very weirdly looking formattings (34, 35) - remove a trailing comma if there is a single argument to a call - if top level functions were separated by a comment, don't put four empty lines after the upper function - fixed unstable formatting of newlines with imports - fixed unintentional folding of post scriptum standalone comments into last statement if it was a simple statement (18, 28) - fixed missing space in numpy-style array indexing (33) - fixed spurious space after star-based unary expressions (31) ``` ### 18.3a1 ``` - added `--check` - only put trailing commas in function signatures and calls if it's safe to do so. If the file is Python 3.6+ it's always safe, otherwise only safe if there are no `*args` or `**kwargs` used in the signature or call. (8) - fixed invalid spacing of dots in relative imports (6, 13) - fixed invalid splitting after comma on unpacked variables in for-loops (23) - fixed spurious space in parenthesized set expressions (7) - fixed spurious space after opening parentheses and in default arguments (14, 17) - fixed spurious space after unary operators when the operand was a complex expression (15) ``` ### 18.3a0 ``` - first published version, Happy 🍰 Day 2018! - alpha quality - date-versioned (see: https://calver.org/) ```Links
- PyPI: https://pypi.org/project/black - Changelog: https://pyup.io/changelogs/black/ - Repo: https://github.com/psf/black