X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/54d707e10a5bf3d8d352c1bcbc7946bb6f3c01d7..0967dfcbeba8aceaacd468b279cc23089d697878:/README.md diff --git a/README.md b/README.md index b380ee7..a9ec9ea 100644 --- a/README.md +++ b/README.md @@ -14,7 +14,7 @@ *Black* is the uncompromising Python code formatter. By using it, you -agree to cease control over minutiae of hand-formatting. In return, +agree to cede control over minutiae of hand-formatting. In return, *Black* gives you speed, determinism, and freedom from `pycodestyle` nagging about formatting. You will save time and mental energy for more important matters. @@ -176,6 +176,14 @@ between two distinct sections of the code that otherwise share the same indentation level (like the arguments list and the docstring in the example above). +If a line of "from" imports cannot fit in the allotted length, it's always split +into one per line. Imports tend to change often and this minimizes diffs, as well +as enables readers of code to easily find which commit introduced a particular +import. This exception also makes *Black* compatible with +[isort](https://pypi.org/p/isort/). Use `multi_line_output=3`, +`include_trailing_comma=True`, `force_grid_wrap=0`, and `line_length=88` in your +isort config. + ### Line length @@ -218,10 +226,7 @@ bother you if you overdo it by a few km/h". *Black* avoids spurious vertical whitespace. This is in the spirit of PEP 8 which says that in-function vertical whitespace should only be -used sparingly. One exception is control flow statements: *Black* will -always emit an extra empty line after ``return``, ``raise``, ``break``, -``continue``, and ``yield``. This is to make changes in control flow -more prominent to readers of your code. +used sparingly. *Black* will allow single empty lines inside functions, and single and double empty lines on module level left by the original editors, except @@ -230,11 +235,9 @@ are always reformatted to fit minimal space, this whitespace is lost. It will also insert proper spacing before and after function definitions. It's one line before and after inner functions and two lines before and -after module-level functions. *Black* will put those empty lines also -between the function definition and any standalone comments that -immediately precede the given function. If you want to comment on the -entire function, use a docstring or put a leading comment in the function -body. +after module-level functions. *Black* will not put empty lines between +function/class definitions and standalone comments that immediately precede +the given function/class. ### Trailing commas @@ -300,6 +303,19 @@ This behaviour may raise ``W503 line break before binary operator`` warnings in style guide enforcement tools like Flake8. Since ``W503`` is not PEP 8 compliant, you should tell Flake8 to ignore these warnings. +### Slices + +PEP 8 [recommends](https://www.python.org/dev/peps/pep-0008/#whitespace-in-expressions-and-statements) +to treat ``:`` in slices as a binary operator with the lowest priority, and to +leave an equal amount of space on either side, except if a parameter is omitted +(e.g. ``ham[1 + 1 :]``). It also states that for extended slices, both ``:`` +operators have to have the same amount of spacing, except if a parameter is +omitted (``ham[1 + 1 ::]``). *Black* enforces these rules consistently. + +This behaviour may raise ``E203 whitespace before ':'`` warnings in style guide +enforcement tools like Flake8. Since ``E203`` is not PEP 8 compliant, you should +tell Flake8 to ignore these warnings. + ### Parentheses Some parentheses are optional in the Python grammar. Any expression can @@ -368,9 +384,21 @@ Configuration: * `g:black_linelength` (defaults to `88`) * `g:black_virtualenv` (defaults to `~/.vim/black`) -To install, copy the plugin from [vim/plugin/black.vim](https://github.com/ambv/black/tree/master/vim/plugin/black.vim). +To install with [vim-plug](https://github.com/junegunn/vim-plug): + +``` +Plug 'ambv/black', +``` + +or with [Vundle](https://github.com/VundleVim/Vundle.vim): + +``` +Plugin 'ambv/black' +``` + +or you can copy the plugin from [plugin/black.vim](https://github.com/ambv/black/tree/master/plugin/black.vim). Let me know if this requires any changes to work with Vim 8's builtin -`packadd`, or Pathogen, or Vundle, and so on. +`packadd`, or Pathogen, and so on. This plugin **requires Vim 7.0+ built with Python 3.6+ support**. It needs Python 3.6 to be able to run *Black* inside the Vim process which @@ -448,9 +476,9 @@ location of the file depends on the black version and the system on which black is run. The file is non-portable. The standard location on common operating systems is: -* Windows: `C:\\Users\\AppData\Local\black\black\Cache\\cache.pickle` -* macOS: `/Users//Library/Caches/black//cache.pickle` -* Linux: `/home//.cache/black//cache.pickle` +* Windows: `C:\\Users\\AppData\Local\black\black\Cache\\cache..pickle` +* macOS: `/Users//Library/Caches/black//cache..pickle` +* Linux: `/home//.cache/black//cache..pickle` ## Testimonials @@ -492,8 +520,8 @@ MIT ## Contributing to Black -In terms of inspiration, *Black* is about as configurable as *gofmt* and -*rustfmt* are. This is deliberate. +In terms of inspiration, *Black* is about as configurable as *gofmt*. +This is deliberate. Bug reports and fixes are always welcome! However, before you suggest a new feature or configuration knob, ask yourself why you want it. If it @@ -508,7 +536,26 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md). ## Change Log -### 18.4a3 (unreleased) +### 18.5a0 (unreleased) + +* slices are now formatted according to PEP 8 (#178) + +* empty parentheses in a class definition are now removed (#145, #180) + +* fixed an invalid trailing comma sometimes left in imports (#185) + +* fixed non-deterministic formatting when multiple pairs of removable parentheses + were used (#183) + +* fixed not splitting long from-imports with only a single name + + +### 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) @@ -518,15 +565,26 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md). * 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 parameters (#2) + 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) @@ -684,10 +742,12 @@ Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com), Multiple contributions by: * [Anthony Sottile](mailto:asottile@umich.edu) * [Artem Malyshev](mailto:proofit404@gmail.com) +* [Christian Heimes](mailto:christian@python.org) * [Daniel M. Capella](mailto:polycitizen@gmail.com) * [Eli Treuherz](mailto:eli.treuherz@cgi.com) * Hugo van Kemenade * [Ivan Katanić](mailto:ivan.katanic@gmail.com) * [Jonas Obrist](mailto:ojiidotch@gmail.com) * [Osaetin Daniel](mailto:osaetindaniel@gmail.com) +* [Sunil Kapil](mailto:snlkapil@gmail.com) * [Vishwas B Sharma](mailto:sharma.vishwas88@gmail.com)