X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/62bfbd6a63dcac2f6f31eb014f69397c9eb967d2..5fe6d48fcd687a972278048d3bfeec9e2040ed64:/docs/the_black_code_style/current_style.md diff --git a/docs/the_black_code_style/current_style.md b/docs/the_black_code_style/current_style.md index 7d08bc9..11fe2c8 100644 --- a/docs/the_black_code_style/current_style.md +++ b/docs/the_black_code_style/current_style.md @@ -128,29 +128,9 @@ indentation level (like the arguments list and the docstring in the example abov If a data structure literal (tuple, list, set, dict) or a line of "from" imports cannot fit in the allotted length, it's always split into one element per line. This minimizes diffs as well as enables readers of code to find which commit introduced a particular -entry. This also makes _Black_ compatible with [isort](https://pypi.org/p/isort/) with -the following configuration. - -
-A compatible `.isort.cfg` - -```cfg -[settings] -multi_line_output = 3 -include_trailing_comma = True -force_grid_wrap = 0 -use_parentheses = True -ensure_newline_before_comments = True -line_length = 88 -``` - -The equivalent command line is: - -``` -$ isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --use-parentheses --line-width=88 [ file.py ] -``` - -
+entry. This also makes _Black_ compatible with +[isort](../guides/using_black_with_other_tools.md#isort) with the ready-made `black` +profile or manual configuration. ### Line length @@ -220,6 +200,16 @@ following field or method. This conforms to _Black_ won't insert empty lines after function docstrings unless that empty line is required due to an inner function starting immediately after. +### Comments + +_Black_ does not format comment contents, but it enforces two spaces between code and a +comment on the same line, and a space before the comment text begins. Some types of +comments that require specific spacing rules are respected: doc comments (`#: comment`), +section comments with long runs of hashes, and Spyder cells. Non-breaking spaces after +hashes are also preserved. Comments may sometimes be moved because of formatting +changes, which can break tools that assign special meaning to them. See +[AST before and after formatting](#ast-before-and-after-formatting) for more discussion. + ### Trailing commas _Black_ will add trailing commas to expressions that are split by comma where each @@ -243,10 +233,10 @@ _Black_ prefers double quotes (`"` and `"""`) over single quotes (`'` and `'''`) will replace the latter with the former as long as it does not result in more backslash escapes than before. -_Black_ also standardizes string prefixes, making them always lowercase. On top of that, -if your code is already Python 3.6+ only or it's using the `unicode_literals` future -import, _Black_ will remove `u` from the string prefix as it is meaningless in those -scenarios. +_Black_ also standardizes string prefixes. Prefix characters are made lowercase with the +exception of [capital "R" prefixes](#rstrings-and-rstrings), unicode literal markers +(`u`) are removed because they are meaningless in Python 3, and in the case of multiple +characters "r" is put first as in spoken language: "raw f-string". The main reason to standardize on a single form of quotes is aesthetics. Having one kind of quotes everywhere reduces reader distraction. It will also enable a future version of @@ -270,6 +260,8 @@ If you are adopting _Black_ in a large project with pre-existing string conventi you can pass `--skip-string-normalization` on the command line. This is meant as an adoption helper, avoid using this for new projects. +(labels/experimental-string)= + As an experimental option (can be enabled by `--experimental-string-processing`), _Black_ splits long strings (using parentheses where appropriate) and merges short ones. When split, parts of f-strings that don't need formatting are converted to plain @@ -283,14 +275,13 @@ for both quotations and the text within, although relative indentation in the te preserved. Superfluous trailing whitespace on each line and unnecessary new lines at the end of the docstring are removed. All leading tabs are converted to spaces, but tabs inside text are preserved. Whitespace leading and trailing one-line docstrings is -removed. The quotations of an empty docstring are separated with one space. +removed. ### Numeric literals _Black_ standardizes most numeric literals to use lowercase letters for the syntactic parts and uppercase letters for the digits themselves: `0xAB` instead of `0XAB` and -`1e10` instead of `1E10`. Python 2 long literals are styled as `2L` instead of `2l` to -avoid confusion between `l` and `1`. +`1e10` instead of `1E10`. ### Line breaks & binary operators