More detailed isort configuration explanation

[etc/vim.git] / README.md

diff --git a/README.md b/README.md
index bc8977b7a9acff4b8a2a1de39b7abb49f3183fb2..d3f296cd8b2ea950c1b38e74b37e0343ee8a1eed 100644 (file)
--- 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.
@@ -180,8 +180,9 @@ 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` and
-`include_trailing_comma=True` in your isort config.
+[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
@@ -302,6 +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