add discussion of magic comments to FAQ (#2272)

Co-authored-by: Cooper Lees <me@cooperlees.com>
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Jelle Zijlstra 2021-05-29 10:16:33 -07:00 committed by GitHub
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@ -23,6 +23,7 @@
### Documentation
- Add discussion of magic comments to FAQ page (#2272)
- `--experimental-string-processing` will be enabled by default in the future (#2273)
- Fix typos discovered by codespell (#2228)
- Fix Vim plugin installation instructions. (#2235)

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@ -21,7 +21,8 @@ _Black_ is still in [beta](index.rst), some edges are still a bit rough. To comb
issues, the equivalence of code after formatting is
[checked](the_black_code_style/current_style.md#ast-before-and-after-formatting) with
limited special cases where the code is allowed to differ. If issues are found, an error
is raised and the file is left untouched.
is raised and the file is left untouched. Magical comments that influence linters and
other tools, such as `# noqa`, may be moved by _Black_. See below for more details.
## How stable is Black's style?
@ -50,3 +51,11 @@ For formatting, yes! [Install](getting_started.md#installation) with the `python
to format Python 2 files too! There are no current plans to drop support, but most
likely it is bound to happen. Sometime. Eventually. In terms of running _Black_ though,
Python 3.6 or newer is required.
## Why does my linter or typechecker complain after I format my code?
Some linters and other tools use magical comments (e.g., `# noqa`, `# type: ignore`) to
influence their behavior. While Black does its best to recognize such comments and leave
them in the right place, this detection is not and cannot be perfect. Therefore, you'll
sometimes have to manually move these comments to the right place after you format your
codebase with _Black_.