This is a tool of my own making. Right now our requirement to have the
PR number in the changelog entry is pretty painful / annoying since
the contributor either has to guess or add the # retroactively after
the PR creation. This tool should make it way less painful by making
it simple to get your PR number beforehand.
* Added support for top-level user configuration
At the user level, a TOML config can be specified in the following locations:
* Windows: ~\.black
* Unix-like: $XDG_CONFIG_HOME/black (~/.config/black fallback)
Instead of changing env vars for the entire black-primer process, they
are now changed only for the black subprocess, using a tmpdir.
[The section about line length][1] was contradictory.
On one side, it said:
> Black will try to respect that [line length limit]. However, sometimes it won't be able to without breaking other rules. In those rare cases, auto-formatted code will exceed your allotted limit.
So black doesn't guarantee that your code is formatted at 88 chars, even when configured with `--line-length=88` (default). Black uses this limit as a "hint" more than a "rule".
OTOH, it also said:
> If you're using Flake8, you can bump max-line-length to 88 and forget about it. Alternatively, use Bugbear's B950 warning instead of E501 and keep the max line length at 80 which you are probably already using.
But that's not true. You can't "forget about it" because Black sometimes won't respect the limit. Both E501 at 88 and B950 at 80 behave the same: linter error at 89+ length. So, if Black happens to decide that a line of code is better at 90 characters that some other fancy style, you land on a unlucky situation where both tools will fight.
So, AFAICS, the best way to align flake8 and black is to:
1. Use flake8-bugbear
2. Enable B950
3. Disable E501
4. Set `max-line-length = 88`
This way, we also tell flake8 that 88 limit is a "hint" and not a "rule". The real rule will be 88 + 10%. If black decides that a line fits better in 97 characters than in 88 + some formatting, _that_ probably means your code has a real problem.
To avoid further confusion, I change the official recommendation here.
[1]: e82bb8d8b8 (opinionated-warnings)
Fixes: #1662
Work-around for https://bugs.python.org/issue2142
The test has to slightly mess with its input data, because the utility
functions default to ensuring the test data has a final newline, which
defeats the point of the test.
Signed-off-by: Paul "TBBle" Hampson <Paul.Hampson@Pobox.com>
* Provide a stdin-filename to allow stdin to respect exclude/force-exclude rules
This will allow automatic tools to enforce the project's
exclude/force-exclude rules even if they pass the file through stdin to
update its buffer.
This is a similar solution to --stdin-display-name in flake8.
* Update src/black/__init__.py
Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com>
* --stdin-filename should only respect --exclude-filename
* Update README with the new --stdin-filename option
* Write some tests for the new stdin-filename functionality
* Apply suggestions from code review
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Force stdin output when we asked for stdin even if the file exists
* Add an entry in the changelog regarding --stdin-filename
* Reduce disk reads if possible
Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com>
* Check for is_stdin and p.is_file before checking for p.is_dir()
Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Document some culprits with pre-commit
* make pre-commit happy
* don't use monospace for black & pre-commit
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* make pre-commit happy again
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Allow default params overriding.
* Update: docs and action.yaml.
* The second contirbution, add my name to authors.md
* Correct docs `with.args` example.
* Just to rerun the Travis jobs.
* chmod 755
Black used to erroneously remove all empty lines between non-function
code and decorators when formatting typing stubs. Now a single empty
line is enforced.
I chose for putting empty lines around decorated classes that have empty
bodies since removing empty lines around such classes would cause a
formatting issue that seems to be impossible to fix.
For example:
```
class A: ...
@some_decorator
class B: ...
class C: ...
class D: ...
@some_other_decorator
def foo(): -> None: ...
```
It is easy to enforce no empty lines between class A, B, and C.
Just return 0, 0 for a line that is a decorator and precedes an stub
class. Fortunately before this commit, empty lines after that class
would be removed already.
Now let's look at the empty line between class D and function foo. In
this case, there should be an empty line there since it's class code next
to function code. The problem is that when deciding to add X empty lines
before a decorator, you can't tell whether it's before a class or a
function. If the decorator is before a function, then an empty line
is needed, while no empty lines are needed when the decorator is
before a class.
So even though I personally prefer no empty lines around decorated
classes, I had to go the other way surrounding decorated classes with
empty lines.
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
* Fix incorrect space before colon in if/while stmts
Previously Black would format this code
```
if (foo := True):
print(foo)
```
as
```
if (foo := True) :
print(foo)
```
adding an incorrect space after the RPAR. Buggy code in the
normalize_invisible_parens function caused the colon to be wrapped in
invisible parentheses. The LPAR of that pair was then prefixed with a
single space at the request of the whitespace function.
This commit fixes the accidental skipping of a pre-condition check
which must return True before parenthesis normalization of a specific
child Leaf or Node can happen. The pre-condition check being skipped
was why the colon was wrapped in invisible parentheses.
* Add an entry in CHANGES.md
The quotes of multiline docstrings are now only normalized when string
normalization is off, instead of the string normalization setting being
ignored and the quotes being *always* normalized.
I had to make a new test case and data file since the current pair for
docstrings only worked when there is no formatting difference between the
formatting results with string normalization on and off. I needed to add
tests for when there *are* differences between the two. So I split
test_docstring's test code when string normalization is disabled into a
new test case along with a new data file.
* Upgrade docs to Sphinx 3+
* Fix all the warnings...
- Fixed bad docstrings
- Fixed bad fenced code blocks in documentation
- Blocklisted some sections from being generated from the README
- Added missing documentation to index.rst
- Fixed an invalid autofunction directive in reference/reference_functions.rst
- Pin another documentation dependency
* Add documentation build test
Isort 5 introduced profiles and ensure_newline_before_comments options. Either needs to be added to work correctly with black.
Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com>
