![]() ![]() Our documentation covers the current Black code style, but planned changes to it areĪlso documented. Take previous formatting into account (see Style configuration options are deliberately limited and rarely added. The Black code styleīlack is a PEP 8 compliant opinionated formatter. Reformatted code still produces a valid AST that is effectively equivalent to the ![]() For more information please refer to theĪlso, as a safety measure which slows down processing, Black will check that the Stylistic changes will mostly be responses to bug reports and support for new Python We have become stable, you should not expect large formatting changes in the future. Tests, and our own auto formatting and parallel Continuous Integration runner. Black has a comprehensive test suite, with efficient parallel To get started right away with sensible defaults: black įurther information can be found in our docs:īlack is already successfully used by many If you can't wait for the latest hotness and want to install from GitHub, use: If you want to format Jupyter Notebooks, install with pip install "black". Watch theīlack can be installed by running pip install black. Try it out now using the Black Playground. Formattingīecomes transparent after a while and you can focus on the content instead.īlack makes code review faster by producing the smallest diffs possible. You will save timeĪnd mental energy for more important matters.īlackened code looks the same regardless of the project you're reading. In return, Black gives you speed,ĭeterminism, and freedom from pycodestyle nagging about formatting. By using it, you agree to cedeĬontrol over minutiae of hand-formatting. A full report on the ROS 2 codebase to see if and how it can be adopted as a ROS 2 linter would be valuable to improve chances of adoption (in addition to the flake8 plugins currently in use).Black is the uncompromising Python code formatter. It is however a young and quilckly evolving tool. Some other parts of black are also being made more flexible to ease adoption, and could be leveraged to match more closely the ROS 2 style, for example the magic trailing comma.īlack is a great tool definitely filling a need and I definitely will use it on some projects. It could also be argued that a clean break can be made and switching to double quotes would allow auto formatting and improve consistency with the other languages of the ROS 2 core (C and C++ both using double quotes). This is not exactly the same as saying “use single quotes” as black will just not reformat string quotes at all, whichever type of quote is used, but this could be a compromise to preserve backward compatibility. Also I think (if at all possible) going for an automated reformating that agrees with the set of flake8 plugins currently used by ROS 2 would allow backports making flake8 happy and more consistent style moving forward.Īn example for the quotes issue, black offers a way to avoid reformatting quotes:ĭon’t normalize string quotes or prefixes. Regarding the “previous distros impact” question, ROS 2 linters evolve from one distro to the next and it’s not uncommon that code from a distro doesn’t pass the linter tests of another distro ( waving at uncrustify). ![]() The quotes issue was mentioned but there are likely multiple others that would need to be made visible before a decision can be made. A way to run that automatically on each PR that gets opened would be very convenient too.Īs far as the style is concerned, it looks like a precise list of the kind of resulting changes to the ROS 2 code base would be useful to see what the extent of the difference with the ROS 2 style is. Thanks for starting this thread and ament_black! Having a way to do automatic formatting in Python would be tremendous fixing style is always cumbersome and is a significant component of PRs iteration. ![]()
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