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Welcome! Happy to see you willing to make the project better. Use the badge in your project’s README.md: This vastly improves the formatting of our code. Kenneth Reitz, creator of requests and pipenv: Hynek Schlawack, creator of attrs, core developer of Twisted and CPython:Īn auto-formatter that doesn’t suck is all I want for Xmas! I can now do refactorings in about 1% of the keystrokes that it would have taken me previously when we had no way for code to format itself.īlack is opinionated so you don’t have to be. I can’t think of any single tool in my entire programming career that has given me a bigger productivity increase by its introduction.
![python code formatter python code formatter](https://i.stack.imgur.com/b4D76.png)
The following organizations use Black: Facebook, Dropbox, Mozilla, Quora, Duolingo. The following notable open-source projects trust Black with enforcing a consistent code style: pytest, tox, Pyramid, Django Channels, Hypothesis, attrs, SQLAlchemy, Poetry, PyPA applications (Warehouse, Bandersnatch, Pipenv, virtualenv), pandas, Pillow, Twisted, LocalStack, every Datadog Agent Integration, Home Assistant, Zulip, and many more. Applying those defaults will have your code in compliance with many other Black formatted projects. Pro-tip: If you’re asking yourself “Do I need to configure anything?” the answer is “No”. You can find more details in our documentation:Īnd if you’re looking for more general configuration documentation: This is especially useful for specifying custom -include and -exclude/ -force-exclude/ -extend-exclude patterns for your project. What seems like a bug might be intended behaviour.īlack is able to read project-specific default values for its command line options from a pyproject.toml file. Please refer to this document before submitting an issue just like with the document above. As a mature tool, Black does make some exceptions to rules it otherwise holds. This was fine at the time as it made the implementation simpler and there were not many users anyway. What seems like a bug might be intended behaviour.Įarly versions of Black used to be absolutist in some respects. Please refer to this document before submitting an issue. Our documentation covers the current Black code style, but planned changes to it are also documented. It doesn’t take previous formatting into account (see Pragmatism for exceptions). Style configuration options are deliberately limited and rarely added.
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If you’re feeling confident, use -fast.īlack is a PEP 8 compliant opinionated formatter. That being said, no drastic stylistic changes are planned, mostly responses to bug reports.Īlso, as a safety measure which slows down processing, Black will check that the reformatted code still produces a valid AST that is effectively equivalent to the original (see the Pragmatism section for details). What this means for you is that until the formatter becomes stable, you should expect some formatting to change in the future. This is made explicit by the “Beta” trove classifier, as well as by the “b” in the version number. Things will probably be wonky for a while. Black has a comprehensive test suite, with efficient parallel tests, and our own auto formatting and parallel Continuous Integration runner. Python -m black įurther information can be found in our docs:īlack is already successfully used by many projects, small and big. To get started right away with sensible defaults:
#Python code formatter install#
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. If you want to format Python 2 code as well, install with pip install black. Watch the P圜on 2019 talk to learn more.īlack can be installed by running pip install black. Try it out now using the Black Playground. Formatting becomes 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 time and mental energy for more important matters.īlackened code looks the same regardless of the project you’re reading. In return, Black gives you speed, determinism, and freedom from pycodestyle nagging about formatting. By using it, you agree to cede control over minutiae of hand-formatting. Black is the uncompromising Python code formatter.