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https://issues.apache.org/jira/browse/ARROW-5176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16827264#comment-16827264
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Neal Richardson commented on ARROW-5176:
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+1 for this, and I'll go further and propose a pre-commit hook to run `black`
so that developers don't have to waste energy thinking about linting. At a
minimum we should add a pre-commit hook that runs flake8 (per the [dev
instructions|https://github.com/apache/arrow/blob/master/docs/source/developers/python.rst#coding-style]).
I got a Travis failure for linting, and IMO that should never happen.
> [Python] Automate formatting of python files
> --------------------------------------------
>
> Key: ARROW-5176
> URL: https://issues.apache.org/jira/browse/ARROW-5176
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Python
> Reporter: Benjamin Kietzman
> Priority: Minor
>
> [Black](https://github.com/ambv/black) is a tool for automatically formatting
> python code in ways which flake8 and our other linters approve of. Adding it
> to the project will allow more reliably formatted python code and fill a
> similar role to {{clang-format}} for c++ and {{cmake-format}} for cmake
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