Ivan, what you’re talking about is subjective code formatting, and lends
itself to extreme bikeshedding and little consensus. Django already has a
formatting standard that mergers try to enforce at review and commit time.
But it’s time consuming, prone to missing things, and requires lots of back
and forth.

Not having to think of formatting at all, either as a developer or
reviewer, is a major productivity win. Even if some of the formatting
choices are not agreeable.

On Wed, 17 Apr 2019 at 03:38, 'Ivan Anishchuk' via Django developers
(Contributions to Django itself) <django-developers@googlegroups.com> wrote:

> My two cents: black's mostly ok but I'm against any auto-formatting. Code
> style is much more than whitespace arrangement, it requires looking,
> creative thinking, judging, and sometimes actually compromising rules and
> looks for readability while the usual attitude with such tools is "I have
> this autoformatter tool so I don't have to think about style anymore, see,
> all my whitespace is nice and shining". Using some helpers in your favorite
> editor is great but relying on automatics without looking is almost
> completely counter-productive.
>
> I find that PR autocommenter is a great way to keep issues detectable by
> flake8/pylint to a minimum.
>
> Ivan.
>
> On Sat, Apr 13, 2019 at 6:35 PM Herman S <herman.schis...@gmail.com>
> wrote:
>
>> Hi.
>>
>> I propose that Django starts using 'black' [0] to auto-format all Python
>> code.
>> For those unfamiliar with 'black' I recommend reading the the projects
>> README.
>> The short version: it aims to reduce bike-shedding and non value-adding
>> discussions; saving time reviewing code; and making the barrier to entry
>> lower
>> by taking some uncompromissing choices with regards to formatting.  This
>> is
>> similar to tools such as 'gofmt' for Go and 'prettier' for Javascript.
>>
>> Personally I first got involved contributing to Django couple of weeks
>> back,
>> and from anecdotal experience I can testify to how 'formatting of code'
>> creates
>> a huge barrier for entry. My PR at the time went multiple times back and
>> forth
>> tweaking formatting. Before this, I had to research the style used by
>> exploring
>> the docs at length and reading at least 10-20 different source – and even
>> those
>> were not always consistent. At the end of the day I felt like almost 50%
>> of the
>> time I used on the patch was not used on actually solving the issue at
>> hand.
>> Thinking about code formatting in 2019 is a mental energy better used for
>> other
>> things, and it feels unnecessary that core developers on Django spend
>> their time
>> "nit-picking" on these things.
>>
>> I recently led the efforts to make this change where I work. We have a
>> 200K+
>> LOC Django code-base with more than 30K commits. Some key take-aways: it
>> has
>> drastically changed the way we work with code across teams, new engineers
>> are
>> easier on-boarded, PR are more focused on architectural choices and
>> "naming
>> things", existing PRs before migration had surprisingly few conflicts and
>> were
>> easy to fix, hot code paths are already "blameable" and it's easy to
>> blame a
>> line of code and go past the "black-commit", and lastly the migration went
>> without any issues or down-time.
>>
>> I had some really fruitful discussions at DjangoCon Europe this week on
>> this
>> very topic, and it seems we are not alone in these experiences. I would
>> love to
>> hear from all of you and hope that we can land on something that will
>> enable
>> *more* people to easier contribute back to this project.
>>
>> I've set up how this _could_ look depending on some configurables in
>> Black:
>>
>> * Default config: https://github.com/hermansc/django/pull/1
>> * Line length kept at 119: https://github.com/hermansc/django/pull/3
>> * Line length kept at 119, no string normalization:
>> https://github.com/hermansc/django/pull/2
>>
>> Please have a look at the Black documentation. It explains the benefits
>> better
>> than I possibly could do here.
>>
>> With kind regards,
>> Herman Schistad
>>
>> [0]: https://github.com/ambv/black
>>
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