So to summarise the discussion so far:
1. automated code formatting will be a great boon - reduce work, lower
barrier for new committers, reduce work for the fellows, etc.
2. there are issues with git history in doing "the great commit".
3. there are issues with black's formatting choices.
So to address 1:
I am entirely +1 for automated code formatting to take the work out of
Can such a tool be automated into, say, github in a way that doesn't
create extra commit noise?
To address 2:
I side with those who favour a progressive solution, whereby new code
only has the new tool applied.
That said, there might be cause to suggest a deadline [perhaps a N.0
release?] where all remaining code is "cleaned".
And finally 3:
My perspective on the goal of any code formatting tool is this:
When we as developers approach a piece of code, our goal is the
understand its intent and its implementation of that intent.
In the process of reaching that, we pass through the stages of (a)
identifying the relevant code, (b) understanding the action of the code,
and (c) understanding the intent of the code.
Good code formatting choices will remove or reduce the cognitive load in
(b) and (c).
In my experience with using black [we use it at work], there are
numerous choices (including those demonstrated in this list already)
where it can significantly _increase_ the cognitive load in simply
parsing the code.
As simple as black can make the job of code formatting, I feel I'd
rather see a different tool that retained the benefits of "trivial code
reformatting", but still allowed us to retain some of Django's existing
code formatting rules.
(An interesting [and defensible] choice, we had a module with a lot of
strings wrapped across lines. black opted to push them onto the same
line, but NOT to merge them. This is because in Python prior to 3.7, it
would have altered the generated AST - one of the guides black uses)
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