[Numpy-discussion] what to clean up, what to leave as is

Kevin Sheppard kevin.k.sheppard at gmail.com
Fri Jan 24 12:41:33 EST 2020

I think some types of clean-ups, for example, imports, are pretty low cost,
low risk and don't have much bearing on and it might be best to do them all
at once.

f-strings are also pretty simple but can be abused to the detriment of code
around (for example, moving a string defined in a variable outside a
function into the function just so it can have an f-string).

I think more general code clean-up, for example, removing list around
iterators (e.g., list(map(f, i)) should be mostly avoided unless there is a
compelling case to prefer the iterator for performance reasons.


On Fri, Jan 24, 2020 at 5:29 PM Charles R Harris <charlesr.harris at gmail.com>

> On Fri, Jan 24, 2020 at 9:46 AM Ralf Gommers <ralf.gommers at gmail.com>
> wrote:
>> Hi all,
>> It's great to see that people are jumping at the chance to clean up
>> Python 2 support. I would however caution about overdoing it on other
>> cleanups. As a reminder, we normally do not want pure style PRs (e.g. PEP8
>> cleanups), because they make the code history (git blame, commits on
>> particular files, etc.) harder to work with, have review overhead, and may
>> introduce new bugs for little gain.
>> Imho that same rationale applies to things like converting strings to
>> f-strings. There's of course some gray area, for example removing "from ...
>> import *" can guard against accidentally exposing new API, so can be
>> considered a valuable cleanup.
>> As a separate/additional point: numpy.distutils and numpy.f2py are
>> largely untested, PRs are hard to test locally because of platform-specific
>> code, and changes often introduce regressions. So even for some cleanups
>> that are okay for other files, please do not do them on those modules.
> I do like f-strings, they can make the code simpler and more readable.
> Chuck
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