On Thu, Mar 6, 2014 at 3:03 PM, Skip Montanaro <skip@pobox.com> wrote:
On Thu, Mar 6, 2014 at 2:51 PM, Nelle Varoquaux
<nelle.varoquaux@gmail.com> wrote:
> The convention is to use a simple _.
>
>  mode, _, dev, nlink, uid, gid, size, _, _, _ = os.stat("/etc/hosts")

Which is "pylint-compliant", but removes any description to future
readers (who might decide to use them) what the meaning of those
various unused values are.

Just to bikeshed a bit: There are common cases where a bare "_" really is a good solution. E.g.

something = [object() for _ in range(10)]

It's immediately clear a) what "_" is, and b) that it's unused.  "for _i in range(10)" is more jarring in that particular case, i.m.h.o.

I do agree that "_descriptive_name" is better in many situations.

I'd just argue for a "prefer this, but use your best judgement" type guideline rather than a strict rule.

Then again, I'm not actively involved in development, so I probably shouldn't hold too much of an opinion either way.
Cheers,
-Joe