[Python-Dev] A grammatical oddity: trailing commas in argument lists -- continuation
ncoghlan at gmail.com
Tue Dec 14 01:31:01 CET 2010
On Tue, Dec 14, 2010 at 5:39 AM, Mark Dickinson <dickinsm at gmail.com> wrote:
> On Mon, Dec 13, 2010 at 3:51 PM, R. David Murray <rdmurray at bitdance.com>
> > It seems like the status quo is fine. I wouldn't object to it being
> > made more consistent. I would object to removing the existing cases.
> Same here, on all three counts. In one of the projects I'm currently
> working on, we've settled on a style that does quite a lot of:
> my_thing = Thing(
> foo = Foo(arg1, arg2, ...),
> bar = Bar(arg3, arg4, ...),
> and I've found the trailing comma very convenient during refactoring
> and API experimentation. (There's still good fun to be had arguing
> about the indentation of that closing parenthesis, though.)
Another valid use case that occurred to me is building up a string-keyed
mapping = dict(
So, on reflection, removing the existing cases where it is supported is
certainly unreasonable, which makes the consistency argument that much
For the record, I reopened issue #9232 (noting the lack of consensus), and
(as someone suggested on the tracker) changed the resolution on the other
one to be as a duplicate of #9232.
P.S. As I noted in the logging discussion, my email access is going to be a
bit sketchy for the next couple of weeks.
Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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