[Python-Dev] A grammatical oddity: trailing commas in argument lists -- continuation

[Mark Dickinson]

On Mon, Dec 13, 2010 at 3:51 PM, R. David Murray <rdmurray at bitdance.com> wrote:
> 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.)

Mar