[Python-Dev] A grammatical oddity: trailing commas in argument lists -- continuation (original) (raw)

Mark Dickinson dickinsm at gmail.com
Mon Dec 13 20:39:32 CET 2010

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

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