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

Georg Brandl g.brandl at gmx.net
Sat Dec 18 22:04:02 CET 2010

Am 13.12.2010 21:08, schrieb Glenn Linderman:
> On 12/13/2010 11:39 AM, Mark Dickinson wrote:
>> 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.)
> Clearly it needs to be indented one level, because it is a continuation 
> of the prior line, just like the foo and bar and ... lines are 
> continuations and therefore indented.

Clearly Emacs is superior to Vim because (insert some random fact here).

Clearly the only thing that is clear about coding style details (even if
we all more or less agree on PEP 8) is that it is a matter of personal


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