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

Nick Coghlan ncoghlan at gmail.com
Mon Dec 13 14:25:58 CET 2010

On Mon, Dec 13, 2010 at 9:44 PM, Jan Kaliszewski <zuo at chopin.edu.pl> wrote:

I think that seeing that:

 def f(a, b): ...  def f(a, *, b): ...  def f(a, *args, b): ...  x(1, 2, 3, 4, z=5)  x(1, *(2,3,4), z=5)

As per the closure of the affected tickets, the likely outcome of such a discussion would be the deprecation and subsequent removal of support for the following two options:

def f(a, b,): ...
x(1, 2, 3, 4, z=5,): ...

Function arguments are not lists. Even when separated onto multiple lines, the closing "):" should remain on the final line with other content.

That would be a lot of hassle to get rid of something that people probably aren't doing in the first place, though.

Regards, Nick.

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

More information about the Python-Dev mailing list