[Python-Dev] removing nested tuple function parameters

[Florian Weimer]

* Brett Cannon:

> Is anyone truly attached to nested tuple function parameters; ``def
> fxn((a,b)): print a,b``?  At one of the PyCon sprints Guido seemed
> okay with just having them removed when Jeremy asked about ditching
> them thanks to the pain they caused in the AST branch.

Will

  def fxn((a,b,),): print a,b

continue to work?  (I'm not sure if the problems are syntax or
representation of the parse tree; I don't know what's going on on that
AST branch.)