trapping errors in function call syntax

[Carsten Haese]

On Mon, 2006-02-13 at 14:13, Avi Kak wrote:
> Hello:
> 
>    Suppose I write a function that I want to be called
>    with ONLY keyword argumnts, how do I raise an
>   exception should the function get called with 
>   what look like position-specfic arguments?
> 
>   Any help would be appreciated.

Something like this should do the trick:

def f(*args, **kwargs):
  if args: raise TypeError, "Please use keyword arguments."
  ...

-Carsten