syntax for preset locals without using dummy args with defaults

[Andrew Dalke]

Bengt Richter wrote:
> My first choice would be a new keyword to provide a place other than the parameter
> list to specify the def-time code that generates the local bindings in question
> (e.g., z above):
> 
>      def foo(x, y=default):
>          preset: z=some_expression
>          ...

Tangenting somewhat, here's one which doesn't have a new keyword.
Kinda ugly though

def spam(x, y = default):
   def z = some_expression
   return x*y*z

Ugh, ugh, no, I take that suggestion back.  Blech.

					Andrew
					dalke at dalkescientific.com