Symbols as parameters?

[Martin Drautzburg]

Carl Banks wrote:

> I see.  Well, Python is a poor choice for defining an internal DSL
> (i.e., DSL using the general language's syntax), because it's
> (deliberately) rigid in both grammar and semantics.  

I had this impression too.
 
> Paul McGuire should be by to recommend PyParsing shortly.

I looked it up and it seems to be about parsing strings. This is not
what I am looking for as it would create a separate world outside of
python. But I haven't looked deeply yet.