looking for tips on how to implement "ruby-style" Domain Specific Language in Python

Kay Schluehr kay.schluehr at gmx.net
Wed Jan 7 18:11:29 CET 2009

On 7 Jan., 16:50, J Kenneth King <ja... at agentultra.com> wrote:

> Python expressions are not
> data types either and hence no macros -- I can't write a python function
> that generates python code at compile time.

Have you ever considered there are languages providing macros other
than Lisp? Macros have nothing to do with homoiconcity.

> I can only write a python
> program that parses some other string and generates code that can be run
> by another interpreter.

No, it is the same interpreter and it is also possible to modify
python parsers on the fly. This is just not possible with Pythons
builtin parser.

> Consider:
> for i in range(0, 100):
>     do_something_interesting(i)
> That's a pretty straight forward Python expression, but I can't do
> anything with it -- it's not a unit of data, it's a string.
> The distinction is not subtle by any means.

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