On Wed, Jun 18, 2008 at 10:55:32PM -0700, Alex Martelli wrote: -> On Wed, Jun 18, 2008 at 9:58 PM, Cesare Di Mauro <[EMAIL PROTECTED]> wrote: -> > Very very, interesting. Thanks. :) -> > -> > Somebody thinks that Python is unsuitable to implement a DSL: IMO your example prove the contrary. :D -> -> As long as you're willing to do the "DSL" within the strictures of -> Python syntax, it's OK - not quite as flexible as LISP or Scheme or -> even Ruby, but better than most;-). I did design and implement "DSL"s -> in Python (mostly specialized class trees with suitable metaclasses, -> decorators &c) in many jobs in my recent past, I'll admit -- it never -> feels as free-flowing as Scheme did back when I used THAT, but, close -> enough to make my jobs successful!-)
It's pretty easy to put a simple syntax remapper around Python, too; this is what twill does. So, for example, this: -- setlocal username <your username> setlocal password <your password> go http://www.slashdot.org/ formvalue 1 unickname $username formvalue 1 upasswd $password submit code 200 # make sure form submission is correct! -- translates very directly to --- setlocal('username', '...') setlocal('password', '...') go('http://www.slashdot.org/') formvalue('1', 'unickname', username) formvalue('1', 'upasswd', password) submit() code('200') --- which is DSL-ish enough for me... More generally, I've never understood why some people insist that certain features make Ruby better for DSLs -- are code blocks really that important to DSLs? Or is it just the lack of parens?? --titus -- C. Titus Brown, [EMAIL PROTECTED] _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
