At 08:16 AM 6/1/2005 -0700, Guido van Rossum wrote:
>I hope that I've got the rewrite of PEP 343 to include generator
>extensions right now. I've chosen the 'with' keyword. Please review
>here; I think this is ready for review by the unwashed masses. :-)
>
> http://www.python.org/peps/pep-0343.html
Looks great. A few questions/comments:
* What's the rationale for raising TypeError from close()? Wasn't
RuntimeError discussed previously for that role? (and it's also used by
the with_template example) OTOH, maybe that means we want a
ControlFlowError or some such that can be used for both.
* The "opening" example under "Generator Decorator" seems to be missing a
try/finally block.
* The transaction handler could also be written as:
@with_template
def transactional(db):
db.begin()
try:
yield db
except:
db.rollback()
else:
db.commit()
at least, if I understand it correctly.
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