On Fri, 8 Oct 2004, Leopold Toetsch wrote:
> Guido is to blame. Python generators/coroutines work like this: > > iter = coro() # first time calling > for x = iter() ...# iterate > > And that's what Parrot is doing too with the --python switch. But there > is more ugliness: Python returns "None" if the generator is left through > the end and a StopIteration is thrown (which you have to catch). > > That's all really messy and needs definitely some cleanup. OTOH it was > the most straight forward translation of Python bytecode. I get it now. Thanks. When you have the AST handy, it's easier and cleaner to just produce a different set of opcodes when you know you're in a generator. Instead of returning None at the end, pirate just directly raises a StopIteration exception. That seems to me like it's a lot cleaner. Is there any way we could get a temporary --pirate flag that did everything --python did EXCEPT for the generator stuff? - Michal http://withoutane.com/
