Victor Stinner wrote:
I'm still trying to understand how the PEP 3152 would impact asyncio. Guido suggests to replace "yield from fut" with "cocall fut()" (add parenthesis) and so add a __cocall__() method to asyncio.Future. Problem: PEP 3152 says "A cofunction (...) does not contain any yield or yield from expressions".
A __cocall__ method doesn't have to be implemented with a cofunction. Any method that returns an iterator will do, including a generator. So a Future.__cocall__ that just invokes Future.__iter__ should work fine.
How is it possible to suspend a cofunction if it's not possible to use yield?
The currently published version of PEP 3152 is not really complete. A few things would need to be added to it, one of them being a suspend() builtin that has the same effect as yield in a generator-based coroutine. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
