Victor Stinner wrote:
A huge part of the asyncio module is based on "yield from fut" where fut is
a Future object.
How do you write this using the PEP 3152? Do you need to call an artifical
method like "cocall fut.return_self()" where the return_self() method simply
returns fut?
In a PEP 3152 world, Future objects and the like would be
expected to implement __cocall__, just as in a PEP 492 world
they would be expected to implement __await__.
@asyncio.coroutine currently calls a function and *then* check if it should
yields from it or not:
res = func(*args, **kw)
if isinstance(res, futures.Future) or inspect.isgenerator(res):
res = yield from res
To accommodate the possibility of func being a cofunction,
you would need to add something like
if is_cofunction(func):
res = yield from costart(func, *args, **kw)
else:
# as above
--
Greg
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