[issue24004] avoid explicit generator type check in asyncio
Stefan Behnel
report at bugs.python.org
Sat May 30 11:26:32 CEST 2015
Stefan Behnel added the comment:
I found one more place in asyncio.coroutines, around line 190 in the coroutine() decorator:
if inspect.isgeneratorfunction(func):
coro = func
else:
@functools.wraps(func)
def coro(*args, **kw):
res = func(*args, **kw)
if isinstance(res, futures.Future) or inspect.isgenerator(res):
res = yield from res
return res
The wrapped isgenerator() check should be replaced by an Awaitable ABC check, e.g. this works for me:
"""
res = func(*args, **kw)
if isinstance(res, futures.Future) or inspect.isgenerator(res):
res = yield from res
+ else:
+ await_res = getattr(res, '__await__', None)
+ if await_res is not None:
+ res = yield from await_res()
return res
"""
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<http://bugs.python.org/issue24004>
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