asyncio: Support PEP 492. Issue #24017.
diff --git a/Lib/asyncio/futures.py b/Lib/asyncio/futures.py
index 74a99ba..d06828a 100644
--- a/Lib/asyncio/futures.py
+++ b/Lib/asyncio/futures.py
@@ -19,6 +19,7 @@
_FINISHED = 'FINISHED'
_PY34 = sys.version_info >= (3, 4)
+_PY35 = sys.version_info >= (3, 5)
Error = concurrent.futures._base.Error
CancelledError = concurrent.futures.CancelledError
@@ -387,6 +388,9 @@
assert self.done(), "yield from wasn't used with future"
return self.result() # May raise too.
+ if _PY35:
+ __await__ = __iter__ # make compatible with 'await' expression
+
def wrap_future(fut, *, loop=None):
"""Wrap concurrent.futures.Future object."""