Dima Tisnek added the comment:
@Yuri, this bug doesn't require `gather`, here's a version with futures and
explicit await's instead. It produces same output:
```
import asyncio
async def generator():
while True:
x = yield 42
print("received", x)
await asyncio.sleep(0.1)
async def user(name, g):
print("sending", name)
await g.asend(name)
async def helper():
g = generator()
await g.asend(None)
u0 = asyncio.ensure_future(user("user-0", g))
u1 = asyncio.ensure_future(user("user-1", g))
u2 = asyncio.ensure_future(user("user-2", g))
await u0
await u1
await u2
if __name__ == "__main__":
asyncio.get_event_loop().run_until_complete(helper())
```
Same with `asyncio.get_event_loop().create_task` as well.
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<http://bugs.python.org/issue30773>
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