New submission from Dima Tisnek:
MRE
```
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)
await asyncio.gather(*(user(f"user-{x}", g) for x in range(3)))
if __name__ == "__main__":
asyncio.get_event_loop().run_until_complete(helper())
```
Produces output:
```
sending user-0
received user-0
sending user-1
sending user-2
received None
received None
```
Expected output (some variance allowed):
```
sending user-0
received user-0
sending user-1
sending user-2
received user-1
received user-2
```
Initial report / discussion:
https://mail.python.org/pipermail/async-sig/2017-June/000293.html
----------
components: asyncio
messages: 296931
nosy: Dima.Tisnek, yselivanov
priority: normal
severity: normal
status: open
title: async generator receives wrong value when shared between coroutines
type: behavior
versions: Python 3.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue30773>
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