New submission from Adrian Garcia Badaracco <[email protected]>:
I recently tried to use `contextvars.Context.run` w/ coroutines, expecting the
same behavior as with regular functions, but it seems that
`contextvars.Context.run` does not work w/ coroutines.
I'm sorry if this is something obvious to do with how coroutines work under the
hood, if so I'd appreciate some help in understanding why this is the expected
behavior.
```python
import asyncio
import contextvars
ctxvar = contextvars.ContextVar("ctxvar", default="spam")
def func():
assert ctxvar.get() == "spam"
async def coro():
func()
async def main():
ctx = contextvars.copy_context()
ctxvar.set("ham")
ctx.run(func) # works
await ctx.run(coro) # breaks
asyncio.run(main())
```
Thanks!
----------
components: Library (Lib)
messages: 398924
nosy: adriangb
priority: normal
severity: normal
status: open
title: contextvars.Context.run w/ coroutines gives inconsistent behavior
type: behavior
versions: Python 3.9
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Python tracker <[email protected]>
<https://bugs.python.org/issue44834>
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