python-trio / python-trio/trio

"Native" async generator-based context managers do not get KI protected

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Python
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Description

This test code fails both currently_ki_protected assertions.

import trio
from async_generator import asynccontextmanager

@trio.hazmat.enable_ki_protection
@asynccontextmanager
async def bar():
	assert trio.hazmat.currently_ki_protected()
	yield 1234
	assert trio.hazmat.currently_ki_protected()
	
async def foo():
	async with bar() as num:
		assert num == 1234
trio.run(foo)

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the supplied async generator-based context-manager example and inspect the interaction between trio.hazmat.enable_ki_protection and async_generator.asynccontextmanager. Done means both currently_ki_protected() assertions pass when the example is run with trio.run(foo).

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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