I played with it some time ago. Actually, original code with few changes works fine.

Here's example:

https://gist.github.com/germn/6b2f8a1afbfc322daa01365cacd1d9ad

Test it:

import asyncio
from acontextlib import acontextmanager


state = []

@acontextmanager
async def woohoo():
    state.append(1)
    yield 42
    state.append(999)


async def main():
    async with woohoo() as x:
        assert state == [1]
        assert x == 42


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

Has anyone tried to build an asynchronous version of @contextmanager? Is it even possible... given the use of yield?

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