How should another thread interact with a running asyncio event loop?

Uses documented thread-safe scheduling APIs and keeps event-loop objects confined.

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Most asyncio objects are not safe to manipulate directly from another OS thread. To schedule a normal callback, I use loop.call_soon_threadsafe(). To submit a coroutine, I use asyncio.run_coroutine_threadsafe(), which returns a concurrent future the calling thread can observe. Tasks and futures stay owned by the loop where they were created rather than being awaited or cancelled directly elsewhere.

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Uses documented thread-safe scheduling APIs and keeps event-loop objects confined.

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Uses documented thread-safe scheduling APIs and keeps event-loop objects confined.
Most asyncio objects are not safe to manipulate directly from another OS thread. To schedule a normal callback, I use loop.call_soon_threadsafe(). To submit a coroutine, I use asyncio.run_coroutine_threadsafe(), which returns a concurrent future the calling thread can observe. Tasks and futures stay owned by the loop where they were created rather than being awaited or cancelled directly elsewhere.
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Cross-thread data transfer uses a thread-safe queue.Queue or an adapter designed for both worlds, not from the producer thread. The thread must not call from the event-loop thread and block the loop. Timeouts and cancellation need a clear direction because cancelling the concurrent future requests task cancellation but cannot undo side effects already performed.

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Calling loop methods directly from a worker thread
Using asyncio.Queue across threads
Blocking the event loop on a concurrent future

How should another thread interact with a running asyncio event loop?

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