How do you safely execute blocking code from an async function
Tests whether you know how to prevent event loop blocking by offloading sync work. Name asyncio.to_thread or run_in_executor, explain ThreadPoolExecutor scheduling, and note when processes beat threads.
Tests your understanding of event loop blocking and the specific asyncio API used to offload synchronous work. A great answer names asyncio.to_thread or loop.run_in_executor, explains that the function is scheduled in a ThreadPoolExecutor so the event loop keeps running, and distinguishes CPU-bound work that may need a ProcessPoolExecutor. Red flag: suggesting you can safely call the blocking function directly, wrap it in create_task, or await a non-coroutine without using a thread pool.
Read the original → docs.python.org
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- #asyncio
- #fastapi
- #concurrency
- #event-loop
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