Python asyncio TaskGroups & Structured Concurrency
Python 3.11's TaskGroup and ExceptionGroup bring structured concurrency to asyncio. Master TaskGroups, ExceptionGroup handling with except*, anyio for backend-agnostic code, cancellation scopes, and asyncio.shield for building robust, composable async applications.
asyncio.TaskGroup. A developer uses it as async with asyncio.TaskGroup() as tg: tg.create_task(task_a()); tg.create_task(task_b()). What happens if task_a() raises an exception?asyncio.TaskGroup, if any task raises an exception, all remaining tasks are cancelled, and the context manager raises an ExceptionGroup (Python 3.11+) containing all exceptions from failed tasks. This is structured concurrency: tasks form a scope, and the scope doesn't exit until all tasks complete or all are cancelled.Frequently Asked Questions
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