asyncio in Python 3.13: TaskGroups, ExceptionGroups, and Real-World Patterns
Python 3.13 has finalized the structured-concurrency model that began with TaskGroups in 3.11 — and the result is asyncio code that is dramatically easier to reason about, debug, and operate in production. This is a practical guide to the patterns that work in 2026: TaskGroups for concurrent operations, ExceptionGroups for handling multiple failures cleanly, the cancellation model that finally makes sense, and the production patterns that experienced asyncio developers reach for....
