A gentle introduction to asyncio
summary
Covers Python 3.4’s asyncio as a concrete replacement for older async approaches, explains generators-as-coroutines, futures/tasks and the event loop APIs, builds a working echo server/client using stream reader/writer pairs and shows it handling many concurrent connections without threads, compares to Twisted/Gevent and notes Windows IOCP support, points to Tulip/Trollius backports and Autobahn WebSocket ports, and demonstrates that the example code runs end-to-end.
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chapters (12)
- 0:00Introduction
- 3:51Async I/O concepts
- 7:27Scaling and trade-offs
- 10:56Threading and processes
- 13:57Python concurrency history
- 18:47The Twisted framework
- 23:51Asyncio design goals
- 26:52Event loop internals
- 33:20Generators and yield from
- 40:26Coroutines and futures
- 47:55Transports and streams
- 54:56Conclusion and resources
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