What pattern of event driven procession does asyncio implement?

Question

asyncio is an event driven core lib of python 3.4. I know twisted, a similar lib for asyncio, implements the Reactor pattern, but what kind of pattern does asyncio implement?

Answer 1

Well, it uses reactor for posix. Windows implementation has proactor event loop too.

Answer 2

As @AndrewSvetlov answered, Python already will select the most performant selector for you, depending on your operating system. Different selector event loops will be, ensuring to get the tightest loop, the most performant selector available on your operating system. So it implements both patterns.