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asyncio community, one year later

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Victor Stinner - asyncio community, one year later [EuroPython 2015] [22 July 2015] [Bilbao, Euskadi, Spain]

The asyncio project was officially launched with the release of Python 3.4 in March 2014. The project was public before that under the name "tulip". asyncio is just a core network library, it requires third party library to be usable for common protocols. One year later, asyncio has a strong community writing libraries on top of it.

The most advanced library is aiohttp which includes a complete HTTP client but also a HTTP server. There are also libraries to access asynchronously the file system, resolve names with DNS, have variables local to tasks, read-write locks, etc. There are clients for AMQP, Asterisk, ElasticSearch, IRC, XMPP (Jabber), etc. (and even an IRC server!). There are asynchronous drivers for all common databases, and even for some ORMs. As expected, there are tons of new web frameworks based on asyncio. It's also possible to plug asyncio into Gtk, Qt, gevent, eventlet, gunicorn, tornado, etc.

I will also discuss use cases of asyncio in production and benchmarks. Spoiler: asyncio is not slow.

The asyncio library also evolved to become more usable: it has a better documentation, is easier to debug and has a few new functions. There is also a port to Python 2: trollius.

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