asyncio - 3.4 has event driven built in goodness trollius - a backport of the 3.4 asyncio library for python 2.7 also take a look at Pulsar its an event driven

asyncio - 3.4 has event driven built in goodness trollius - a backport of the 3.4 asyncio library for python 2.7 also take a look at Pulsar its an event driven / Actor model concurrency framework that supports 2.7 and up using asyncio and trollius