This is so nostalgic. I actually met my cofounder on github due to a discussion on twisted vs gevent back in 2011. I had my inital code in twisted and he wrote the gevent piece. Fast forward 12 years and we still use gevent at http://plivo.com :)

Some of our initial code snippets:

# Twisted

def __protocolSendRaw(self, name, args=""): deferred = defer.Deferred() self.__EventQueue.append((name, deferred)) self.rawSend("%s %s" % (name, args)) return deferred

# Gevent

def _protocol_sendmsg(self, name, args=None, async=False): if self._closing_state: return Event() _async_res = gevent.event.AsyncResult() _uuid, event = _async_res.get() return event