python 3.x - Why don't two sequential coroutines (async functions) execute in parallel? -
so, i'm trying wrap head around async programming (in particular tornado framework), , thought i'd start basics: calling "awaiting" on 2 coroutines: from tornado.ioloop import ioloop tornado.web import application, url, requesthandler tornado.gen import sleep class testhandler(requesthandler): async def get(self): f1 = await self.test("f1") f2 = await self.test("f2") self.write(f1 + " " + f2) async def test(self, msg): in range(5): print(i) await sleep(1) # tornado's async sleep return msg app = application([url(r'/', testhandler)], debug=true) app.listen(8080) ioloop = ioloop.current() ioloop.start() the issue, however, when hit localhost:8080 in browser, , stare @ python console, don't see 2 interwoven sequences of 0 1 2 3 4 , 2 sequential sequences... i've read tornado faq over-and-over again , can't seem understand i'
