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What Bret said, here (perhaps) more concise: async def main(): f1 = ensure_future(say("two", 2)) f2 = ensure_future(say("one", 1)) # at this point both are running await f1 await f2 Note that current event loop is automatic since Python 3.6; Futures are higher level abstraction, but I think it's better to start with futures :) On Mon, 27 Aug 2018 at 5:47 PM, saurabh singh <saurabh3460@gmail.com> wrote:
my question is 1st one is concurrent but 2nd one is not, how and please correct me, what i miss and what should i know more thank you
import asyncio
# 1st code async def say(what, when): await asyncio.sleep(when) print(what)
loop = asyncio.get_event_loop()
loop.create_task(say('first hello', 2)) loop.create_task(say('second hello', 1))
loop.run_forever() loop.close()
''' result
second hello first hello '''
# 2nd code async def say(what, when): await asyncio.sleep(when) print(what)
async def main(loop): yield from loop.create_task(say('first hello', 2)) yield from loop.create_task(say('second hello', 1)) print('close')
loop = asyncio.get_event_loop() loop.run_until_complete(main(loop)) loop.close()
''' result
first hello second hello '''
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