async

async.py

import asyncio

import time

 

async def say_after(delay, what):

   await asyncio.sleep(delay)

   print(what)

 

async def main():

   task1 = asyncio.create_task(

       say_after(1, ‘hello’))

 

   task2 = asyncio.create_task(

       say_after(2, ‘world’))

 

   print(f »started at {time.strftime(‘%X’)} »)

 

   # Wait until both tasks are completed (should take

   # around 2 seconds.)

   await task1

   await task2

 

   print(f »finished at {time.strftime(‘%X’)} »)

asyncio.run(main())