foreve结束

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import asyncio from threading import Thread import time   print('main start:',time.time())   async def start(i):     print(i, time.time())     await asyncio.sleep(i)     b=run(i)     if b is not None:         await asyncio.wait(b)     else:         print('all complete',time.time())         return True   def run(content):     if content<3:         tasks=[]         tasks.append(start(content+1))         tasks.append(start(content+1))         tasks.append(start(content+1))         return tasks     print('end running', time.time())   def start_loop(loop):     asyncio.set_event_loop(loop)     loop.run_forever()   new_loop=asyncio.new_event_loop() t=Thread(target=start_loop,args=(new_loop,)) t.start()   a=asyncio.run_coroutine_threadsafe(start(1),new_loop)   while a._state !='FINISHED':     time.sleep(1)     print(a._state)   print(new_loop.is_closed(),'checking') new_loop.stop() new_loop._csock.send(b'\0') print(new_loop.is_closed(),'checking')