asyncio.sleep 和 time.sleep 的区别
time.sleep是针对整个线程，整个线程会挂起，不再执行任何操作。 asyncio.sleep是针对当前协程而言，告诉事件循环：请去执行别的操作，相当于模拟了一次网络IO，不会阻塞其他协程的执行。 import time import asyncio async def hello(): print('Hello ...') await asyncio.sleep(5) # time.sleep(5) print('... World!') async def main(): await asyncio.gather(hello(), hello()) loop = asyncio.get_event_loop() loop.run_until_complete(main()) 运行结果： Hello ... Hello ... ... World! ... World! import time import asyncio async def hello(): print('Hello ...') # await asyncio.sleep(5) time.sleep(5) print('... World!') async def main(): await asyncio.gather(hello(), hello()) loop = asyncio.get_event_loop() loop.run_until_complete(main()) 运行结果： Hello ... ... World! Hello ... ... World!