如何在python中实现异步非阻塞

from time import time, sleep
 
"""
    同步操作
"""
def app01():
    
    def fn1():
        sleep(3)
        print("fn1 ...")
 
    def fn2():
        sleep(2)
        print("fn2 ...")
 
    def fn3():
        sleep(5)
        print("fn3 ...")
 
    fn1()
    fn2()
    fn3()
 
"""
    asyncio
"""
def app02():
    import asyncio
 
    async def fn1():
        await asyncio.sleep(3)
        print("fn1 ...")
 
    async def fn2():
        await asyncio.sleep(2)
        print("fn2 ...")
 
    async def fn3():
        await asyncio.sleep(5)
        print("fn3 ...")
 
    loop = asyncio.get_event_loop()
 
    tasks = [
        fn1(),
        fn2(),
        fn3()
    ]
 
    loop.run_until_complete(asyncio.wait(tasks))
    loop.close()
 
if __name__ == '__main__':
    startTime = time()
 
    # app01()
    app02()
 
    endTime = time()
    print('花费了', str(endTime - startTime), '秒')
 
# 第一个 10s
# 第二个 5s