Python asyncio

Question

import asyncio

class Application:
    def __init__(self):
        pass 
    
    async def sleep(self, a):
        await asyncio.sleep(1)
        a = a + 1
        return a

    async def main(self):
        print("hello async ...\n")
        a = 23
        while(True):
            a = await self.sleep(a)
            print(a)

    def run(self):
        loop = asyncio.get_event_loop()
        loop.run_until_complete(self.main())

app = Application()
app.run()

与 nodejs 类似，不同的是 nodejs 本身就是运行在 loop 当中，而 python 需要手动开启 loop。整个应用运行在一个 loop 当中