"""

https://docs.python.org/3/library/asyncio.html

asyncio is often a perfect fit for IO-bound and high-level structured network code.

"""

import asyncio

import time

# def 前面加上 async 就會變成 coroutine function (有非同步的功能)

async def something(num):

print('第 {} 任務，第二步'.format(num))

if __name__ == "__main__":

start = time.time()

tasks = [something(i) for i in range(5)]

asyncio.run(asyncio.wait(tasks))

print('TIME: ', time.time() - start)