小编And*_*sky的帖子

从Python 3.5开始,关键字await和async语言都被引入.现在,我更像是一个Python 2.7人,而且我已经在相当长一段时间内避免使用Python 3了,所以asyncio对我来说这是一个新手.根据我的理解,它似乎await/async与它们在ES6(或JavaScript,ES2015中的工作方式)的工作方式非常相似,但是您想要称之为.

这是我用来比较它们的两个脚本.

import asyncio

async def countdown(n):
    while n > 0:
        print(n)
        n -= 1
        await asyncio.sleep(1)

async def main():
    """Main, executed in an event loop"""

    # Creates two countdowns
    futures = asyncio.gather(
        countdown(3), 
        countdown(2)
    )
    # Wait for all of them to finish
    await futures
    # Exit the app
    loop.stop()

loop = asyncio.get_event_loop()
asyncio.ensure_future(main())
loop.run_forever()

function sleep(n){
    // ES6 does not provide native sleep method with promise support …