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与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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只要你 start 了,它就一定会开始执行,
但是 start 了并不代表就会完完全全执行,可能刚执行到一半,主进程退出了,那剩下的就不会执行了。
所以这时要 join 一下,等待子进程完全执行完,所有内容都输出了,主进程才可以退出。

因为你的 p1、p2、p3 先执行的,所以一定概率能完全执行。但 p 是放在最后的,很可能刚启动就跟着主进程一起退出了。


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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