Python协程yield 的相关内容

文章 2016-12-08 来自：开发者社区

Python协程：从yield/send到async/await

这个文章理好了脉落。 http://python.jobbole.com/86069/ 我练习了一番，感受好了很多。。。 Python由于众所周知的GIL的原因，导致其线程无法发挥多核的并行计算能力（当然，后来有了multiprocessing，可以实现多进程并行），显得比较鸡肋。既然在GIL之下，同一时刻只能有一个线程在运行，那么对于CPU密集的程序来说，线程之间的切换开销就成了拖累，而以I....

文章 2016-11-11 来自：开发者社区

理解Python的协程机制-Yield

根据PEP-0342 Coroutines via Enhanced Generators，原来仅仅用于生成器的yield关键字被扩展，成为Python协程实现的一部分。而之所以使用协程，主要是出于性能的考虑：一个活跃的Python线程大约占据8MB内存，而一个活跃线程只使用1KB不到内存。对于IO密集型的应用，显然轻量化的协程更适用。概述原来，yield是一个statement，即和re.....

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