在这个以斗气大陆横行的世界，每一个大的势力宗门都有自己的杀手锏的功法，比如老牌的古族有C++这样的巨无霸语言，药族有C语言，几乎斗气大陆所有的操作系统都是用C语言做的，毕竟斗气都要靠吃丹药维持。而实力非常猛的魂族有Java这样的毁天灭地的语言，神秘莫测，势力范围也非常大，拥有广大的用户！

而斗气大陆最近十年风头最劲的当属萧族的Python语言。2007，2010，2018，三年都是排名第一。它可以做很多事情，身兼八大家族的各种功法于一身，比如爬虫，数据分析，自动化测试，运维，数据挖掘和机器学习等等！而且在机器学习领域称王称霸，独领风骚！

然后斗气大陆无奇不有，各种新的功法层出不穷！天下武功为快不破，云计算里面的排名第一go最近风起云涌，尤其是搭上了区块链这样的庞大家族，财大气粗未来前景非常看好！据说Go语言的功法里面最强的就是高并发剑招，那么我们今天来看看Python和Go的高并发之战到底差距有多大！

01.

Go语言的高并发

Go作为一门新兴的编程语言，最大特点就在于它是原生支持并发的。和传统基于 OS 线程和进程实现不同，Go语言的并发是基于用户态的并发，这种并发方式就变得非常轻量，能够轻松运行几万甚至是几十万的并发逻辑。

听起来非常牛逼啊，到时Go的高并发有多快呢，我们不如写一个最简单的Hello world来看看。

1).首先，我们写一个Hello world的函数，这个函数就干一件事，死命的打印Hello world from xx.

2).接着，我们开1000个线程(其实不是线程可以认为是协程,物理上对应一个线程)。大家可以看到开1000个这样的线程是相当相当牛逼的，一般我们在Python里面开50个线程就非常了不起了，这里Go语言轻松开1000个并发！

因为Go生下来就是斗宗的强者，天生自带并发特性。只需要用Go关键字就可以申明高并发了，非常简洁！比起其他的语言需要用外挂丹药修炼提升自己的斗气，要简洁不知道多少倍了！

3).最后，我们用time.sleep()让主线程只停留1毫秒，1毫米的时间让1000个人去死命打印hello world，我们看看结果哈:

看完上面的也许大家知道Go很能打，那短短的1毫秒Go到底能打印出多少个Hello world呢，比如我们设定一个5000吧，看看Go1毫秒能否打印出5000个Hello world!

我们还是打印HelloWorld, 这次直接打印5000个，然后限时在1毫秒内完成，看看Go能否5000个都打完？

Go 还是很强的，不仅异步的代码书写非常简单，而且效率之高让人瞠目结舌，毕竟人家是编辑器级别的并发，也就从娘胎里出来就是高并发的！

02.

Python的高并发

Python里面的高并发非Asyncio莫属，这个号称是Python3里面最有野心的库，从Python3.6开始逐渐稳定推出，到了Python3.7又进行了修正，到底跟Go会又多大的差距呢，我们来看一下:

Python的高并发协程需要靠后天的修行，也就是用库Asyncio来完成，原生的并不支持高并发！那么我们也高并发5000个任务，每个任务都是打印HelloWorld,看看需要多久的时间？

这个结果也是让我大跌眼镜，也许可能是cpu密集性这样的操作对Python来说本来就用Asyncio没有啥优势，但是无论如何这个效率确实跟Go比起来，逊色很多啊！

难怪现在很多大公司的后端开发，比如知乎的百万级的高并发的访问，慢慢从Python转为Go语言，虽然重构的代价非常大，但是长远看在性能这一条上，Go语言的优势非常明显！

当然上面的对比并不一定非常科学和严谨，毕竟Python的强项并不是高并发而是其几乎变态的全能语言，也就是说你学会Python可以干很多很多事情，而且可以跨领域的做一些事情，而Go目前只是在云计算领域占有霸主地位！

欢迎留言吱一声，说说你的看法！

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楷体_GB2312, SimKai;">点这里，进菜鸟学PythonB站大本营</span></section></section></section></section></section></section></section>