Python比的Java / C＃慢？ [英] Is Python slower than Java/C#?

问题描述

Python比的Java / C＃慢？

Is Python slower than Java/C#?

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下面是优化CPython的一个项目：空载吞咽

Here is a project that optimizes CPython: unladen-swallow

推荐答案

不要混为一谈语言和运行时间。

Don't conflate Language and Run-Time.

的Python（语言）有许多运行时实现。

Python (the language) has many run-time implementations.

• CPython的是PTED通常跨$ P $，并且会比native- code C＃慢。它可能是比Java慢，这取决于Java JIT编译器

• CPython is usually interpreted, and will be slower than native-code C#. It might be slower than Java, depending on the Java JIT compiler.

Jython是在JVM PTED间$ P $，并且具有相同的性能配置和Java。

JYthon is interpreted in the JVM and has the same performance profile as Java.

IronPython的是依赖于相同的.NET库和IL为C＃，所以性能差异会比较小。

IronPython is relies on the same .NET libraries and IL as C#, so the performance difference will be relatively small.

Python可以通过耐热玻璃，PyToC，和其他被转换为本地code。在这种情况下，它通常会执行以及C ++。你可以 - 在一定程度上 - 进一步优化C ++也许排挤不是从高硼硅未优化的输出一点点更好的性能。

Python can be translated to native code via PyREX, PyToC, and others. In this case, it will generally perform as well as C++. You can -- to an extent -- further optimize C++ and perhaps squeeze out a little bit better performance than unoptimized output from PyREX.

有关详细信息，请参阅http://arcriley.blogspot.com/2009/03/so-long-pyrex.html

请注意了Python（语言）是不慢。一些Python运行时间（CPython的，例如）会比native- code C ++慢。

Note that Python (the language) is not slow. Some Python run-times (CPython, for example) will be slower than native-code C++.

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