如何安装cython？ [英] How can I install cython

问题描述

在Windows上安装Kivy的过程中，我发现我需要Cython。

• 我尝试使用 easy_install cython ，但是这会给出以下错误：错误：无法找到vcvarsall.bat


• 我从Cython的官方页面下载了该软件包，但是当尝试运行 python setup.py install 时，我看到相同的错误。






如何安装Cython？没有这个'vcvarsall.bat'错误。





我正在运行Windows 32位。








解决方案

Cython是一个 binary 包。这意味着它不是完​​全用Python编写的。它的一部分是用于编译为本地二进制文件的语言，例如C或C ++。 vcvarsall.bat 是一个Microsoft脚本，用于调用C或C ++代码的编译器。换句话说，您的系统上没有安装编译器（或至少Python找不到）。





您的选项包括：






• 安装C / C ++编译器，确保Python可以找到并使用它


• 查找预先构建的二进制这个图书馆






后者将更简单。你可以在这里找到二进制文件： http://www.lfd.uci.edu/~gohlke/pythonlibs/ #cython 。下载对应于你的bitness和Python版本的二进制文件。例如，如果您使用的是Python 3.4，而您的系统是32位，则可以下载 Cython-0.21.1.win32-py3.4.exe 。 将其保存到您知道路径的位置。（一个简单的选择是将其保存到 C：\ 目录。）然后运行 easy_install 在下载的文件中，类似于：

  easy_install C： \Cython-0.21.1.win32-py3.4.exe 
  

（确保更改该命令中的路径匹配实际的文件路径。）




In the process of installing Kivy on Windows, I found that I needed Cython.

• I tried installing it using easy_install cython, but this gave the following error: error: Unable to find vcvarsall.bat
• I downloaded the package from Cython's official page, but when trying to run python setup.py install, I saw the same errors.

How can I install Cython? Without this 'vcvarsall.bat' error.

I am running Windows 32 bit.

解决方案

Cython is a binary package. This means it is not written entirely in Python. Part of it is in a language that compiles to native binaries, such as C or C++. vcvarsall.bat is a Microsoft script for calling a compiler for C or C++ code. In other words, you don't have a compiler installed on your system (or at least, Python can't find it).

Your options include:

• Install a C/C++ compiler and make sure Python can find and use it
• Find a prebuilt binary of this library

The latter will be simpler. You can find the binary here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#cython. Download the binary that corresponds to your bitness and Python version. For example, if you're using Python 3.4 and your system is 32-bit, you would download Cython‑0.21.1.win32‑py3.4.exe. Save this to a location where you know the path. (One simple choice is just saving it to the C:\ directory.) Then run easy_install on the downloaded file, similar to this:

easy_install C:\Cython‑0.21.1.win32‑py3.4.exe

(Make sure you change the paths in that command to match the actual file paths.)

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