56.ERR! configure error gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

Node.js 在安装模块的时候报错，缺少python环境。

ERR! configure error gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

错误信息如下：

D:\node_modules\selenium-webdriver\node_modules\ws\node_modules\utf-8-validate>node "D:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild

ERR! configure error

gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

gyp ERR! stack     at failNoPython (D:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:103:14)

gyp ERR! stack at D:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:64:11

gyp ERR! stack at Object.oncomplete (fs.js:107:15)

gyp ERR! System Windows_NT 6.2.9200

gyp ERR! command "node" "D:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"

gyp ERR! cwd D:\node_modules\selenium-webdriver\node_modules\ws\node_modules\utf-8-validate

gyp ERR! node -v v0.10.29

gyp ERR! node-gyp -v v0.13.1

gyp ERR! not ok

原因看node-gyp的安装需求，https://github.com/nodejs/node-gyp，部分剪切如下，可以请求的看到需要安装python2.7（其实2.6也行）python3不行

You can install with npm:
$ npm install -g node-gyp
You will also need to install:

On Unix:

python (v2.7 recommended, v3.x.x is not supported)

make

A proper C/C++ compiler toolchain, like GCC

On Mac OS X:

You also need to install the Command Line Tools via Xcode. You can find this under the menu Xcode -> Preferences -> Downloads

This step will install gcc and the related toolchain containing make

python (v2.7 recommended, v3.x.x is not supported) (already installed on Mac OS X)

Xcode

On Windows:

For 64-bit builds of node and native modules you will also need the Windows 7 64-bit SDK

You may need to run one of the following commands if your build complains about WindowsSDKDir not being set, and you are sure you have already installed the SDK:

Microsoft Visual Studio C++ 2013 for Windows Desktop (Express version works well)

Microsoft Visual Studio C++ 2013 (Express version works well)

If the install fails, try uninstalling any C++ 2010 x64&x86 Redistributable that you have installed first

If you get errors that the 64-bit compilers are not installed you may also need thecompiler update for the Windows SDK 7.1

Make sure that you have a PYTHON environment variable, and it is set to drive:\path\to\python.exe not to a folder

Python (v2.7.3 recommended, v3.x.x is not supported)

Windows XP/Vista/7:

Windows 7/8:

All Windows Versions
call "C:\Program Files\Microsoft SDKs\Windows\v7.1\bin\Setenv.cmd" /Release /x86

call "C:\Program Files\Microsoft SDKs\Windows\v7.1\bin\Setenv.cmd" /Release /x64
If you have multiple Python versions installed, you can identify which Python version node-gyp uses by setting the '--python' variable:
$ node-gyp --python /path/to/python2.7
If node-gyp is called by way of npm and you have multiple versions of Python installed, then you can set npm's 'python' config key to the appropriate value:
$ npm config set python /path/to/executable/python2.7
Note that OS X is just a flavour of Unix and so needs python, make, and C/C++. An easy way to obtain these is to install XCode from Apple, and then use it to install the command line tools (under Preferences -> Downloads).

所以下载安装Python2.7就行了，记得配环境变量。

巴特西

56.ERR! configure error gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

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