问题：在NPM安装期间如何使用其他版本的python？
我可以通过终端访问运行centos 5.9的VPS，并安装了默认的python 2.4.3。我还通过以下命令安装了python 2.7.3 ：（我使用make altinstall代替make install）
wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
tar -xf Python-2.7.3.tgz
cd Python-2.7.3
./configure
make
make altinstall
然后我通过以下命令从源代码安装了node.js：
python2.7 ./configure
make
make install
问题是，当我使用npm install并尝试安装需要python> 2.4.3的node.js软件包时，出现此错误：
gyp ERR! configure error
gyp ERR! stack Error: Python executable "python" is v2.4.3, which is not supported by gyp.
gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
gyp ERR! stack at failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:125:14)
gyp ERR! stack at /usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:114:9
我应该如何“通过–python开关以指向Python> = v2.5.0”？
I have terminal access to a VPS running centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install)
wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
tar -xf Python-2.7.3.tgz
cd Python-2.7.3
./configure
make
make altinstall
then I installed node.js from source via these commands:
python2.7 ./configure
make
make install
The problem is, when I use npm install and try to install a node.js package which requires python > 2.4.3 I get this error:
gyp ERR! configure error
gyp ERR! stack Error: Python executable "python" is v2.4.3, which is not supported by gyp.
gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
gyp ERR! stack at failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:125:14)
gyp ERR! stack at /usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:114:9
how should I “pass the –python switch to point to Python >= v2.5.0”?
回答 0
您可以使用--pythonnpm选项，如下所示：
npm install --python=python2.7
或将其设置为始终使用：
npm config set python python2.7
Npm会在需要时依次将此选项传递给node-gyp。
（注意：我是在Github上发布一个问题将此文档包含在文档中的人，因为对此有太多问题；-)）
You can use --python option to npm like so:
npm install --python=python2.7
or set it to be used always:
npm config set python python2.7
Npm will in turn pass this option to node-gyp when needed.
(note: I’m the one who opened an issue on Github to have this included in the docs, as there were so many questions about it ;-) )
回答 1
在运行npm install之前将python设置为python2.7
Linux：
export PYTHON=python2.7
视窗：
set PYTHON=python2.7
set python to python2.7 before running npm install
Linux:
export PYTHON=python2.7
Windows:
set PYTHON=python2.7
回答 2
对于Windows用户，类似这样的方法应该起作用：
PS C:\angular> npm install --python=C:\Python27\python.exe
For Windows users something like this should work:
PS C:\angular> npm install --python=C:\Python27\python.exe
回答 3
好的，所以您已经找到了解决方案。只想分享对我有用很多次的东西；
我创建了setpy2别名，可以帮助我切换python。
alias setpy2="mkdir -p /tmp/bin; ln -s `which python2.7` /tmp/bin/python; export PATH=/tmp/bin:$PATH"
执行setpy2之前运行npm install。该开关将一直有效，直到您退出终端为止，之后python将其设置回系统默认值。
您也可以将这种技术用于任何其他命令/工具。
Ok, so you’ve found a solution already. Just wanted to share what has been useful to me so many times;
I have created setpy2 alias which helps me switch python.
alias setpy2="mkdir -p /tmp/bin; ln -s `which python2.7` /tmp/bin/python; export PATH=/tmp/bin:$PATH"
Execute setpy2 before you run npm install. The switch stays in effect until you quit the terminal, afterwards python is set back to system default.
You can make use of this technique for any other command/tool as well.
回答 4
为了快速使用它，npm install –python =“ c：\ python27”
for quick one time use this works,
npm install –python=”c:\python27″
回答 5
如果您在路径上没有python或想指定目录，则此方法效果更好：
//for Windows
npm config set python C:\Python27\python.exe
//for Linux
npm config set python /usr/bin/python27
This one works better if you don’t have the python on path or want to specify the directory :
//for Windows
npm config set python C:\Python27\python.exe
//for Linux
npm config set python /usr/bin/python27
