在Windows上运行Python以获取Node.js依赖项 [英] Running Python on Windows for Node.js dependencies
问题描述
我正在进入Node.js代码库，该代码库要求我通过NPM(即jQuery)下载一些依赖项.
I am getting into a Node.js codebase which requires that I download a few dependencies via NPM, namely jQuery.
在尝试运行npm install jquery时，我不断收到此错误:
In attempting to run npm install jquery, I keep getting this error:
Your environment has been set up for using Node.js 0.8.21 (x64) and NPM
C:\Users\Matt Cashatt>npm install jquery
npm http GET https://registry.npmjs.org/jquery
npm http 304 https://registry.npmjs.org/jquery
npm http GET https://registry.npmjs.org/jsdom
npm http GET https://registry.npmjs.org/xmlhttprequest
npm http GET https://registry.npmjs.org/htmlparser/1.7.6
npm http GET https://registry.npmjs.org/location/0.0.1
npm http GET https://registry.npmjs.org/navigator
npm http GET https://registry.npmjs.org/contextify
npm http 304 https://registry.npmjs.org/htmlparser/1.7.6
npm http 304 https://registry.npmjs.org/xmlhttprequest
npm http 304 https://registry.npmjs.org/location/0.0.1
npm http 304 https://registry.npmjs.org/navigator
npm http 304 https://registry.npmjs.org/jsdom
npm http 304 https://registry.npmjs.org/contextify
npm http GET https://registry.npmjs.org/bindings
npm http GET https://registry.npmjs.org/cssom
npm http GET https://registry.npmjs.org/cssstyle
npm http GET https://registry.npmjs.org/request
npm http 304 https://registry.npmjs.org/bindings
> contextify@0.1.4 install C:\Users\Matt Cashatt\node_modules\jquery\node_module
s\contextify
> node-gyp rebuild
C:\Users\Matt Cashatt\node_modules\jquery\node_modules\contextify>node "C:\Progr
am Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\b
in\node-gyp.js" rebuild
npm http 304 https://registry.npmjs.org/cssstyle
npm http 304 https://registry.npmjs.org/cssom
npm http 304 https://registry.npmjs.org/request
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYT
HON env variable.
gyp ERR! stack at failNoPython (C:\Program Files\nodejs\node_modules\npm\nod
e_modules\node-gyp\lib\configure.js:113:14)
gyp ERR! stack at C:\Program Files\nodejs\node_modules\npm\node_modules\node
-gyp\lib\configure.js:82:11
gyp ERR! stack at Object.oncomplete (fs.js:297:15)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "node" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modu
les\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\Matt Cashatt\node_modules\jquery\node_modules\contextify
gyp ERR! node -v v0.8.21
gyp ERR! node-gyp -v v0.8.4
gyp ERR! not ok
npm ERR! error rolling back Error: ENOTEMPTY, rmdir 'C:\Users\Matt Cashatt\node_
modules\jquery\node_modules\jsdom\node_modules\request\tests'
npm ERR! error rolling back jquery@1.8.3 { [Error: ENOTEMPTY, rmdir 'C:\Users\M
att Cashatt\node_modules\jquery\node_modules\jsdom\node_modules\request\tests']
npm ERR! error rolling back errno: 53,
npm ERR! error rolling back code: 'ENOTEMPTY',
npm ERR! error rolling back path: 'C:\\Users\\Matt Cashatt\\node_modules\\jque
ry\\node_modules\\jsdom\\node_modules\\request\\tests' }
npm ERR! contextify@0.1.4 install: `node-gyp rebuild`
npm ERR! `cmd "/c" "node-gyp rebuild"` failed with 1
npm ERR!
npm ERR! Failed at the contextify@0.1.4 install script.
npm ERR! This is most likely a problem with the contextify package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-gyp rebuild
npm ERR! You can get their info via:
npm ERR! npm owner ls contextify
npm ERR! There is likely additional logging output above.
npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nod
ejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "jquery"
npm ERR! cwd C:\Users\Matt Cashatt
npm ERR! node -v v0.8.21
npm ERR! npm -v 1.2.11
npm ERR! code ELIFECYCLE
npm ERR! Error: ENOENT, lstat 'C:\Users\Matt Cashatt\node_modules\jquery\node_mo
dules\jsdom\node_modules\request\tests\test-pipes.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://github.com/isaacs/npm/issues>
npm ERR! or email it to:
npm ERR! <npm-@googlegroups.com>
npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nod
ejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "jquery"
npm ERR! cwd C:\Users\Matt Cashatt
npm ERR! node -v v0.8.21
npm ERR! npm -v 1.2.11
npm ERR! path C:\Users\Matt Cashatt\node_modules\jquery\node_modules\jsdom\node_
modules\request\tests\test-pipes.js
npm ERR! fstream_path C:\Users\Matt Cashatt\node_modules\jquery\node_modules\jsd
om\node_modules\request\tests\test-pipes.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack C:\Program Files\nodejs\node_modules\npm\node_modules\fst
ream\lib\writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:297:15)
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! C:\Users\Matt Cashatt\npm-debug.log
npm ERR! not ok code 0
C:\Users\Matt Cashatt>
失败似乎是由于缺少Python安装导致的.好了，我已经安装了Python，设置了变量，然后重新启动，仍然是错误.
It looks like the failure is due to a missing Python installation. Well, I have installed Python, set the variable, and rebooted and still the error.
关于我所缺少的任何线索吗?
Any clue as to what I am missing?
推荐答案
您的问题是您没有设置环境变量.
Your problem is that you didn't set the environment variable.
该错误清楚地表明了这一点:
The error clearly says this:
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
在您的评论中，您说您这样做:
And in your comment, you say you did this:
set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib
很好，但是没有设置PYTHON变量，而是设置了PYTHONPATH变量.
That's nice, but that doesn't set the PYTHON variable, it sets the PYTHONPATH variable.
同时，仅使用set命令仅会影响当前的cmd会话.如果您重启之后，按照您所说的那样进行操作，最终将出现一个全新的cmd会话，其中未设置该变量.
Meanwhile, just using the set command only affects the current cmd session. If you reboot after that, as you say you did, you end up with a whole new cmd session that doesn't have that variable set in it.
有几种方法可以永久设置环境变量-最简单的方法是在XP的系统控制面板中，当然在Vista中有所不同，在7中又有所不同，在8中又有所不同，但是您可以在Google上进行搜索
There are a few ways to set environment variables permanently—the easiest is in the System Control Panel in XP, which is of course different in Vista, different again in 7, and different again in 8, but you can google for it.
或者，只需在npm命令之前执行set，而无需在这之间重新启动.
Alternatively, just do the set right before the npm command, without rebooting in between.
您可以通过执行与配置脚本完全相同的操作来测试您是否已正确完成操作:在运行npm之前，请尝试运行%PYTHON%.如果做对了，您将获得一个Python解释器(您可以立即退出).如果遇到错误，则说明您做得不对.
You can test whether you've done things right by doing the exact same thing the config script is trying to do: Before running npm, try running %PYTHON%. If you've done it right, you'll get a Python interpreter (which you can immediately quit). If you get an error, you haven't done it right.
这有两个问题:
set PYTHON=%PYTHON%;D:\Python
首先，将PYTHON设置为;D:\Python.对于以分号分隔的路径列表(例如PATH或PYTHONPATH)，该多余的分号是很好的选择，但对于PYTHON这样的单个值则不是这样.同样，当您要向路径列表中添加另一个路径而不是为单个值添加新值时，则需要在现有值上添加一个新值.因此，您只需要set PYTHON=D:\Python.
First, you're setting PYTHON to ;D:\Python. That extra semicolon is fine for a semicolon-separated list of paths, like PATH or PYTHONPATH, but not for a single value like PYTHON. And likewise, adding a new value to the existing value is what you want when you want to add another path to a list of paths, but not for a single value. So, you just want set PYTHON=D:\Python.
第二，D:\Python不是您的Python解释器的路径.类似于D:\Python\Python.exe或D:\Python\bin\Python.exe.找到正确的路径，确保它可以独立运行(例如，键入D:\Python\bin\Python.exe并确保您拥有Python解释器)，然后设置变量并使用它.
Second, D:\Python is not the path to your Python interpreter. It's something like D:\Python\Python.exe, or D:\Python\bin\Python.exe. Find the right path, make sure it works on its own (e.g., type D:\Python\bin\Python.exe and make sure you get a Python interpreter), then set the variable and use it.
所以:
set PYTHON=D:\Python\bin\Python.exe
或者，如果要使其永久存在，请在控制面板"中执行相同的操作.
Or, if you want to make it permanent, do the equivalent in the Control Panel.
这篇关于在Windows上运行Python以获取Node.js依赖项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
