运行 npm install 给了我这些错误答案

【问题标题】：running npm install gives me these errors运行 npm install 给了我这些错误
【发布时间】：2021-08-10 12:08:48
【问题描述】：

I have tried a lot of things in order to fix this but can t find a solution, installed node sass that just added more problems, it used to run without a problem now I keep getting errors

npm ERR! code 1
    npm ERR! path D:\sb-app\node_modules\node-sass
    npm ERR! command failed
    npm ERR! command C:\Windows\system32\cmd.exe /d /s /c node scripts/build.js
    npm ERR! Building: C:\Program Files\nodejs\node.exe D:\sb-app\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
    npm ERR! gyp info it worked if it ends with ok
    npm ERR! gyp verb cli [
    npm ERR! gyp verb cli   'C:\\Program Files\\nodejs\\node.exe',
    npm ERR! gyp verb cli   'D:\\sb-app\\node_modules\\node-gyp\\bin\\node-gyp.js',
    npm ERR! gyp verb cli   'rebuild',
    npm ERR! gyp verb cli   '--verbose',
    npm ERR! gyp verb cli   '--libsass_ext=',
    npm ERR! gyp verb cli   '--libsass_cflags=',
    npm ERR! gyp verb cli   '--libsass_ldflags=',
    npm ERR! gyp verb cli   '--libsass_library='
    npm ERR! gyp verb cli ]
    npm ERR! gyp info using node-gyp@3.8.0
    npm ERR! gyp info using node@16.2.0 | win32 | x64
    npm ERR! gyp verb command rebuild []
    npm ERR! gyp verb command clean []
    npm ERR! gyp verb clean removing "build" directory
    npm ERR! gyp verb command configure []
    npm ERR! gyp verb check python checking for Python executable "python2" in the PATH
    npm ERR! gyp verb `which` failed Error: not found: python2
    npm ERR! gyp verb `which` failed     at getNotFoundError (D:\sb-app\node_modules\which\which.js:13:12)
    npm ERR! gyp verb `which` failed     at F (D:\sb-app\node_modules\which\which.js:68:19)
    npm ERR! gyp verb `which` failed     at E (D:\sb-app\node_modules\which\which.js:80:29)
    npm ERR! gyp verb `which` failed     at D:\sb-app\node_modules\which\which.js:89:16
    npm ERR! gyp verb `which` failed     at D:\sb-app\node_modules\isexe\index.js:42:5
    npm ERR! gyp verb `which` failed     at D:\sb-app\node_modules\isexe\windows.js:36:5
    npm ERR! gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:194:21)
    npm ERR! gyp verb `which` failed  python2 Error: not found: python2
    npm ERR! gyp verb `which` failed     at getNotFoundError (D:\sb-app\node_modules\which\which.js:13:12)
    npm ERR! gyp verb `which` failed     at F (D:\sb-app\node_modules\which\which.js:68:19)
    npm ERR! gyp verb `which` failed     at E (D:\sb-app\node_modules\which\which.js:80:29)
    npm ERR! gyp verb `which` failed     at D:\sb-app\node_modules\which\which.js:89:16
    npm ERR! gyp verb `which` failed     at D:\sb-app\node_modules\isexe\index.js:42:5
    npm ERR! gyp verb `which` failed     at D:\sb-app\node_modules\isexe\windows.js:36:5
    npm ERR! gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:194:21) {
    npm ERR! gyp verb `which` failed   code: 'ENOENT'
    npm ERR! gyp verb `which` failed }
    npm ERR! gyp verb check python checking for Python executable "python" in the PATH
    npm ERR! gyp verb `which` succeeded python C:\Python39\python.EXE
    npm ERR! gyp ERR! configure error
    npm ERR! gyp ERR! stack Error: Command failed: C:\Python39\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3];
    npm ERR! gyp ERR! stack   File "<string>", line 1
    npm ERR! gyp ERR! stack     import sys; print "%s.%s.%s" % sys.version_info[:3];
    npm ERR! gyp ERR! stack                       ^
    npm ERR! gyp ERR! stack SyntaxError: invalid syntax
    npm ERR! gyp ERR! stack
    npm ERR! gyp ERR! stack     at ChildProcess.exithandler (node:child_process:326:12)
    npm ERR! gyp ERR! stack     at ChildProcess.emit (node:events:365:28)
    npm ERR! gyp ERR! stack     at maybeClose (node:internal/child_process:1067:16)
    npm ERR! gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:301:5)
    npm ERR! gyp ERR! System Windows_NT 10.0.19042
    npm ERR! gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "D:\\sb-app\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
    npm ERR! gyp ERR! cwd D:\sb-app\node_modules\node-sass
    npm ERR! gyp ERR! node -v v16.2.0
    npm ERR! gyp ERR! node-gyp -v v3.8.0
    npm ERR! gyp ERR! not ok
    npm ERR! Build failed with error code: 1

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Ionutz\AppData\Local\npm-cache\_logs\2021-05-21T08_51_40_333Z-debug.log

我不知道该怎么办我也尝试安装 node-sass 但没有成功

【问题讨论】：

标签： node.js angular npm-install node-sass

【解决方案1】：

npm 错误有时可能非常（可以说是过于）冗长。错误的有趣部分是：

npm ERR! gyp verb check python checking for Python executable "python2" in the PATH

您尝试安装的软件包有一个使用 gyp 在本地编译的本机部分，作为其工具的一部分，npm 需要 python2 来执行构建。
您需要确保已安装 python2，并且可执行文件是路径的一部分。

或者，如果你安装了 python，但它的命名不同，你可以通过调用告诉 npm 使用哪个可执行文件

npm config set python /path/to/your/python

【讨论】：

我这样做了，现在在尝试启动 Angular 项目时遇到了一个新问题 C:\Users\Ionutz\AppData\Roaming\npm/node_modules/node/bin/node: 第 1 行：这个：找不到命令，我使用了 git bash，当我用 powershell 启动它时它工作了

【解决方案2】：

我昨天遇到了类似的问题。我通过确保在默认目录中下载了 python 并安装 Windows Build Tools 来修复它，因为 node-sass 需要 node-gyp，而 node-gyp 反过来需要 Windows Build Tools。

您可以使用管理 shell 下载它，但同样容易转到此page，然后找到并下载“Build Tools for Visual Studio”。 here 也可以找到一个很好的视频来解释这个过程。如前所述，您可以使用 powershell 安装，前提是它以管理员身份运行，这个过程可以在它的 npm 页面here 上找到。

这可能值得删除您的节点模块文件夹并在完成后重新运行 npm install。

【讨论】：

【解决方案3】：

我遇到了类似的问题。尝试删除 package-lock.json 然后重新运行 'npm install'。

【讨论】：