Python executable "python" is v3.4.3, which is not supported by gyp

[abougouffa]

I get this error

> node-gyp rebuild

gyp ERR! configure error 
gyp ERR! stack Error: Python executable "python" is v3.4.3, 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 (/home/hacko/npm/lib/node_modules/wintersmith/node_modules/npm/node_modules/node-gyp/lib/configure.js:108:14)
gyp ERR! stack     at /home/hacko/npm/lib/node_modules/wintersmith/node_modules/npm/node_modules/node-gyp/lib/configure.js:97:9
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:194:7)
gyp ERR! stack     at emitTwo (events.js:87:13)
gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
gyp ERR! stack     at maybeClose (internal/child_process.js:817:16)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)
gyp ERR! System Linux 4.1.8-1-ck
gyp ERR! command "/usr/bin/node" "/home/hacko/npm/lib/node_modules/wintersmith/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/hacko/Projects/git/abougouffa/node_modules/wintersmith-livereload/node_modules/ws/node_modules/bufferutil
gyp ERR! node -v v4.1.1
gyp ERR! node-gyp -v v1.0.3
gyp ERR! not ok 
  warn npm: optional dep failed, continuing utf-8-validate@1.1.0
  warn npm: optional dep failed, continuing bufferutil@1.1.0
  warn npm: optional dep failed, continuing fsevents@0.2.1
  warn npm: optional dep failed, continuing fsevents@1.0.0

Because in my distro (Arch Linux) and many others, python3 is the default python interpreter (the "python" executable is a link for "python3").

You can use "python2" instead of "python" in the shebang line, this is a standard since 2011 PEP-394

[TooTallNate]

This was fixed in #527, but it looks like you're using an ancient version of node-gyp for some reason (v1.0.3, current version that bundles with node v4.1.1 is node-gyp v3.0.3). Try updating to the latest node-gyp / npm and things should work for you again.

(Also see #384, #502).

[xing-kenny]

node-gyp -v v3.0.3 not ok

C:\Users\kenny>D:\\run\\nodejs\\node.exe D:\\run\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js rebuild
gyp info it worked if it ends with ok
gyp info using node-gyp@3.0.3
gyp info using node@4.2.2 | win32 | ia32
gyp ERR! configure error
gyp ERR! stack Error: Python executable "python" is v3.4.3, 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 (D:\run\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:121:14)
gyp ERR! stack     at D:\run\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:110:9
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:194:7)
gyp ERR! stack     at emitTwo (events.js:87:13)
gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
gyp ERR! stack     at maybeClose (internal/child_process.js:818:16)
gyp ERR! stack     at Socket.<anonymous> (internal/child_process.js:319:11)
gyp ERR! stack     at emitOne (events.js:77:13)
gyp ERR! stack     at Socket.emit (events.js:169:7)
gyp ERR! stack     at Pipe._onclose (net.js:469:12)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "D:\\run\\nodejs\\node.exe" "D:\\run\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\kenny
gyp ERR! node -v v4.2.2
gyp ERR! node-gyp -v v3.0.3
gyp ERR! not ok

[lordgreg]

Same here.

gyp ERR! configure error
gyp ERR! stack Error: Python executable "C:\Users\Gregor\AppData\Local\Programs\Python\Python35\python.exe" is v3.5.1, 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 (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:121:14)
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:110:9
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:204:7)
gyp ERR! stack     at emitTwo (events.js:87:13)
gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
gyp ERR! stack     at maybeClose (internal/child_process.js:818:16)
gyp ERR! stack     at Socket.<anonymous> (internal/child_process.js:319:11)
gyp ERR! stack     at emitOne (events.js:77:13)
gyp ERR! stack     at Socket.emit (events.js:169:7)
gyp ERR! stack     at Pipe._onclose (net.js:469:12)
gyp ERR! System Windows_NT 10.0.10586
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Development\ionic2-starter\node_modules\bufferutil
gyp ERR! node -v v5.1.1
gyp ERR! node-gyp -v v3.0.3
gyp ERR! not ok
npm WARN install:bufferutil@1.2.1 bufferutil@1.2.1 install: `node-gyp rebuild`
npm WARN install:bufferutil@1.2.1 Exit status 1

[TooTallNate]

@xing-kenny @lordgreg Please make sure you're passing the --python argument to a Python 2 executable

[lordgreg]

@TooTallNate thank you for your swift reply. I managed to fix the above error with removing Python 3.* and installing Python 2.* and giving its executable into $PYTHON env. variable. Of course I've thought I'd finally get everything working but no... now I need VS compiler 👎

MSBUILD : error MSB3428: Could not load the Visual C++ component "VCBuild.exe". To fix this, 1) install the .NET Framework 2.0 SDK, 2) install Microsoft Visual Studio 2005 or 3) add the location of the component to the system path if it is installed elsewhere.  [C:\Develop ment\ionic2-starter\node_modules\bufferutil\build\binding.sln]
gyp ERR! build error
gyp ERR! stack Error: `C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\build.js:270:23)
gyp ERR! stack     at emitTwo (events.js:87:13)
gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)
gyp ERR! System Windows_NT 10.0.10586
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Development\ionic2-starter\node_modules\bufferutil
gyp ERR! node -v v5.1.1
gyp ERR! node-gyp -v v3.0.3
gyp ERR! not ok
npm WARN install:bufferutil@1.2.1 bufferutil@1.2.1 install: `node-gyp rebuild`
npm WARN install:bufferutil@1.2.1 Exit status 1

I'll try to install VS Community Edition. But that's just great... just to make gyp to work, I have to install python and visual studio. Crazy! 🎱

[sukrosono]

@TooTallNate hi i still hit this issue as well

• node v4.2.4
• node-gyp v3.2.1
• npm v3.7.2
• python v3.5.1

i am not sure on my pc is valid issue, because i have install update node and npm

which is clear in my machine is

Error stack -> cant find python executable
Err command "my new node path" "old node path\\path to node-gyp.js" "rebuild"

sorry but i already try stackoverflow solution for this, and 3 of them fail.

[bnoordhuis]

@brutalcrozt Install python 2.7. If node-gyp doesn't find it automatically, tell it where to look with --python /path/to/python2.7.

[sukrosono]

@bnoordhuis thanks man, already did but lead to #307
i really going to far, since i just want install protractor. i verify that the file VCBuild.exe is not present.

any suggestion to find fastest way to satisfy this?
i won't and i can't install this one

File Name:                                          File Size:
vs2013.4_dskexp_ENU.iso                               6.5 GB
wdexpress_full.exe                                    1.1 MB

[bnoordhuis]

You're going to need a compiler. You could give the instructions from #867 a try if VS is too big but one way or another, you're going to need some hard drive space.

[sukrosono]

i need time to add 7GB on my disk, so basically as long i need node-gyp i have to keep Microsoft Visual C++ build Tools with their 7GB hard drive space?

[bnoordhuis]

You can try a customized install. I think you only need the C++ compiler and the SDK. Preempting a "how much space will that take?" question: I don't know. :-)

Got this resolved by :

• Installing 2.7 on my machine
  https://www.python.org/download/releases/2.7/
• Setting the PYTHON path
  SET PYTHON=c:\path\to\python27\executable\python.exe
• checking if PYTHON was correctly added by executing:
  %PYTHON%
  And ensuring it gets the python command prompt
• Installing Visual Studio Community 2013 (sorry @brutalcrozt, - didn't track how much space it takes; took close to an hour for the install to run)
• Running npm config set msvs_version 2013 --global
• Finally, running

> node-gyp rebuild
Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
  contextify.cc
  win_delay_load_hook.c
     Creating library C:\node\node_modules\contextify\build\Release\contextify.lib and ob
  ject C:\node\node_modules\contextify\build\Release\contextify.exp
  Generating code
  Finished generating code
  contextify.vcxproj -> C:\node\node_modules\contextify\build\Release\\contextify.node
birst-wdc@0.0.0-a C:\
+-- graceful-fs@4.1.4  extraneous
+-- jsdom@3.1.2
| `-- contextify@0.1.15
|   +-- bindings@1.2.1
|   `-- nan@2.3.3
+-- node.js@0.0.0  extraneous
+-- pug@2.0.0-alpha8  extraneous
`-- python@0.0.4  extraneous

Hope this helps!

[chaffeqa]

Resolved (npm 3.9.5, node 6.2.2, python 3.4.4) by running:

npm install -g node-gyp