I'm trying to run the following command: npm install -g bower gulp cordova ionic tsd@next karma-cli protractor node-gyp coffee-script js-beautify typescript npm-check
I have installed Python, Visual Studio Express and node-gyp so thought I'd be good to go, however I get the following errors:
Regarding the "Can't find Python executable "python", you can set the PYTHON env variable." error, I'm a little confused because I have set the PYTHON environmental variable like so:
Any ideas please?
You got to add python to your PATH variable. One thing you can do is Edit your Path variable now and add
;%PYTHON%;
Your variable PYTHON should point to the root directory of your python installation.
C:\Program Files\Python_2.7.10;%PYTHON%; but I'm still getting the same error unfortunately –
Jackhammer C:\Program Files\Python_2.7.10 and then edit your PATH Variable and add ;%PYTHON; . I've looked it up locally and i added C:\Python34;C:\Python34\Scripts; to get things working. Although as you see im not using Python 2. –
Alleviator PY_HOME, or PYTHON. It's just important that it matches with what you insert in your path variable. –
Alleviator Try:
Install all the required tools and configurations using Microsoft's windows-build-tools by running npm install -g windows-build-tools from an elevated PowerShell (run as Administrator).
https://github.com/nodejs/node-gyp#on-windows
try
npm config set python D:\Library\Python\Python27\python.exe
python is not a valid npm option –
Vervet I installed python2.7 to solve this issue.
You got to add python to your PATH variable. One thing you can do is Edit your Path variable now and add
;%PYTHON%;
Your variable PYTHON should point to the root directory of your python installation.
C:\Program Files\Python_2.7.10;%PYTHON%; but I'm still getting the same error unfortunately –
Jackhammer C:\Program Files\Python_2.7.10 and then edit your PATH Variable and add ;%PYTHON; . I've looked it up locally and i added C:\Python34;C:\Python34\Scripts; to get things working. Although as you see im not using Python 2. –
Alleviator PY_HOME, or PYTHON. It's just important that it matches with what you insert in your path variable. –
Alleviator Just run below command with admin access
npm install --global --production windows-build-tools
windows-build0tools is deprecated: npmjs.com/package/windows-build-tools –
Runlet The easiest way is to let NPM do everything for you,
npm --add-python-to-path='true' --debug install --global windows-build-tools
MAC: In my case, I just run the below command and the error resolved:
npm config set python python3
npm ERR! python` is not a valid npm option` –
Buxton I have recently encountered this issue in a dockerfile using node:16-alpine as base image. I have added following run command to fix the issue:
FROM node:alpine as build-stage
RUN apk add --no-cache python3 py3-pip make g++
Here, both tags node:alpine & node:16-alpine are same.
RUN apk add --no-cache python3 py3-pip make g++ to docker file solved my issue, thnx! –
Methodology My Problem was the usage of Node v16.
I went back to Node v12 (v14 is probably fine as well) and it worked.
One of the following solutions will work for you:
c:\Python\27\python.exe or set PYTHON=D:\Python\bin\Python.exenpm config set python D:\Library\Python\Python27\python.exenpm --add-python-to-path='true' --debug install --global windows-build-tools (Must be executed via "Run As Administrator" PowerShell)If not... Try to install the required package on your own (I did so, and it was node-sass, after installing it manually, the whole npm install was successfully completed
You are running the Command Prompt as an admin. You have only defined PYTHON for your user. You need to define it in the bottom "System variables" section.
Also, you should only point the variable to the folder, not directly to the executable.
C:\Program Files\Python_2.7.10;%PYTHON%; in as the PYTHON variable under System variables and unfortunately am still getting the same error :( –
Jackhammer %PYTHON% should go in the PATH variable, not PYTHON. By adding it in PYTHON, you are making a circular reference, which is not good for your computer. –
Clingstone Had this issue on node:18 alpine docker image on Apple Silicon where only python3 is available but at least some versions of node-gyp don't support pyhton3 yet. So I had to use an alpine version that still had python2:
FROM node:18.8.0-alpine3.15
WORKDIR /app
RUN apk --no-cache add python2 make g++
COPY package.json .
COPY yarn.lock .
RUN yarn
COPY . .
Run : npm --vs2015 install --global windows-build-tools
delete node_modules
delete packagelock.json and yarn.lock(if have)
npm cache clean --force
npm install
npm config set python D:\Library\Python\Python27\python.exe
This kind off worked for me from Tom Gao's answer
Make sure to change in npmrc file as it doesnt automatically takes \ for the path and do add Python in env var also as mentioned in the answers.
use node version which mentioned in package.json.
using nvm (node version manager) you can switch between respective node version mentions in package.json
as mentionned by jvecsei
For me adding D:\Softwares\Python\2.7\Scripts instead of D:\Softwares\Python\2.7 to PATH worked.
On macOS installing Python 2 solves this:
With asdf, in a .tool-versions file:
python 2.7.18
Then
asdf plugin add python
asdf install
For ubuntu:
sudo apt-get update
sudo apt install python2
Check python 2 version:
python2 --version
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C:\Program Files\Python_2.7.10\python.exe– JackhammerC:\Program Files\Python_2.7.10or add to your PATH https://mcmap.net/q/79960/-how-to-add-to-the-pythonpath-in-windows-so-it-finds-my-modules-packages-duplicate under system variables – PsycholinguisticsC:\Program Files\Python_2.7.10– Jackhammer