Answers for "gyp ERR! stack Error: Can't find Python executable "python","

npm ERR! gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

npm --add-python-to-path='true' --debug install --global windows-build-tools

error: can't find python executable "python", you can set the python env variable.

apt-get update     
apt-get install python2.7    
ln -s /usr/bin/python2.7 /usr/bin/python