find python site-packages
[sudo] pip install site-packages
[sudo] sudo npm install -g site-packages
# site-packages --help
/Library/Python/2.6/site-packages
/Library/Python/2.7/site-packages
/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages
$ site-packages
/Library/Python/2.6/site-packages
/Library/Python/2.7/site-packages
/usr/local/lib/python3.5/site-packages