Fixing strange python sys.path in virtualenv
I had /usr/lib/python2.7/dist-packages in the sys.path of a no-global-site-packages venv
Good ref regarding python sys.path
http://mikeboers.com/blog/2014/05/23/where-does-the-sys-path-start
Find .pth files :
find venv/lib/python2.7/ -name "*.pth"
also look in ~/.local/lib/python2.7
Print sys.path :
python -c "import sys; print 'n'.join(sys.path)"