Python difference between dist-packages and site-packages

#apt-get install request
#/usr/lib/python2.7/dist-packages

#easy_install and pip
#/usr/local/lib/python2.7/dist-packages

#form source code, setup.py install
#/usr/local/lib/python2.7/site-packages/

#pip install --user
#/home/puser/.local/lib/python2.7/site-packages/