I already have python 2.7 install plus 3.6 install but when I try to install Django it give me the following error -

the directory '/users/sandeepkrishnan/library/caches/pip/http' or parent directory not owned current user , cache has been disabled. please check permissions , owner of directory. if executing pip sudo, may want sudo's -h flag. directory '/users/sandeepkrishnan/library/caches/pip' or parent directory not owned current user , caching wheels has been disabled. check permissions , owner of directory. if executing pip sudo, may want sudo's -h flag. requirement satisfied: django in /library/python/2.7/site-packages 

you're installing django python 2.7 instead of 3.6, have installed in 2.7. install in python 3.6, try pip3 install django , see if works.