pip install Django on python3.6
As is common with these sort of pip issues, before you install, check where pip is pointing to with pip -V. 
If that points to Python 2, you can then try pip3 -V; if that points to an older version of Python 3, go for pip3.6.
As a final approach, you can always go through python itself with python3.6 -m pip install ...
If I run pip install Django I get

Requirement already satisfied: Django in
  /usr/local/lib/python2.7/dist-packages

I'd like to use python3.6 instead (which is already installed in /usr/bin/python3.6). What's the correct pip syntax to install the last version of Django on python 3.6?