Changing Python Versions in Ubuntu 16.04

[metulburr]

you can make an alias.

metulburr@ubuntu:~$ python -V
Python 2.7.12
metulburr@ubuntu:~$ echo "alias python='python3'" >> .bashrc
metulburr@ubuntu:~$ bash
metulburr@ubuntu:~$ python -V
Python 3.7.2

You can change python3 to whatever version you want to invoke. bash to reset the terminal. Or just open a new terminal.

This may or may not change jupyter notebook. If not, then you will have to go into its settings and change python to python3.6 for it to invoke that version. All IDE's have a method to change which python version it invokes.