[Python] Change Python3 as the default version on Ubuntu
Python default version on Ubuntu 18.04 LTS
The default version of Python on Ubuntu 18.04 is Python 2, that is, if you run“python”command in the Terminal, the Python 2 engine will be executed. Even if you have installed Python 3.5 or higher version.
A solution to change Python3 as the default version
sudo update-alternatives --install /usr/bin/python python /usr/bin python3 1
