Install Python on Ubuntu 18.04 LTS
How to install Python (Python2 or Python3) on Ubuntu 18.04 LTS release.
1) How to install Python and get started (using apt)
2) Differences between Python 2 and Python 3 (print, integer division, unicode, etc)
3) Install and use PIP modules to get more functionality
Also check out a written article explaining how to install python3:
Install Python3 and IDLE on Ubuntu 18.04
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