update python library code example

Example 1: how to update a module in python

pip install [package] --upgrade

Example 2: how to update python

The explanation would be too long for a grepper answer.
So here is a link to a stackoverflow question:

https://stackoverflow.com/questions/45137395/how-do-i-upgrade-the-python-installation-in-windows-10

Example 3: pip install python 3

You cannot just pip install python3 because it is not a library.

If you want to install the latest python3:
https://www.python.org/ftp/python/3.8.2/python-3.8.2.exe