using pip to install code example
Example 1: how to install python libraries
python -m pip install SomePackage
Example 2: 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
Example 3: install packages with pip from python
pip3 install <package_name>