pyenv

Pyenv is Python's version manager

$pip install pyenv-win --target $HOME\\.pyenv

Or

git clone https://github.com/pyenv-win/pyenv-win.git $HOME/.pyenv

Add this 2 lines into PATH env vars:

c:\users\USERNAME\.pyenv\pyenv-win\bin
c:\users\USERNAME\.pyenv\pyenv-win\shims

$pyenv install --list

#Install Python
$ pyenv install 3.8.2

#set global version
$ pyenv global 3.8.2

#set local version

$ pyenv local 2.7.1

#rehash to update shims

$ pyenv rehash

Refrence links:

https://github.com/pyenv-win/pyenv-win#installation

http://evaholmes.com/how-to-set-up-pyenv-and-poetry-on-windows-10-for-python-project-management/