How do I install multiple versions of Python on Windows 10?

Open the Executable File:

1. Double-click the Python file.
2. Check the “Add Python ** to PATH” box.
3. Click “Install Now”
4. Repeat.

How do I run two versions of Python on Windows?

TL;DR

1. Open Command Prompt and enter pip install virtualenv.
2. Download the desired python version (do NOT add to PATH!), and remember the pathtonew_python.exe of the newly installed version.
3. To create a virtualenv, open Command Prompt and enter.