You can download the standard Python package, among others, from the Microsoft Store or directly from the Python project home page.

You must specify which Python version you would like to use with GS-Base, by selecting a given version in the Settings > Options > General dialog box.

Unless you already have Windows system variables pointing to the Python installation folder, in the Settings > Options > General dialog box you must also specify the folder where the Python core library DLL file (for example, python39.dll for version 3.9) is located.