The py launcher is optionally installed during the setup process when you first install Python on Windows. At one point, you’ll be prompted to do so, as per the screenshots shown below.

There are a number of resources to help with training, and Wing IDE 101 is available for download for Windows ... the ability to customize and run a Python script externally.

to make it more useful for PY script files. These are some good tools that you can use to open Python PY files in Windows 10 PC. Though Python IDE programs are better to use, simple text and code ...