To open the Python IDLE (Shell window) on Windows 10, you can use either of the following methods:
From the Start menu, search for "IDLE" and click on the appropriate version of "IDLE (Python X.X)" that appears in the search results.
Alternatively, you can open the command prompt by pressing the Windows key + R, typing "cmd," and hitting Enter. Then, enter the command "python" or "python3" (if you have multiple versions installed) to open the Python IDLE Shell window.
By following these steps, you'll be able to access the Python IDLE (Shell window) on your Windows 10 system.