The python from Windows Store is not good, it redirects some path writes and will make the debugging experience of tools using python dreadful. Always install from the win32 installer from the website.
That's not the point. The point is that even after you install Python on Windows using the official installer, and unless you put that early in the %PATH%, running 'python' on a powershell / Windows terminal will pop up the Windows Store. That's just how fucking stupid Windows is these days.
If you install Python using the official installer from python.org and check the "Add interpreter to PATH" box when installing, running `python` in shell will launch it.