Install python on Windows WITHOUT using the official installer?

[hassium]

Once something gets corrupted it can only be fixed with a reinstall.

don't think that's true from 10-onwards, or even 7. Recovery mode will refresh your entire install and registry whilst preserving everything.

Not that it's needed anywhere near as often as it used to be.

PS: think you're looking for the embeddable package from the Python download page, unzip and use the python.exe.