For later default placement when install is in folder far away👀
If install still not work into Regedit.
I never use the default path,so i have python 3.8 and 3.9 on a easy path.
C:\Users\(your name)\AppData\Local\Programs\Python\Python39You can delete folder here,restart Pc.
If install still not work into Regedit.
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\UninstallJust scroll down to find Python 3.9 on right side and delete key.
I never use the default path,so i have python 3.8 and 3.9 on a easy path.
C:\python38 C:\Python39Can choose path when install as mention in my tutorial here.