regarding installation of python version

[Thri sowmya.G]

   The problem is how many times I have uninstalled the python version but
   always it is showing the  same version  after the installation  of new
   version too  .But in all control panel and file explorer at everywhere the
   system showing that the old  version got uninstalled  but again in command
   prompt or terminal it is in  same old version. I hope I will get a
   solution from you.

                      
                                                                                          

                                                      Thank you.