Uninstalling spyder

You have copies of this program not installed by your package manager.

Have you installed packages from source or with other package managers such as pip? If you used something like pip, try uninstalling using pip. EG:

sudo pip uninstall spyder

If that doesn't work you can search your computer for spyder stuff, and delete it manually. Start by deleting spyder from /usr/local/bin:

sudo rm /usr/local/bin/spyder

Now rerun which spyder and see if anything turns up. If so delete that too.

Finally, find and clean up any associated config files etc.

Locate is easy to use so install that first:

sudo apt install locate && sudo updatedb

Then look for spyder:

locate spyder

You can then look through the list that has been returned to you and decide if there is anything else you need to delete.

pip uninstall spyder

is only simply code to uninstall actually, I also got an identical error to uninstall so someone suggested I read Syper Uninstallation