How to remove this known missing dependency?

this is how I installed —–FOLLOW EXPLICITLY——

sudo apt purge spyder spyder3
sudo reboot now

Re-open a terminal and continue————-

sudo apt install python-rope python-sympy spyder
sudo apt update
sudo reboot now

This is how I finally got spyder to install with missing dependencies. I assume you can use apt to install any of the missing dependencies found in Help > Dependencies and look for any highlighted missing packages. Worked for me.