How to install tkinter?

Hi, I've been trying to install Tkinter onto IDEA under the Python Community Edition Plugins, but no matter what I do it just wouldn't work.

I tried to use commands like 'sudo apt-get install python3-tk' and 'pip install python3-tk' under the Python Console, but they don't work either, prompting me "invalid syntax" for the space between them.

Does anyone know how to install Tkinter under this circumstance?

Any help would be appreciated!