tkinter was especially helpful to me when using matplotlib and/or pyplot when I had the warning Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.. tkinter relies on the Tcl/Tk toolkit, tkinter might not be installed together with a default Python installation, even though tkinter belongs to Python's standard library. tkinter with something along the lines of: | Apt based distros (Ubuntu, Debian) | sudo apt install -y python3-tk |
| Fedora | sudo dnf install python3-tkinter |
| macOS | brew install python-tk |
$ python3 -m tkinter