Probem importing tkinter

[GarDebs]

Hi

I'm trying to teach my son Python programming... we're using Spyder on Ubuntu.

I'm trying to use this code...

from tkinter import *
import tkinter

tk = Tk()
canvas = Canvas(tk, width=500, height=400)
tk.title("drawing")
canvas.pack()

canvas.mainloop()

However,I keep getting this error

ImportError: No module named tkinter

I've tried installing python3-tk using apt-get but still no joy.

Any suggestions would be greatly appreciated.
Kind regards
Gary