I am running Ubuntu 10.10, and I installed Python 3.2 today. The system is already running Python 2.6.
I typed idle3.2 in the terminal and it gave me:

IDLE can't import Tkinter. Your Python may not be configured for Tk.

So I searched on Stack Overflow (and in some other places) for a solution, I installed python-tk, I rechecked that I have tclsh on the system, but I still can't manage to open idle3.2.
Any input would be appreciated.
you need to install tk or tk-dev packages for ubuntu.
IDLE can't import Tkinter. Your Python may not be configured for Tk