I have a basic Python script which uses Tkinter.
from Tkinter import Tk
from tkFileDialog import askdirectory
Tk().withdraw()
print askdirectory()
In your case you will find that there is Tcl8.X folder in python directory, it is at a place which is not mentioned in [list of directories], you mentioned in your question. Just pick any of the paths from those directory listings (preferably /lib ).
That will allow python to find Tcl library files and it will work.
Note: DO NOT MOVE FILES, JUST COPY THEM.