I am learning basic GUI in Python, and I came across a sample example to read file name from file explorer on Stack Overflow.
from Tkinter import Tk from tkFileD
In case you are using Virtualenv on Windows I found a solution here: https://github.com/pypa/virtualenv/issues/93
I copied the "tcl" folder from C:\Python27\ over to the root of the new Virtualenv, Tkinter.Tk() shows a new window without throwing an exception.
I am running Python 2.7 on Windows 7.