Tkinter: problems running as a script.

[Aaron Ginn]

I'm unable to run a simple "Hello, world" python script, but I
can run the script if I paste the lines one at a time into the
python interpreter.  Here's the script called Tkinter.py:

#! /home/ginn/python_tk/bin/python
from Tkinter import *

root = Tk()

w = Label(root, text="Hello, world!")
w.pack()

root.mainloop()

When I run the script, I get the following output:

coronado <213> ~/bin/Tkinter.py
Traceback (innermost last):
  File "/home/ginn/bin/Tkinter.py", line 2, in ?
    from Tkinter import *
  File "/home/ginn/bin/Tkinter.py", line 4, in ?
    root = Tk()
NameError: Tk

However, when I run the script from the interpreter, it works.  Here's
the output from that:

coronado <216> /home/ginn/python_tk/bin/python
Python 1.5.2 (#14, Jun 26 2000, 10:29:29)  [GCC 2.95 19990728 (release)] on sunos5
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
>>> from Tkinter import *
>>> root = Tk()
>>> w = Label(root, text="Hello, world!")
>>> w.pack()
>>> root.mainloop()

The widget pops up just as expected.

What am I doing wrong here?

Thanks,
Aaron Ginn