Can a Tkinter GUI check for abort script:

[Michael Yanowitz]

Hello:

   I have successfully implemented a Tkinter GUI which has
this (simplified here for explanation):
+-------------------------------------+
|  filename: [        ./test3.py]     |
|                                     |
|  [Run Script]                       |
+-------------------------------------+

   But, now what I would like to do while the script is
running, is replace the "Run Script" with "Abort Script".  

+-------------------------------------+
|  filename: [        ./test3.py]     |
|                                     |
|  [Abort Script]                     |
+-------------------------------------+

   So, every tenth of a seconds or ??? better time, I
would like to 'return' to the GUI and check if the
"Abort Script" button has been pressed.
   How do I do this? Or is there a better way to
implement this?

Thanks in advance:
Michael Yanowitz