[Tutor] HELP Please!!!....How Do I Make a Graph Chart Generate in Python Based on my Code

[znxm0i at yahoo.com]

Can anyone please help me figure out what I am NOT doing to make this program work properly.....PLEASE !!


I need to be able to take the user input that is entered in the two graphical boxes of the first window and evaluate it to generate a graph chart which is suppose to display in the second window.  I am totally at a loss for what I am NOT doing, and I know it is something so simple that I am overlooking because I am making this harder that what it most likely really is.

But I just cannot get it to work properly.  Please HELP !!!   Help me understand what I am doing wrong and how to fix it.  I believe I am on the right path but I'm becoming frustrated and discouraged.  

I have attached a copy of the code I've compiled so far.
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