[Tkinter] Tkinter classes

[Gupi]

I don't know what is the expected look of your windows, the notebook widget is set to take up all the available space by self.pack(fill=tk.BOTH, expand=1) You are creating classes just for the sake of creating classes, over complicating the code.

I'm expecting to left part (FrameLeft (yellow)) have half of the window's width and right part (FrameRight (blue frame and Notebook)) take the other half.
The blue frame and Notebook's frame should take equal size.
How can I do that?
Putting Notebook into top-right frame takes additional size, so it takes space from the other frames.
I'm not creating classes just for the sake of creating classes. I'm planning on using all these frames.