Multiple threads run within the same computer process memory space. There is no need for Inter-Process-Communication (aka IPC), which would complicate our code. In this recipe, we will avoid IPC by using threads.

First we will increase the size of our ScrolledText widget, making it larger. Let's increase scrolW to 40 and scrolH to 10.

# Using a scrolled Text control
scrolW  = 40; scrolH  =  10
self.scr = scrolledtext.ScrolledText(self.monty, width=scrolW, height=scrolH, wrap=tk.WORD)
self.scr.grid(column=0, row=3, sticky='WE', columnspan=3)

When we now run the resulting GUI, the Spinbox widget is center-aligned in relation to the Entry widget above it, which does not look good. We'll change this by left-aligning the widget.

Add sticky='W' to the grid...