I got this Text
widget, and I\'d like for it to expand and fill its entire parent, using the Grid geometry manager.
According to the examples I\'ve seen
Since your window only contains one widget and you want this widget to fill the entire window, it would be easier to use the pack geometry manager instead of grid
input_text_area.pack(expand=True, fill='both')
expand=True
tells Tkinter to allow the widget to expand to fill any extra space in the geometry master. fill='both'
enables the widget to expand both horizontally and vertically.