Tkinter reference: a GUI for Python

This method makes widget w disappear from the screen. It still exists, it just isn't visible. You can use .grid() it to make it appear again, but it won't remember its grid options.

Normally, all widgets propagate their dimensions, meaning that they adjust to fit the contents. However, sometimes you want to force a widget to be a certain size, regardless of the size of its contents. To do this, call w.grid_propagate(0) where w is the widget whose size you want to force.

This method is like .grid_forget(), but its grid options are remembered, so if you .grid() it again, it will use the same grid configuration options.