Line 18 prevents the Python GUI from being resized.

Running this code will result in a GUI similar to the one we created in the first recipe. However, the user can no longer resize it. Also, note how the maximize button in the toolbar of the window is grayed out.

Why is this important? Because once we add widgets to our form, resizing can make our GUI look not as good as we want it to be. We will add widgets to our GUI in the next recipes.

The resizable() method is of the Tk() class, and by passing in (False, False), we prevent the GUI from being resized. We can disable both the x and y dimensions of the GUI from being resized, or we can enable one or both dimensions by passing in True or any number other than zero. (True, False) would enable the x-dimension but prevent the y-dimension from being resized.

We also added comments to our code in preparation for the recipes contained in this book.