Tkinter GUI Application Development Blueprints, Second Edition - Second Edition

Ways to create widgets

There are two ways to create widgets in Tkinter.

The first way involves creating a widget in one line and then adding the pack() method (or other geometry managers) in the next line, as follows:

my_label = tk.Label(root, text="I am a label widget")my_label.pack()

Alternatively, you can write both the lines together, as follows:

tk.Label(root, text="I am a label widget").pack()

You can either save a reference to the widget created ( my_label, as in the first example), or create a widget without keeping any reference to it (as demonstrated in the second example).

You should ideally keep a reference to the widget in case the widget has to be accessed later on in the program. For instance, this is useful in case you need ...