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27.1. How to name a widget class

For example, suppose that Jukebox is a new widget class that you have created. It's probably best to have new widget classes inherit from the Frame class, so to Tkinter it acts like a frame, and you can arrange other widgets such as labels, entries, and buttons inside it.

You set the new widget's class name by passing the name as the class_ option to the parent constructor in your new class's constructor. Here is a fragment of the code that defines the new class:

class Jukebox(tk.Frame):
    def __init__(self, master):
        '''Constructor for the Jukebox class
        tk.Frame.__init__(self, master, class_='Jukebox')