Subclass user-defined button class and redefined press-handler method : Control « Tkinker « Python Tutorial

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2. Tkinker
3. Control

from Tkinter import *
     
class HelloButton(Button):
    def __init__(self, parent=None, **config):
        Button.__init__(self, parent, config)
        self.pack()
        self.config(command=self.callback)
    def callback(self):          
        print 'Goodbye world...' 
        self.quit()
     
class MyButton(HelloButton): 
    def callback(self):      
        print "pressed"
     
MyButton(None, text='Hello subclass world').mainloop()

18.9.Control
	18.9.1.	Subclass user-defined button class and redefined press-handler method
	18.9.2.	Extend frame class
	18.9.3.	Add widgets to extended frame
	18.9.4.	Use extended frame class
	18.9.5.	Extend frame class the second time