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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 'Hiiii...'                      
        self.quit() 
 
class MyButton(HelloButton):         
    def callback(self):              
        print "Ignoring press!..." 
 
if __name__ == '__main__': 
    MyButton(None, text='My Button').mainloop() 
 
            
        
    
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