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from Tkinter import *
class Hello(Frame):
def __init__(self, parent=None):
Frame.__init__(self, parent)
self.pack()
self.data = 42
self.make_widgets()
def make_widgets(self):
widget = Button(self, text='Button!', command=self.message)
widget.pack(side=LEFT)
def message(self):
self.data = self.data + 1
print 'Hello frame world %s!' % self.data
class HelloExtender(Hello):
def make_widgets(self):
Hello.make_widgets(self)
Button(self, text='Extend', command=self.quit).pack(side=RIGHT)
def message(self):
print 'hello', self.data
if __name__ == '__main__': HelloExtender().mainloop()
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