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Variable length parameters for event method

from Tkinter  import * class MyApp:   def __init__(self, parent):     self.myParent = parent        self.myContainer1 = Frame(parent)     self.myContainer1.pack()          button_name = "OK"     self.button1 = Button(self.myContainer1,       command=self.buttonHandler(button_name, 1, "A"))            self.button1.configure(text=button_name, background="green")       self.button1.pack(side=LEFT)     self.button1.focus_force()            button_name = "Cancel"     self.button2 = Button(self.myContainer1,        command=self.buttonHandler(button_name, 2, "B"))              self.button2.configure(text=button_name, background="red")     self.button2.pack(side=LEFT)                    def buttonHandler(self, arg1, arg2, arg3):        print arg1, arg2, arg3         def buttonHandler_a(self, event, arg1, arg2, arg3):     print "event:", event     self.buttonHandler(arg1, arg2, arg3)      root = Tk() myapp = MyApp(root) root.mainloop()